Prof.
Carlo Fantoni
(Department of Life Sciences, University of Trieste), Mr
Marco Jez
(Arsenal s.r.l.), Dr
Marko Keber
(Fincantieri Oil&Gas S.p.A.)
20/06/2018, 14:00
Ship design review (SDR) involves extensive collaborative and participatory processes requiring all SDR actors (designers, stakeholders, end-users) to manage a large complex decision space and to cope with heavy cognitive demands. Here, we present a novel framework for the development of a system whose purpose is to optimize the balance between SDR complexity and users’ cognitive effort. The...
Mr
Simone Martini
(University of Trieste)
20/06/2018, 14:00
In ocean and offshore engineering, Vortex and Wake Induced Vibrations (VIV, WIV) are serious issues related to the design and operational safety of offshore installations/structures.
Vortex Induced Vibrations occur when vortices shed by a blunt freely-moving structure in steady (or unsteady) flow induce an oscillatory force on the structure, mostly in the direction perpendicular to the...
Mr
Dino Telesca
(ATENA Inland Waterways Group)
20/06/2018, 14:00
Mr
Igor Juricic
(HexagonPPM - Marine Business Development)
20/06/2018, 14:15
Current CAD/PLM technology is finally allowing to perform engineering progress evaluation based on the model data rather than on traditional drawings and human subjective estimation.
The paper illustrates the applied method, the requirements posed on the CAD/PLM solution to guarantee the applicability, a solution already available on the market and a real case study.
Dr
RODRIGO PEREZ FERNANDEZ
(Marine Business Unit Area Manager, Naval Shipbuilding. SENER)
20/06/2018, 14:15
This paper traces the history of ship design since Roman times, when ship designers began to use curves for drawing frames, through the Venetian techniques (XIII-XVI centuries) reusing templates, to the most modern methods for ship design.
Throughout the first half of the 20th century, ships were getting bigger; so it was necessary to work on larger scales. The templates allowed working on...
Mr
COSTANTINO BONGERMINO
(University of Genova), Prof.
PAOLA GUALENI
(UNIVERSITY OF GENOA)
20/06/2018, 14:30
Ship safety and operational aspects are driving issues of ship design and at the same time it is well
recognized that such performances are strongly related to the Human Factor (HF) element.
In the paper a methodology to integrate HF into the ship design process since an early stage is
proposed, with the aim to improve the overall ship resilience when dealing with uncertainty
implied by HF...
Mr
Sertaç Bulut
(Istanbul Technical University)
20/06/2018, 14:30
The prediction and reduction of underwater noise is commercially, militarily and ecologically a very critical issue for maritime industry. Machine noise, propeller noise and flow noise are the main components of underwater noise for submerged bodies. Especially at high flow velocities, flow noise becomes dominant source of underwater noise radiated from these bodies.
In this paper, the...
Dr
Rodolfo Taccani
(University of Trieste)
20/06/2018, 14:30
Data analysis of vessels routes show that shipping is responsible of about 3% of world CO2 and other pollutants production. The effect on environment is increased as most of the emissions are concentrated in coastal areas. IMO and other bodies are making growing efforts to impose severe limits on shipping pollutions. Different technical and operational improvements have been made but hydrogen...
Prof.
Vedran Slapnicar
(Head of Chair of Ship Design and Offshore Engineering)
20/06/2018, 14:45
Shipbuilding is a nonlinear and modular process. Activities in production, design, management and finance are interlinked and interdependent. That has been, but only partially, already tackled by PERT and net diagrams depicting interdependence of activities, but in the production process mainly.
We deem it desirable and indispensable to introduce all activities not only during the production...
Dr
Cecilia Leotardi
(National Research Council - Marine Technology Research Institute, CNR-INSEAN)
20/06/2018, 14:45
Simulation-based methodologies are widely used for the design of marine vehicles to alleviate the costs of the traditional build-and-test approach. Within this context, high-fidelity simulations are required to accurately predict and possibly optimize the performance of naval vehicles. The objective of the present work is the prediction of resistance and motions of a destroyer-type hull,...
Dr
ELIAS BOLETIS
(WARTSILA PROPULSION)
20/06/2018, 14:45
A vital component on the CP propeller shaft line is the gear box. The gear box is nowadays developed as a high- technology product being integral part of the shaft line system allowing: a) optimal rotational speeds for the propeller and the engine; b) configurational arrangements (e.g. twin- in, single- out layouts); c) two- propeller speed operation; d) integration of propeller hydraulic...
Mr
Fabrizio Cadenaro
(Lloyd's Register EMEA)
20/06/2018, 15:00
In recent years there has been a strong move toward the adoption of LNG and other alternative fuels in the marine industry, mostly driven by new environmental regulations and the possibility, by doing so, to have overall cost competitive power systems. Different fuels have different storage requirements which may have a large impact on the ship design. Industry is now pushed both toward the...
Mr
Carlo Nasso
(University of Trieste)
20/06/2018, 15:00
The European Inland Waterway Transport (IWT) is a viable and effective alternative to road and rail transport of persons and goods on the European network. Currently, the IWT is less exploited than the ‘traditional’ transport despite the European inland waterway network spans more than 29000 km and includes over 400 important ports and terminals. The design of inland waterway vessel is heavily...
Ms
Mariko Kuroda
(National Maritime Research Institute)
20/06/2018, 15:00
Added resistance in irregular waves is generally calculated as the mean value with wave spectrum and frequency response of the added resistance in regular waves. In the calculation, the added resistance in regular waves is assumed to be proportional to square of wave height based on the wave theory. However, from the experiment it is not always proportional. Therefore, the mean value from the...
Francesco Coslovich
(Chalmers University of Technology)
20/06/2018, 15:15
Optimization of modern hulls when moving in a seaway puts new demands on the computational methods used. Nonlinear effects become important for wave loads and added resistance in waves in presence of large motions.
The purpose of this paper is to present a method which aims to fill the gap between RANSE methods and partly nonlinear panel methods. The method solves the fully nonlinear free...
Dr
Raphael Zaccone
(Università di Genova, DITEN)
20/06/2018, 15:15
In recent years the International Maritime Organization (IMO) has introduced increasingly stringent regulations regarding sulphur oxides (SOx) and nitrogen oxides (NOx) emissions from the marine engines. Also the theme of reducing carbon dioxide (CO2) marine emissions is considered with increasing attention. A reduction of the above emissions, as known, could be achieved by adopting more...
Dr
Maged Abdel Naby
(Alexandria University)
20/06/2018, 15:15
Tolls paid by the vessels passing through the Suez Canal (SC) represent an important source of income for the Egyptian Economy.
The current research makes use of the current boost in the information technology and the timely published international scales and indices for calculating the earnings and the costs a ship incurs during her service to suggest a new toll calculation method. This...
Prof.
GIORGIO TRINCAS
(UNIVERSITY OF TRIESTE)
20/06/2018, 15:30
The Bucintoro project has been relaunched after years in stand-by under the name of “Bucintoro of the Third Millennium”. Many contributors from Italy and even from France have accepted the challenge with the purpose of building the modern version of the last Bucintoro burned by Napoleon troops at the end of the Venetian Republic. The previous phase of development brought to a business plan...
Prof.
GIORGIO TRINCAS
(UNIVERSITY OF TRIESTE)
20/06/2018, 15:45
Over last decades, due attention was paid to development of new stability criteria, especially probabilistic rules for damage stability, strongly influenced by the loss of many ro-ro ships in last decades of past century. In the last years, also a revision of intact stability code started and proposals have been implemented introducing stability in waves. These proposals deal with the...
Mr
Ørnulf Jan Rødseth
(SINTEF Ocean AS)
20/06/2018, 16:30
Ship digitalization, unmanned vehicle and cyber security
Paper
Public interest in autonomous ships has grown significantly since 2012, when the MUNIN project started to investigate the concept. In 2017, the first concrete project, Yara Birkeland, was published. Other projects are also under development. However, the business case for autonomous ships is not obvious: Benefits are no crew cost and no accommodation section or safety equipment for crew....
Mr
Konstantinos Louzis
(National Technical University of Athens, School of Naval Architecture and Marine Engineering, Laboratory for Maritime Transport, Maritime Risk Group)
20/06/2018, 16:30
Developments in the maritime industry, such as the increasing size of container and cruise ships, and the automated/autonomous ship concepts, yield technical and operational challenges throughout the life-cycle of ships. New interactions increase complexity, resulting in unforeseeable system states and risk fluctuations. Despite the development of approaches that address some of the...
ANDREA RIMOLDI
(ENI), Mr
MIRCO BUSETTO
(FINCANTIERI OIL & GAS)
20/06/2018, 16:30
Previous works have shown that the use of floating modular platforms (FMP) can represent a valid approach to the development of human activities at sea, near and off shore, both in civil/residential or industrial applications.
In particular, FMP technology provides a solution that allows the development of offshore fields in sequential stages. This will allows a shortening of the time for...
Mr
Stéphane Dardel
(Nick Danese Applied Research Sarl)
20/06/2018, 16:45
The economic and technical challenges of large-scale load-in/out operations require the assurance provided by specialized and integrated engineering software that provides leading-edge support to preparation and planning and helps ensure enhanced safety and quality control.
This case-study describes the planning of a loadout operation by a Self Propelled Modular Trailer (SPMT), for which...
Mr
GABRIELE SANCIN
(LLOYD'S REGISTER)
20/06/2018, 16:45
This paper explores the benefits and challenges associated with the installation of an Alternative Evacuation System (AES) in lieu of traditional survival craft on a modern passenger ship covering three different configurations and layouts (All AES, AES and Life rafts, AES and Life rafts and Lifeboat / tenders). The discussion will include an overview of the Type Approval process and detailed...
Prof.
Karl Sammut
(Flinders University)
20/06/2018, 16:45
Autonomous underwater vehicles (AUVs) are increasingly being used for underwater survey and exploration missions. The expanding mission scope for AUVs highlights the need for a long-endurance operational capability, which mainly depends on propulsion efficiency and battery capacity. For most deployments, AUVs are launched and recovered from a mothership. While the launch process is relatively...
Prof.
Karl Sammut
(Flinders University), Mr
Rowan Pivetta
(Flinders University)
20/06/2018, 17:00
The manual inspection of confined spaces, such as ballast tanks, for corrosion is a hazardous, time consuming, expensive, and subjective process. Robotic inspection techniques are being considered as they promise greater objectivity and comprehensive coverage as well as repeatability, reduced risk, and shorter maintenance downtime. To enable a robot to comprehensively inspect all surfaces...
Francesco Mauro
(Universita' di Trieste, University of Rijeka)
20/06/2018, 17:00
To design particular Offshore Vessels appendages like stingers, it is common practice to search extreme values of wave induced loads. The standard methods applied are performing the analysis by means of a Weibull distribution. The necessity of offshore industry to operate with severe sea state and the complexity of the considered geometry can be source of evident nonlinearities in the peaks...
Mr
ALESSANDRO BONVICINI
(CETENA), Mr
ANDREA MARCHESE
(CETENA)
20/06/2018, 17:00
In 2010 IMO (International Maritime Organisation) introduced new rules in SOLAS with the aim of intrinsically increasing the safety of passenger ships. This requirement is achieved by providing “safe areas” for passengers and “essential services” for allowing ships to Safely Return to Port (SRtP). The entry into force of these rules has changed the design of passenger ships. In this respect...
Mr
Marco Cadenaro
(Lloyds register), Mr
Marco Nardo
(Lloyd's register)
20/06/2018, 17:15
The shipping industry is going through a period of rapid technological change, and the rate of change is accelerating. This change is making it impossible for traditional prescriptive class and statutory requirements to keep pace with engineering advances. LR have developed a new ShipRight Procedure Risk Based Designs which is intended to provide a consistent and transparent process to assist...
Francesco Mauro
(Universita' di Trieste, University of Rijeka)
20/06/2018, 17:15
The continuous increase of offshore operation in deep or ultra-deep waters, makes, for modern units, Dynamic Positioning (DP) analysis mandatory since early design stage. The necessity to provide reliable solutions for the DP system to mount on board in order to maintain position requires the implementation of simulation codes to reproduce the dynamic behaviour of the unit under variable...
Mr
Angelo Odetti
(CNR-ISSIA)
20/06/2018, 17:15
Ship digitalization, unmanned vehicle and cyber security
Paper
Wetlands are geographic areas where water meets the earth. They cover between 5 and 8% of the Earth's surface. These include mangroves, bogs and marshes, rivers and lakes, alluvial plains and flooded forests, shallow coasts and coral reefs. They are essential ecosystems for human life. In fact, rich of life, these zones are very important sources of freshwater, but also natural purification...
Francesco Mauro
(Universita' di Trieste, University of Rijeka)
20/06/2018, 17:30
In preliminary Dynamic Positioning calculations, quasi-steady prediction approach is commonly used to figure out the system capability. Thrust allocation solver is usually modelling the thruster devices as pure force generators, considering empirical general formulations to correlate delivered thrust with absorbed power. In such a way,a rough estimate of the power demand during station-keeping...
Mr
Hubertus Osterwind
(Idea Meets Market Beteiligungsgesellschaft mbH), Mr
Robert Kratz
(idea meets market Beteiligungsgesellschaft mbH)
20/06/2018, 17:30
Ship digitalization, unmanned vehicle and cyber security
The internet onboard of ships is very slow and uncomfortable. This is caused by the high latency of the used satellite networks. Most internet connections are based on connection-oriented protocols, like TCP/IP, which require positive acknowledgments for each data packet sent. To fasten the data transfer, the use of a connectionless protocol without positive acknowledgments would solve the...
Mr
Luca Braidotti
(University of Trieste, University of Rijeka)
20/06/2018, 17:30
To evaluate the safety state of the ship in a generic operative or emergency condition is a very complex issue due to the huge number of attributes involved in the problem, uncertainties on their values and assessment of their mutual importance. The safety of the ship shall be presented in a simple and immediate manner in order to provide a useful decision support to onboard personnel. This is...
Mr
Constantinos George Zegos
(Lead Specialist)
20/06/2018, 17:45
Safety is integral to the reputation of passenger ship companies making it of paramount concern to them. For this reason passenger ship owners are aiming for safety standards well beyond the statutory requirements. The current methods for assessing ship survivability following a flooding casualty adopts a simplified application to define a complex issue and lead uncertainty and over-design. ...
Mr
OSCAR PEROSA
(NAVALPROGETTI)
20/06/2018, 18:00
Today a "Green" vision of the Port becomes fundamental and LNG is more environmental friendly than any other fuel for its reduced emissions (nitrogen oxide, sulfur oxide and particulate matter). In the Mediterranean Sea, the environmental legislation has not yet imposed strict limits like it happened in the ECA / SECA zones. However, starting from 2020 or in any case by 2025, new regulations...
Mr
Cok Loris
(NAVALPROGETTI SRL)
21/06/2018, 08:30
GASVESSEL project aims to prove the techno-economic feasibility of a new CNG transport concept enabled by a novel patented Pressure cylinder manufacturing technology and a new conceptual ship design including safe cargo handling.
It introduces an innovative solution for manufacturing Pressure cylinder that are 70% lighter than state-of-the-art alternatives. These superlight Pressure...
Dr
Alessandro Iannello
(ATENA)
21/06/2018, 08:30
The purpose of the project is to carry out the technical, economic and environmental feasibility of an innovative integrated management and treatment system on waste from modern cruise passenger ships.
The benefits of the new configuration compared to the traditional one will be identified by analyzing the entire waste chain from on board production to final disposal, through the various...
Prof.
GIORGIO TRINCAS
(UNIVERSITY OF TRIESTE)
21/06/2018, 08:45
This paper seeks to assess and identify the most viable marine technology to transport natural gas within the Mediterranean Sea. Pipeline, LNG and CNG solutions are put in competition. Techno-economic modelling of each technology is performed to evaluate corresponding Capex and Opex. To enable comparison among the alternative supply chains, estimations of the total cost of investment, shipping...
Prof.
Edwin van Hassel
(University of Antwerp)
21/06/2018, 08:45
Environment protection, electric system and ship energy efficiency
Paper
On 8 September 2017, the Ballast Water Treaty was officially ratified by IMO. The goal of this Treaty is to protect the marine environment. Exceptions to this Treaty are allowed, on condition that the risk of inventorisation of species is not increased. This research focuses on the economic (and societal) cost-benefit analysis of possible exceptions to the Treaty, in particular the possibility...
Marco Tezzele
(SISSA - mathLab)
21/06/2018, 08:45
We present the results of the application of a parameter space reduction methodology based on active subspaces (AS) to the hull hydrodynamic design problem. Several parametric deformations of an initial hull shape are considered to assess the influence of the shape parameters, considered on the hull wave resistance. Such problem is extremely relevant at the preliminary stages of the ship...
Prof.
Vittorio Bucci
(University of Trieste)
21/06/2018, 09:00
The increasing focus on air pollution reduction for transportation systems requires to adopt new technologies and innovative solutions to limit vehicles emissions. In case of inland waterway transportation (IWT), once vessels have to operate close to urban areas or in natural reserves, the necessity to provide a “green navigation” is of primary importance. With this specific aim, especially...
Francesco Mauro
(Universita' di Trieste, University of Rijeka)
21/06/2018, 09:00
The compressed natural gas (CNG) transport is becoming nowadays an attractive solution not only for stranded gas shipping where current technologies like liquefied natural gas (LNG) and pipe lines are not economically competitive, but also for long-enough distance transport of large volumes of natural gas, where LNG still represents the most economical solution. In fact, recent studies on...
Mr
Inno Gatin
(University of Zagreb, Croatia)
21/06/2018, 09:00
A unique numerical environment for assessing ship resistance using CFD is presented in this paper. Predicting ship resistance in calm water with the Naval Hydro pack can be performed within few hours, including computational grid generation, simulating and result post-processing. Being able to predict the ship resistance within few hours renders CFD a cost-effective design tool, since a hull...
Dr
Simone Mancini
(Eurisco Consulting Srls)
21/06/2018, 09:15
Stepped planing hulls enable the feasibility of running at relatively low drag-lift ratio by means of achieving more optimal trim angle at high speeds than a similar non-stepped hull. Furthermore, stepped planing hulls ensure good dynamic stability and seakeeping qualities at high speeds. However, there is no precise method to analyze these hulls over the full range of operating speeds. For...
Mr
Martin Einsiedler
(Shiptec AG)
21/06/2018, 09:15
The energy consumption of propulsion and all on board systems is becoming more and more into the focus of attention in shipbuilding and operation.
After some ample and intensive analysis and measurements of multiple operational profiles of ships, it was determined that a new, hybrid propulsion system, will be the optimal solution to reduce fuel consumption in timetable operation.
This...
185.
Small-scale LNG port facilities, permits, risk assessment, Eastern Mediterranean, LNG bunkering
Mr
Panayiotis MITROU
(Lloyd's Register)
21/06/2018, 09:15
Structural design & production technology
One of the key challenges to switch to LNG as fuel era is to create “a safe passage” for LNG bunkering, by designing safe, reliable and operable LNG port facilities and operations. Eastern Mediterranean region brings step changes towards small-scale use of LNG fuel for marine transportation through the extensive groundwork developed within European co-funded Poseidon Med II project. Lloyd’s...
Mr
Riccardo Pigazzini
(Department of Engineering and Architecture - University of Trieste)
21/06/2018, 09:30
An extensive campaign of model and full scale experimental tests as well as of numerical computations, aimed at the prediction of the hydrodynamic performances of a 65 ft motoryacht in calm water and in waves, is undertaken within the framework of the Project SOPHYA - Seakeeping Of Planing Hull YAchts, co-financed by Friuli-Venezia
Giulia Region in the field of joint industrial and academic...
Dr
Rodolfo Taccani
(University of Trieste)
21/06/2018, 09:30
The number of cruise ships sailing is growing constantly worldwide driven by increasing number of passengers. Higher attention to this ship segment, runs together with more complex energy systems installed on board due to the need of improving the energy efficiency. For this reasons, ship Owners and Shipyards are involved in the design of power plants and energy management systems that ensure...
Ms
Ioanna Koromila
(School of Naval Architecture and Marine Engineering, National Technical University of Athens), Prof.
Konstantinos Spyrou
(National Technical University of Athens)
21/06/2018, 09:30
Protection against fire is one of the pillars of maritime safety. Although the legislation requires compliance with prescriptive regulations of fire prevention, protection and extinction, the concept of “safety equivalence” has enabled substantial innovations in the design of modern passenger ships, where catastrophic consequences may occur. The assessment framework could be improved by...
Mr
Lorenzo Brigati
(Wartsila Italia SpA)
21/06/2018, 09:45
Environment protection, electric system and ship energy efficiency
The recent trend of marine industry towards more efficient and versatile ships and lower emission has increased the interest in hybrid solutions.
However, the spread of this technology has been limited by several factors both economical and technical.
Among these, a recurrent issue is the sizing of Energy Storage System (ESS) which is strictly connected to the vessel’s typology, its...
Dr
Andrey Sukhorukov
(Central Design Bureau for Marine Engineering «Rubin», Saint-Petersburg)
21/06/2018, 09:45
This study defines hydrodynamic characteristics of underwater gliders based upon numeric solution of Reynolds-averaged Navier-Stokes equation. Methodological aspects of determination of coefficients of rotary derivatives of hydrodynamic forces and moments of underwater objects based on mechanism of "sliding computation meshes" implemented in many computing software packages of mechanics of...
Mr
ALESSANDRO BONVICINI
(CETENA), Mr
MATTEO DREOSSI
(CETENA)
21/06/2018, 09:45
SOLAS (International Convention for Safety Of Life At Sea) Chapter II-2/Regulation 17 and Chapter III/Regulation 38 allow for the adoption of “Alternative designs and arrangements” that deviate from the ones permitted by prescriptive regulations. The process to be used for the Alternative Design engineering analysis is documented by SOLAS by means of guidelines and requires a holistic and...
Mr
Sergio Bisiani
(MarineLAB d.o.o.)
21/06/2018, 10:00
Nowadays fuel consumption reduction is a primary concern in order to minimise operative costs and emissions during navigation. On this purpose, ballast management play an important role, in order to find the best configuration for ship navigation. An optimal ballast water distribution ensures to find a floating position having the minimum fuel consumption while assuring the fulfilment of rules...
Prof.
Ermina Begovic
(University of Naples Federico II)
21/06/2018, 10:00
Operating in high speed regime leads to hydrodynamic lift and displaced volume diminution, consequently the boat experiences the changing of trim, rise of centre of gravity and wetted surface decreasing. Standard linear model, for planing hulls seakeeping assessment, based on the linear free surface condition and small changes in wetted surface are not applicable at all.
This work is focused...
Prof.
Rumen Kishev
(Bulgarian Ship Hydrodynamics Centre)
21/06/2018, 11:00
Environment protection, electric system and ship energy efficiency
Paper
Back in 2012, in its attempt to limit excess fuel consumption and green gas emissions respectively, IMO distributed MEPC.212(63) Resolution for calculation of the attained Energy Efficiency Design Index (EEDI) for new ships, which became mandatory since 2013. Attention has been paid to the account of the environment caused speed reduction, as directly related to the real operational...
Prof.
Valerio Ruggiero
(University of Messina)
21/06/2018, 11:00
Compared to all traditional fast ferries, Hydrofoil represents the best solution for the fuel economy and reduction of ship motions. These advantages are still undisputed primates of the wing supported means.
It is then wondering why hydrofoils are not so used in modern commercial fleets even despite the high management costs from the maintenance point of view, the initial acquisition cost...
Mr
Catalin Faitar
(Maritime University of Constanta)
21/06/2018, 11:00
Nowadays, self-propelled maritime transport increasingly depends on the use of new technologies and energy from renewable sources.The Action Plan clearly shows that the vision of building a ship that does not release emissions is realistic. As far as manufacturing time is concerned, it is not only a question of technology development, but also of the advancement of economy, infrastructure,...
Dr
Fabrizio Ortolani
(CNR-INSEAN)
21/06/2018, 11:15
During operative scenarios, the propeller can experience an inflow substantially different from the one considered in the design phases and the 3D character of the flow gives onset to a complete system of loads. The quantification of these loads is of paramount importance to assess the reliability of mechanical structures, the comfort on-board due to vibrations and the effects on the dynamic...
Federica Piastra
(Cetena S.p.A.)
21/06/2018, 11:15
Environment protection, electric system and ship energy efficiency
Paper
The awareness of ship’s energy efficiency is undeniably one of the top priorities of ship-owners, designers and operators; the aim is to comply the continuously updated regulations and to optimize the configuration of electrical machineries and their consumptions to reduce emissions and costs. Therefore also monitoring systems, historically connected to the ship structural condition, have been...
Mr
Angelo Odetti
(CNR-ISSIA)
21/06/2018, 11:15
In the framework of the RITMARE Italian Flagship Project, CNR INSEAN and ISSIA developed U-SWATH (Unmanned Small Waterplane Area Twin Hulls), an innovative Unmanned Marine Vehicle for institutional research purposes.
USWATH is 5 m long and 4 m wide with a maximum weight of 1.4 t. The SWATH non-conventional design ensures good seakeeping and good efficiency. Each of the submersible hulls,...
Dr
Lixin Xu
(China Merchants Offshore Technology Research Center)
21/06/2018, 11:30
Due to the request of energy source diversity, in addition to traditional oil/gas exploitation offshore industry has started to outspread to different energy areas such as gas hydrate and renewable wind energy in open sea. Foreseeably, as the demands of clean energy become more and more ardent under the pressure of environment protection, the offshore activities will extend more to renewable...
Dr
Fabiana Miglianti
(DITEN - University of Genoa - Genova - Italy)
21/06/2018, 11:30
For the propeller acoustic characterization, experimental tests in model scale are the currently established methods, however they are affected by uncertainties mostly due to scale effects. For this reason, it is difficult to consistently reproduce in model scale some of full scale functioning conditions.
To overcome this it is interesting to define empirical formulations to shape the most...
Prof.
Blagovest Belev
(Author)
21/06/2018, 11:30
Environment protection, electric system and ship energy efficiency
Paper
The International Maritime Organization (IMO), through its Maritime Environmental Protection Committee (MEPC), has been carrying out substantial work to provide the fundamental conditions for the reduction of greenhouse gas emissions from international shipping since 1997, following the adoption of the Kyoto Protocol and the 1997 MARPOL Conference. Many documents, issued in this respect, are...
Luca Martinelli
(Rosetti Marino SpA)
21/06/2018, 11:45
The aim of the paper is to describe an industry-academic collaboration to conduct a research project whose main goal is the design of a new escort tug family characterized by high intact/damage stability margins, good maneouvering capability and stable behaviour during escort indirect assistance.
The project is focused on three main research areas: hydrodynamic design and internal subdivision...
Mr
Fatih Cuneyd Korkmaz
(Yildiz Technical University)
21/06/2018, 11:45
Liquid sloshing cause ship tanks surface damages and affects ship motions. This phenomenon has been analyzed by rectangular tank model experimentally. Partially filled tank have been experienced and excited various frequency range by direction of sway. Experiments have been carried out with ordinary tank and baffled tank which is placed middle of tank base. Four different water levels have...
Prof.
Carl-Erik Janson
(Chalmers University of technology)
21/06/2018, 11:45
A benchmarking activity of numerical methods for analysis of Wave Energy Converters (WEC) was proposed under the Ocean Energy Systems (OES) International Energy Agency (IEA) Task 10 in 2015. The purpose of the benchmark is to do a code-2-code comparison of the predicted motions and power take out for a WEC. A heaving sphere was used as a first simple test case. The participants simulated heave...
Dr
Mauro Bonfanti
(Politecnico di Torino)
21/06/2018, 12:00
In this work, we address the use of Hardware In the Loop test rig for renewable energy application. Such test rig is designed to evaluate the performances of the wave harvesting system called ISWEC.
The ISWEC is a floating, slack-moored, gyroscopic Wave Energy Converter. The full-scale prototype has an electric-mechanical Power take-off (PTO) composed by a gearbox and a brushless torque...
Mr
Razvan Gabriel Plingu
("Dunarea de Jos" University of Galati, Romania)
21/06/2018, 12:00
The hydrodynamic resistance of the sailing yacht is strongly influenced by both the large appendages and significant heeling angles, respectively.
In order to evaluate the components of the hydrodynamic resistance the theoretical approach was based on the method proposed by Larson and Eliasson. The residuary resistance was calculated by using the regression formula proposed by Gerritsma...
Mr
Antonino Dell'Acqua
(Università di Trieste)
21/06/2018, 12:00
The main hydrodynamic characteristics of an Offshore Vessel are mostly referring to motion behaviour in rough sea. For such kind of ships, good seakeeping performances are mandatory, and, besides dynamic positioning quality, maybe more relevant than purely propulsive issues. The seakeeping performances of a ship are strongly influenced by main geometric parameters selected since concept design...
Mr
Sergej Antonello Sirigu
(Politecnico di Torino)
21/06/2018, 12:15
ISWEC (Inertial Sea Wave Energy Converter) is an offshore pitching floating device designed to exploit wave energy through the gyroscopic effects of a spinning flywheel. The annual productivity of the ISWEC is strictly connected to the hydrodynamic performance of the floater, that represents the first step in the energy conversion chain. The hydrodynamic performance can be described by the...
Mr
paolo becchi
(CETENA S.p.A.)
21/06/2018, 12:15
The last international recommended procedures and normatives provide detailed guidelines and formulation for the execution of speed and power sea trials and the analysis of the results. For this reason it starts to be necessary to analyze the data directly onboard as the trials are completed and define the effective contractual speed and power condition of the ship. CETENA recently improved...
Prof.
Valerio Ruggiero
(University of Messina)
21/06/2018, 12:15
As well known Italy is one of the leader in construction of large yachts, this market became bigger in the last decades not only in terms of number of constructions but also in terms of size of the ships.
In ‘80s main part of Yachts were 30-40 mt. in length, megayachts over 60 mt. were unusual, then the size of yachts increased to the actual 100m and over. Same way the cruising speed...
Mr
gianpiero lavini
(Fincantieri S.P.A)
21/06/2018, 12:30
Arctic and Antarctic areas are getting more and more attractive for cruises. The vessel designed for the operations in these and other ice areas like Canada and Baltic Sea must sail in ice in a safe and efficient way, as far as possible, without support of ice breakers. At the same time they should be quite efficient also in open waters. However the hull hydrodynamic shape of an efficient...
Mr
Giovanni Alberto Di Mare
(Università degli Studi di Genova)
21/06/2018, 12:30
The paper refers on a research activity developed at DREAMS Lab of the University of Genoa (Italy), focused on experimental application of air-bubbling technique on a hull model. With this method the injection of compressed air on the bottom of the model generates air bubbles modifying the boundary layer; measurements are implemented in towing tank.
The hull model has got a large flat bottom...
Mr
Nicola Pozzi
(Politecnico di Torino)
21/06/2018, 12:30
Nowadays, atmospheric pollution and climate changing have encouraged Governments to invest in renewable technologies for clean energy production.
Wave Power constitutes an interesting option in the panorama of renewables and starting from the first results achieved in the ‘70s, in the last and present decade the major efforts have been concentrated to make Wave Energy Converters (WECs) more...
Prof.
Tommaso Coppola
(University of Naples)
22/06/2018, 09:00
The noise emissions from various transportation modes including seaports have become a major concern to environmental and governmental agencies in recent years due to the impact they have on the community. As a result, campaigns and studies have been directed towards the analysis and control of main noise sources. However, few research activities have been carried out on environmental noise...
Prof.
Dario Boote
(University of Genoa), Mr
Gianmarco Vergassola
(University of Genova)
22/06/2018, 09:00
The growing increase in length of super and megayachts has driven structural designer to adopt longitudinal layouts as a main point in the structural scantlings. By the way, the optimization of weights, strength, deformations and dynamic behaviour has to be assessed one off for each new units because of peculiar and unique characteristics of each vessel.
For this assessment, in particular...
Prof.
Enrico Rizzuto
(University of Naples)
22/06/2018, 09:00
Environment protection, electric system and ship energy efficiency
Paper
In the next years, the worldwide fleet will be called to adopt drastic measures to reduce the emissions of pollutants. In order to comply with the Paris Agreement and keep the average increase in the earth’s temperature below 2OC, emissions will have to drop significantly from 2020 onwards. At the end of 2018, the UNFCC expects the IMO to communicate its intentions regarding the Paris...
Prof.
Luigi Bregant
(University of Trieste)
22/06/2018, 09:15
To assess passengers comfort on board of cruise ships, Classification Societies recommend specific aspects of ship design and layout, to comply with a set of suitable criteria.
These criteria take into account ambient aspects and disturbances such as whole-body vibrations, noise, indoor climate and lighting. The proper combination of those should create a suitable environment for the...
Dr
Pasqualino Corigliano
(Department of Engineering, University of Messina)
22/06/2018, 09:15
Welded joints in ship structures are subject to several variable loadings which may lead to fracture after a relatively low number of cycles. This behaviour is not always fully described by high-cycle fatigue predictions, so low-cycle fatigue has also to be assessed, considering plastic deformation. Local approaches, mainly based on local displacement and strain measurements by strain gauges,...
Dr
Gianandrea Mannarini
(CMCC)
22/06/2018, 09:15
Ship digitalization, unmanned vehicle and cyber security
Paper
A new development of the VISIR ship routing model ([Mannarini et al, Geosci. Model Dev., 9(4):1597-1625, 2016][1]) is here presented.
The first version of the model has powered an operational service in the Mediterranean Sea (www.visir-nav.com) for about 3 years. Its source-code is distributed with an open policy ([www.visir-model.net][2]).
The new developments target large ocean-going...
Dr
Vincenzo Piscopo
(The University of Naples "Parthenope")
22/06/2018, 09:30
The assessment of plating ultimate strength with pitting corrosion wastage is a basic issue for the proper scantling and design of ship structures. In the past, several nonlinear FE analyses have been performed to investigate the incidence of pitting degree and corrosion depth on plating ultimate strength, with the main aim of providing some approximate formulations, useful at least in a...
Dr
Erina Ferro
(National Research Council of Italy)
22/06/2018, 09:30
Many environmental data can affect the comfort of a guest in a cruise ship: cabin temperature, humidity, light intensity, noise, and air quality. Possible environmental discomfort may also have negative effects on the quality of the passenger's sleep, which is an important aspect of the overall concept of "human well-being". In this article, we describe both an environmental monitoring system...
131.
Kotor Bay area hydrodynamics and pollutant dispersion simulations: a tool for contingency plans
Dr
Federico Roman
(iefluids s.r.l.)
22/06/2018, 09:30
Harbor and coastal areas, according to ITOPF statistics, are frequent scenarios of small oil spill accidents, usually caused by oil tanker collision in maneuvering or during oil download. For sake of marine environment and human activities, contingency plans are required to minimise the damages of oil spills. In this regard numerical simulations are a useful tool to explore both the worst or...
Dr
Massimiliano Nolich
(DIA - University of Trieste)
22/06/2018, 09:45
The evolution of sea cruisers’ research considers the possibility to provide more comfortable cabins to the passengers. This goal can be achieved by providing the sea cruiser with the possibility to acquire, manage and reason over data deriving from the cabin environment, its passengers and their activities. A promising approach to deal with the information belonging to these domains is...
Dr
Andrea Orlandi
(Researcher at Consorzio LaMMA)
22/06/2018, 09:45
The growing pressure of the international regulations on GHG emissions from ships is pushing towards the adoption of a variety of operational energy efficiency measures. The fusion of measurement techniques, smart telecommunication technologies and numerical modelling approaches has a great potential for the implementation of services for the shipping industry. Among these, there are weather...
Dr
Pasqualino Corigliano
(Department of Engineering, University of Messina)
22/06/2018, 09:45
Aluminum superstructures and common steel hull connections are of fundamental importance in ships. Traditionally they were performed by riveting, leading to corrosion phenomena and stress concentration sites. Structural transition joint obtained by explosion welding can overcome these problems giving a good compromise in terms of mechanical strength and corrosion resistance.
This study...
Dr
Andrea Orlandi
(Consorzio LaMMA, Florence,Italy)
22/06/2018, 10:00
Environment protection, electric system and ship energy efficiency
Paper
In the present study, scenario simulations are performed by integrating ship
performances prediction models with meteo-marine forecasting and pollutants emissions transport
models. By considering the detailed simulation of seakeeping and powering performances of a ship
along predefined routes, in different realistic meteo-marine conditions, the concentration of the
emitted pollutants and...
Dr
Massimiliano Nolich
(DIA - University of Trieste)
22/06/2018, 10:00
Information and Communications Technology (ICT) has an impact on nearly every aspect of people’s lives – from working or learning to socializing – and makes peoples lives easier and more comfortable. In particular, smart home devices can handle environmental characteristics (temperature, etc.) increasing the people's comfort and can also help in reducing costs.
In order to increase...
Prof.
TOMMASO COPPOLA
(University of Naples)
22/06/2018, 10:00
The accurate prediction of wave-induced forces and moments on a hull operating in severe weather conditions plays an important role in assessing ship structural strength.
For ships prone to large variation of the submerged hull in wave, wave-induced loads could be influenced by the development of parametric roll. This concept is based on the evidence that the combination of all the ship...
Mr
Matteo Sidari
(Fincantieri S.p.A.), Mr
Mauro Sicchiero
(Fincantieri S.p.A.), Mr
Vincenzo Liguori
(Fincantieri S.p.A.)
22/06/2018, 10:15
The paper illustrates the developments in rules and design lifecycle of modern cruise ship, resulting from the cooperation between industries and classification societies. Fincantieri S.p.A. experience together with Lloyd’s Register and RINA technical background, worked side by side in order to overcome not harmonized rules and regulation not specific for this type of ships. Latest IACS...
Dr
Federico Roman
(iefluids s.r.l.)
22/06/2018, 10:15
The flow around ship over-structures is characterized by both separation phenomena with recirculation regions at high Reynolds number, and the fast ejection of hot smokes from funnels. These two features are of the utmost importance for two linked goals in the ship design, namely the aerodynamic drag reduction and the preservations of passengers’ comfort. In particular, the latter depends on...
Mr
Francesco De Lorenzo
(Fincantieri SpA)
22/06/2018, 10:15
Noise pollution under the sea has been far away from all the existing rules up to a few years ago, but with the emergence of links between noise and environmental diseases , this problem is having an increasing attention. In this paper the authors outline the evolution of the international regulation framework , with references to the class notation issued from Registers : but the interest...
Dr
Marina Delucchi
(University of Genova, DICCA)
22/06/2018, 11:15
Targets of the surface treatments of marine hulls have always been to preserve the structural capacity of the hull envelope and to maintain a smooth and clean external surface, thus minimizing the frictional component of motion resistance.
These objectives are pursued since a couple of millennia by fighting the chemical and biological phenomena inducing various forms of degradation in the...
Mr
Massimiliano Leonardi
(Marina Militare Italiana)
22/06/2018, 11:15
The Italian Navy has always had, among its mission, the safeguard of the marine environment, and it is strongly oriented in giving its contribution to the targets fixed form the European Parliament with the “2020 Climate and Energy package”.
In 2012 ITN has launched the “Flotta Verde” initiative, with the purposes of reducing gas emissions and improving the national energy security. To...
Mrs
Giada Kyaw Oo D'Amore
(Engineering and Architecture Department, University of Trieste)
22/06/2018, 11:30
An innovative acoustic and thermal insulating foam was developed starting from fibreglass waste. In this work, the thermo-mechanical response of a fire door containing the foam as insulating material is considered and also the acoustic properties are investigated. In order to comply with the certification process provided by 2010 FTP Code, fire doors must undergo a standard fire test where a...
Dr
ALESSANDRO BOVERI
(UNIGE - DITEN)
22/06/2018, 11:30
The effort on environmental issue in the maritime field has led to more stringent regulations on greenhouse gas emission (GHG). The International Maritime Organization has developed regulations intended to increase the ship’s efficiency and reduce GHG emissions in a design phase. In this perspective, several approaches and technologies adopted in land-based engineering can also be advantageous...
Mr
Michele Cataneo
(Marina Militare Italiana)
22/06/2018, 11:30
Shore connection has become a topic of huge technical interest both for merchant ships and for military ships. The Navy's fleet renewal program offers the opportunity to reconsider this aspect within the main naval bases of the Italian peninsula. In particular, the presentation analyzes the overhaul project of the Stazione Navale Mar Grande's electrical system in Taranto with the aim to be...
Mr
Vincenzo Manzari
(Italian Navy - Univ. of Pisa)
22/06/2018, 11:45
Autonomous Underwater Vehicles (AUVs) are offering new capabilities for a wide range of military and civilian applications. The interoperability of heterogeneous AUVs with different skills is critical to accomplish such complex tasks. Indeed, the proliferation of AUVs with their own mission control interface and communications protocol makes it difficult to operate them within operational...
Mr
GIORDANO FLORE
(UNIGE - DITEN)
22/06/2018, 11:45
An intense innovation is characterizing energy system solutions on board ships, especially in the case of large passenger ships due to the significant total amount of installed power and the variegate typology of electrical loads.
In the paper a distributed energy system will be considered for a 140.000+ GT cruise ship, in the perspective of a superior performance in terms of safety and...
Mrs
Serena Bertagna
(University of Trieste)
22/06/2018, 11:45
Marine engine industry researches for continuous improvement of efficiency and performance. Currently, all components of marine engines are made in metallic alloys. To reduce costs and weight, new materials for non-structural components must be identified. The new materials, e.g., nano-engineered thermoplastic polymers (NETP), will allow additional benefits due to drastic weight reduction and...
Mr
Claudio Moscoloni
(Politecnico di Torino), Mr
Marco Fontana
(Politecnico di Torino)
22/06/2018, 12:00
In racing boat design, the research is moved to find always the best compromise between performance and safety. The present work focuses on the description of the structural design cycle used by Polito Sailing Team during the realization of its new skiff, a high-performance sailing dinghy, built mainly with natural composite material like balsa wood and flax fiber. The whole boat was...
Dr
Daniele Bosich
(University of Trieste)
22/06/2018, 12:00
In recent years, the MVDC distribution has been proposed as a viable solution for the redesign of the shipboard Integrated Power System (IPS). Indeed, there are relevant advantages promised by the innovative DC concept, among others a desirable reduction in the electric power system size. For providing a virtual proof-of-concept of this technology, parametric and interactive 3D models can be...
Ms
Cassi Elisa
(Lloyd's Register EMEA), Mr
Paolo Scialla
(Lloyd's Register EMEA)
22/06/2018, 12:00
In the latest years a number of incidents affecting both the information and operations of several industry and business sectors stimulated the needs for taking into consideration the risks associated to the use of innovative technologies in a number of production and business processes. The maritime sector is potentially exposed to a number of hazards that need to be assessed and treated....
Mr
Davide Cardellicchio
(Marina Militare Italiana)
22/06/2018, 12:15
It’s been 15 years since “cyber risk” was identified as the new millennium threat, potentially affecting organizations, industries, governments and society. Despite choral worries, the naval context has seemed to remain unaffected for years, as long as ships could have been considered “isolated systems” floating offshore. But, as new technologies (either commercial or military) had spread out...
Mr
Giordano Torri
(Fincantieri Si spa)
22/06/2018, 12:15
The need for reduction of pollution when ships are in port requires the use of a shore-to-ship power system for supplying energy to the onboard grid. The latter is normally fed at 60Hz, so a frequency conversion is needed. Power can be taken from the public power grid available on shore. In order to reduce the environmental impact, this power system can be integrated with local, distributed...
Prof.
Alberto Marinò
(University of Trieste)
22/06/2018, 12:15
In the last few years, the International and National attention to environmental sustainability has increased, even in shipbuilding. This aim can be achieved through various manners, for example by green propulsion (hybrid propulsion), by containment of spills and by studying the life cycle of vessels. About the last one, the problem of disposal of ships at the end of life is of high...
Dr
Giuseppe La Tona
(Consiglio Nazionale delle Ricerche)
22/06/2018, 12:30
This paper presents the development of a novel architecture for the low voltage electrical distribution on board using a mixed AC/DC approach. The design of the proposed solution is based on a real-world case study, i.e. the electrical distribution grid of a main vertical zone of a large cruise ship. The new electrical architecture is designed with the aim of obtaining a gradual transition...
Mr
Francesco Greco
(Marina Militare Italiana), Mr
Simone Serpagli
(Fincantieri S.p.A.)
22/06/2018, 12:30
All NATO navies are facing the challenge of meeting current and future operational requirements while reducing procurement and life cycle cost of naval platform.
To this regard, the Italian Navy has adopted, over the last years, new design concepts in order to maximize operational flexibility for future needs by an extensive use of modularity features on its platforms.
During 2016 through...
Mr
Nick Danese
(Nick Danese Applied Research)
22/06/2018, 12:30
The Design, Production & Operation Single Environment connects the PLM universe. The 3D model supports similar design and production roles: drawings, count hours, end-treatments, BOMs, drive robots, non-Engineering consumable forecasting (paint, blasting, welding, etc.), human resource requirements (manhours, special skills, inspections, etc.). Non-engineering Data & information contributes...
Dr
Ivano Soliani
(SOLIANI EMC SRL)
22/06/2018, 12:45
The scope is just to offer a view of the good results involved just in installations maade with our fabrics textile electrically conductive with electro chemical treatment with metal nickel to offer a good shielding results from electromagnetics interferences specially in a wide range of weaves from KHz to GHz and with stability in corrosion fog salt in comparison to mesh copper and for...
Mariateresa Campolongo
(Università degli Studi di Genova)
22/06/2018, 14:30
The recreational craft market (for boats longer than 24 metres) is particularly interesting as it continues to grow, displaying an ongoing positive trend since 2010 (source: Altagamma and SBI) with motor yachts constituting the major segment. These boats offer several points for consideration, particularly regarding their interior design, a topic of great interest nowadays.
The interiors of...
Dr
Juan González-Adalid
(SISTEMAR)
22/06/2018, 14:30
Most of the traditional procedures for the design of conventional propellers do not yield reliable outcomes in the case of unconventional propellers, for which high-fidelity prediction of performance characteristics are necessary. It is generally understood and recognized, for instance, that the standard ITTC’78 procedure for model to full-scale extrapolation of performance is not reliable in...
Mr
Daniele Bruno
(MICAD s.r.l.), Mr
Daniele Malgieri
(MICAD s.r.l.)
22/06/2018, 14:45
The shaft-less rim-driven thruster (RDT) can provide many advantages over traditional ship propulsion plants including enhanced onboard comfort and propulsion efficiency, locations arrangement flexible installation, light weight and compact size. For this reason, during last years it become an attractive ship propulsion device in the marine industry.
Within the project P. E. R. Na....
Dr
Enrico Carassale
(UNIGE DAD)
22/06/2018, 14:45
The analysis of the furnishing system in relation to the evolution of the motor yacht can propose several insights. Firstly, on the aesthetic evolution of furnishings, in relation to the construction systems and materials used, secondly, the evolution of the organization of living spaces in relation to the general proportions of the boat. Ultimately, the study of the evolution of the concept...
Mrs
Marta Cianferra
(University of Trieste)
22/06/2018, 15:00
In the present work simulations of an isolated marine propeller are carried out using Large Eddy simulation and the acoustic field is reconstructed by applying the advective Ffowcs-Williams and Hawkings equation. We reproduce a propeller well studied in literature (https://www.sva-potsdam.de/en/potsdam-propeller-test-case-pptc/) for a single value of the advance ratio.
We use the dynamic...
Mr
Paolo Ferrari
(University of Trieste)
22/06/2018, 15:00
The proposal focuses on the definition of a new approach for the design of accessible and inclusive sailing yachts that takes into account the typical problems of users affected by permanent and temporary disabilities, as well as children, the elderly and pregnant women. Starting from the analysis of the current state of the art relating to sailing yachts ranging from 33 to 78 feet, it is...
Dr
Leonida Giunta
(Ca' Foscari University of Venice)
22/06/2018, 15:15
Many international conventions adopted at IMO level were conceived for “merchant” ships and their application to leisure yachts turned out to be challenging. That’s why alternative solutions have been explored worldwide. In a nutshell, the idea was to create a set of rules and standards specifically adapted to this genre of vessel. Here, the key issue is represented by the establishment of...
Dr
Mitja Morgut
(Università degli Studi di Trieste)
22/06/2018, 15:15
In modern market scenarios, the competitiveness of an enterprise is determined, beyond the quality of the product, by its time to market. Thus, nowadays, the computational fluid dynamics (CFD) technologies are extensively used for design purposes allowing the - in general - more expensive and time consuming experimental tests to be performed only at the final stages of the project....
Dr
Liviu Crudu
(“Dunarea de Jos” University of Galati, Faculty of Naval Architecture and NASDIS Consulting, Galati), Dr
Oana Marcu
(“Dunarea de Jos” University of Galati, Faculty of Naval Architecture)
22/06/2018, 15:30
During the early design stages a fairly evaluation of propeller induced forces on the aft part of a Ro-Ro ship could become of paramount importance and, often, very difficult to be handled. The complex hydrodynamic interactions and the limited ways of wake factor evaluation, when experimental values are not available, lead to the necessity to consider Computational Fluid Dynamic tools in order...
Mr
Gianluca Gustin
(FINCANTIERI)
22/06/2018, 15:45
CFD simulations are becoming more and more reliable and the increasing computational power are making them a convenient tool to investigate complex phenomena and to reproduce the experimental tests. In the hydrodynamic design process the correct evaluation of the self propulsion performance is an essential item to access the true performances of the ship. This paper deal with a CFD...
Mr
Cagatay Sabri Koksal
(Istanbul Technical University)
22/06/2018, 16:00
A new research project, involving the construction of a modern, large, closed-circuit depressurized high-speed water tunnel to support the detailed hydro-acoustic, hydrodynamic, cavitation and flow visualization based experimental campaigns, has been started in Istanbul Technical University. The present paper covers the fundamental viscous flow computations concerning the design of the...
Mr
Francesco De Lorenzo
(Fincantieri SpA)
Comfort on board
Paper
Two cruise ships of the same class have been designed with two different types of propulsion: the prototype, with a conventional shaft lines propulsion system, while the sister ship, at request of the Ship-owner, it has been designed with POD propulsion.
The vibrations on the aft vault are mainly generated by the hydrodynamic pressures induced by the propeller. In that way Fincantieri took...
Mr
Francesco De Lorenzo
(Fincantieri SpA)
Comfort on board
Paper
This article reports a brief summary of the tests and investigation performed to validate a simple numeric method to calculate reverberation time of a cruise ship cabin. The introduction of this method has the objective of creating a simple and fast procedure to estimate various acoustic parameters of interest for a shipyard in a cruise ship cabin without the need of multiple measurements on the field.
Dr
Alberto Ferrari
(University of Genova)
Environment protection, electric system and ship energy efficiency
Paper
The paper presents an experimental analysis of the trim influence on an existing and operating ship, in order to assess possible fuel consumption reductions. The investigation is based on model tests performed at the towing tank of Genoa University, where the trim influence on the hydrodynamic resistances of a high-speed vessel and a slower mini-cruiser is investigated for various operating...
Dr
Umut YILDIRIM
(Karadeniz Technical University)
Comfort on board
Paper
By 2015, there are 1 million 650 thousand seafarers globally. The number of Turkish seafarers is about 180 thousand. However, after China, the largest number of seafarer training in Turkey, the sea service time of seafarers is not at the desired level. For this purpose, the physical and psychological difficulties encountered by Turkish seafarers in marine services were researched through...
Mr
Sergio Divano
(ABB Marine & Ports)
Environment protection, electric system and ship energy efficiency
Paper
In passenger vessels, Heating Ventilation and Air Conditioning (HVAC) system is the second largest consumer of energy after propulsion. It can be estimated that up to 30% of the total energy consumption of a passenger ship comes from HVAC systems for cabins, public areas and galley ventilation. When the ship is berthed in the port, the HVAC system becomes the main energy consumer. ABB can...
Mr
Chiharu Kawakita
(National Maritime Research Institute, Japan)
Numerical & experimental hydrodynamics
Paper
Marine propellers operating in the ship stern wake generate an unsteady propeller fluid force and cause a hull vibration. The deformation of metal marine propeller is not considered, because it is sufficient stiffness. However, marine propeller using the composite material called flexible propeller appeared, by controlling the actively blade deformation in response to load changes in one...
Dr
Danilo Ruscelli
(Cetena SpA), Dr
Massimiliano Burlando
(University of Genoa)
Safety and security
Paper
The knowledge of the dynamic behavior of a moored vessel under strong wind conditions is of great importance for the safety of personnel and passengers and the structural integrity of ships and shipyards both during the ship construction phase and along its operating lifetime. The evaluation of such behaviour, which is very complex and strongly non-linear, is usually carried out through...
Dr
Francesco Soldovieri
(CNR IREA), Dr
Margherita Cipriano
(DIA - University of Trieste), Dr
Massimiliano Nolich
(DIA - University of Trieste), Dr
Paolo Ferrari
(DIA - University of Trieste), Dr
Raol Buqi
(DIA - University of Trieste), Dr
Sara Carciotti
(DIA - University of Trieste), Prof.
Walter ukovich
(DIA - University of Trieste)
Safety and security
Paper
All over the world the tendency is to bring ships to be increasingly safe. Regarding cruise ships the safety has two different aspects to deal with: the first one is during the design of the ship, the second one is during ship operation. Cruise ships are able to carry on board thousands of people, with different behaviors. The interaction between them, in case of emergency, may worsen the...
Mr
SERDAR YILDIZ
(Karadeniz Technical University)
Safety and security
Paper
ABSTRACT
During the last decade, it became necessary to create alternative routes for sustainability of safe maritime trade. As a result, alternative routes are increasing day by day, in large marine areas such as open seas and oceans, by evaluating the safety of navigation and the economic efficiency of maritime trade. The other way to make safety sustainable in the growing maritime trade...
Mr
Alessandro Toson
(Cergol Engineering Technical director)
Comfort on board
Paper
In the last years, the ship builder trend is to realize light structures in order to optimize the weight distribution on board. Since the early stage of the ship design process is very important to understand the dynamic behaviour of the different typology of ship structures.
For this reason, the importance of an accurate prediction analysis of the natural frequencies has become fundamental,...
Mr
Aditya Rio Prabowo
(Pukyong National University)
Structural design & production technology
Paper
Ship grounding still possibly takes place even though attempt to improve structural safety is conducted. This situation leads to sustainable research to estimate structural consequences during a naval structures experiences accidental event, such as collision and grounding. Pioneer works in this field have considered conical and prism indenters as idealization of the seabed. However,...
Mr
Aditya Rio Prabowo
(Pukyong National University)
Structural design & production technology
Paper
Besides double bottom, accidental impact load may target double side of any ship during a voyage and possibly triggers remarkable chain reaction, such as oil spill, life loss and carrier damage. Operation in several high-traffic routes makes passenger ship can be a target of various accidental events. However, considering to the research trend, researchers yet to conduct many works to estimate...
Mr
Andrea Crosetti
(ABB Marine & Ports)
Ship digitalization, unmanned vehicle and cyber security
Paper
Cybersecurity and IT Security are no more an option.
ABB as automation maker, is driving the market awarness. We're building specific product resilence, in order to enforce business continuity in a fast growing digital environment.
Training, specific products and continuous asset management are the pillars to grow confidence on advanced services.
Mr
Antonio Calonico
(Lloyd's Register EMEA)
Ship propulsion, machinery and systems
Paper
High voltage rotating machines are widely used for electric propulsion and generation on-board ships. Following to some failure, investigation started to determine the root cause, and diagnostic measurement campaigns started to get information of the machine healthy and reliability. Environmental aspects are to be considered: vibration coming from the reciprocating machines, the particular...
Dr
Umut YILDIRIM
(Karadeniz Technical University)
Safety and security
Paper
Grounding accidents have an important share among marine accidents. A significant part of the shortcomings identified during grounding accidents concern bridge resource management. IMO Model Course 1.22 and STCW Section B-VIII / 2, Part 3-1 trainings/regulations have been put into practice for the development of bridge resource management on-board. For this reason, the study has been limited...
Mr
BURAK VARDAR
(KARADENİZ TECHNICAL UNIVERSITY)
Stability, Seakeeping, Maneuverability
Paper
Sea transport is a field that requires high cost and frequent accidents. These accidents are sometimes caused by equipment malfunctions and sometimes due to lack of personnel knowledge and experience. One of the regions that frequently have problems during operations is the maneuvering areas of the ships.
In this study; the problems experienced during the maneuvers of the ships and the...
Mrs
arife tugsan isiacik colak
(Captain LEcturer ( PhD ))
Safety and security
Today, the seas have become a convenient medium for organizing criminal activities such as terrorism, use of weapons of mass destruction, drug smuggling, movement of refugees and illegal immigration. Within this framework, illegal activities on the seas have become an extremely profitable area for maritime gangs and organized criminal teams. This study is aimed at investigating modern piracy...
Prof.
Damir Kolich
(University of Rijeka)
Structural design & production technology
Paper
Many shipyards use the classical submerged arc welding (SAW) or metal active gas (MAG) welding technologies during the assembly of ship panels. However, since the advent of applying advanced hybrid laser arc welding in avant-garde shipyards, it is expected that other shipyards will eventually apply this new technology. Since panel assembly is one of the core production areas in any shipyard,...
Mr
Carlo Augusto Pasquinucci
(Freelancer)
Conceptual and practical ship design
Paper
The scope of this paper is the development of nonlinear meta-models for the prediction of the resistance of a Postpanamax Containership.
The goal is the creation of new systematic series for modern hull, using CFD simulation instead of experiment in towing tank, in order to have the possibility to take in account more geometries in less time.
In order to consider different hull...
Ms
Ieva Ronkaitytė
(Klaipeda University)
Numerical & experimental hydrodynamics
Paper
This paper presents results of application of air lubrication method as one of the methods for ship water resistance reduction. The research was performed for a ship designed for shallow waters. Water resistance analyses were carried out for a certain range of speeds with air injection and without. Investigation was carried out using computational fluid dynamics software FLOW – 3D. Results...
Dr
Andrea Rocca
(university of Trieste)
Numerical & experimental hydrodynamics
Paper
We study hydrodynamics of a fully appended submarine using numerical simulations. First, we solve the Reynolds Averaged Navier-Stokes (RANS) equations, and successively we use Large-Eddy Simulations (LES). The Reynolds number of the flow is ReL =9.57 x 106 and we consider two angles of yaw, 0° and 10°. The wall-layer approach is used to skip the direct solution of the thin viscous sub-layer....
Mr
Carlo Negrato
(Chalmers University of Technology)
Numerical & experimental hydrodynamics
Paper
Unsteady cavitation on ship propellers operating in behind-hull condition can induce large hull-pressure fluctuations. The hull forms at the stern together with the propeller characteristics determine the severeness of the excitation forces; hence the pressure pulses must be considered at design stage to avoid undesired vibrations. Computational Fluid Dynamics (CFD) simulations proved...
Prof.
Luigi Cannizzaro
(Unipa)
Ship propulsion, machinery and systems
Paper
Engine room is one of the most important space of a hydrofoil. It hosts all the mechanical components for the propulsion and for the technical facilities of the vessel, such as marine engines and electrical generators. In order to ensure the proper functioning of these components, an adequate air supply has to be guarantee. This is achieved thanks to the ventilation system, which provides the...
Mr
Alan Mahne Kalin
(University of Ljubljana, Faculty of maritime studies and transport)
Comfort on board
Paper
Propeller shaft vibrations can be an issue on many types of ships, specially passenger vessels. The main cause of this problem can be due to unsteady hydrodynamic forces acting on the propeller surface.
The problem is assessed first using a BE model to predict propeller forces and moments on the hub and then using FE model to predict vibration on places of interest, inside the vessel.
The...
Mr
DAVIDE TOZZI
(CETENA S.p.A:)
Stability, Seakeeping, Maneuverability
Paper
The use of simulation instruments which allow to predict or analyze the maneuvers to be performed on a real vessel are very common in the naval sector. Such a practice results from the need to make navigation increasingly safer, in order not only to avoid collisions between vessels in the open sea, but also to evaluate the most convenient maneuvers in confined spaces, such as for example in...
Mr
Sercan Erol
(Karadeniz Technical University)
Environment protection, electric system and ship energy efficiency
Paper
This paper presents the availability of producing electricity power from ship main engine’s waste exhaust gases. Hot exhaust gases reveals from ship main engines during sailing periods. After using waste exhaust gases at turbocharger and exhaust gas boiler, respectively, those gases discard through funnel to atmosphere in spite of still consisting of respectable energy. Therefore, recycling...
Mr
Daniele Bruno
(MICAD s.r.l.), Mr
Marco De Santis
(MICAD s.r.l.)
Stability, Seakeeping, Maneuverability
Paper
Project SOPHYA (Seakeeping Of Planing Hull YAcht) has as its general purpose the improvement of comfort and propulsion performance of pleasure motor planing craft, through the study of the correlation between the performance in rough sea and the state of the sea.
The project is founded by the FvG region with Monte Carlo Yachts, Uni-TS and SISSA as partners. During the study, a hydrodynamic...
Prof.
Simone Mancini
(Università degli Studi di Napoli “Federico II”)
Yacht, pleasure craft design and inland vessels design
Paper
Aim of this work is the analysis of the flow in the stern region of a by simulations.
In this work will be reported the numerical analysis of the flow around the propeller working in a stern-tunnel of a fully appended twin–screw fast displacement M/Y. Particularly, the aim of the study is the evaluation of the effects on the pressure and on the wake in the tunnel region, due to the diameter...
Mr
Edoardo Bassano
(CRMT), Mr
Romano Artioli
(CRMT)
Yacht, pleasure craft design and inland vessels design
Paper
All world countries, excluding the USA, are committed to reducing the GHG emissions of our planet. If this should not happen, the water level will rise and VENICE will need the help of the whole world for its survival. Venetian families are already fighting because the pollution caused by Diesel engines of the boats are higher than the maximum levels allowed by law, with serious consequences...
Mr
Carlo Augusto Pasquinucci
(Freelancer)
Numerical & experimental hydrodynamics
Paper
The democratization of CFD simulations helps the evaluation of several ship hull forms in few time.
With the post-processing of the resultant data, it is possible to understand better the influence of the geometry on the resistance, helping engineers in the configuration of good geometries also in early design stage. During this phase it is necessarily to use tool derived from statistical...
Mr
Carlo Augusto Pasquinucci
(Freelancer)
Numerical & experimental hydrodynamics
Paper
Hydrodynamic performance optimization of ship hulls is becoming popular in modern naval architecture, but for the cost, time and knowledge required, only research centers and big shipyards can afford it.
In order to help Companies in CFD Simulations, predefined templates created by software experts are becoming more and more available in CFD Solvers.
In parallel, in order to simplify the...
Mr
Davide Tozzi
(CETENA S.p.A)
Stability, Seakeeping, Maneuverability
Paper
Simulation and multimedia devices are nowadays essential features to be used both for design assessment and for training activities. In the naval field, the prototype of the ship is usually the ship herself, therefore a detailed simulation framework is becoming an essential tool to be used as a testbed in the design process. The same approach could be also applied for training phase, giving to...
carlo andrea bertoglio
(Hug Engineering Italia)
Ship propulsion, machinery and systems
Paper
The paper I’d like present want show the latest frontier in term of exhaust after treatment for 4 stroke engines used mainly in cruise and commercial Ships.The paper will collect last achievement obtained in the EU financed project: Leanships, where HUG, together with Fincantieri as technical partner, is developing a Demo Scale unit representative of a very innovative diesel particle filter...
Mr
Claudio Maggi
(Marina Militare Italiana), Mr
Mario De Biase
(Marina Militare Italiana), Mr
Simone Mancini
(Italian Navy - General Staff)
Numerical & experimental hydrodynamics
Paper
It is well known that during the life-cycle the growth of the ship weight is one of the main source of the performance-loss. Stern flaps have been used in many recent designs of transom stern vessels, in particular by the US Navy, to increase top speed or to realize improvements in fuel economy over the operating range. Furthermore, stern flap implementation has also become a practical...
Dr
Barbara Rinauro
(University of Naples Federico II Department of Industrial Engineering)
Stability, Seakeeping, Maneuverability
Paper
The development of IMO second generation intact stability criteria is based on a multilevel approach. In each level accuracy of analysis is increased and if a possible vulnerability is detected next level is applied.
A ship, depending on its characteristics and external conditions, may be considered vulnerable to one or more stability failure modes. For each stability failure mode, the study...
Mr
Catalin Faitar
(Maritime University of Constanta)
Ship propulsion, machinery and systems
Paper
Today, the primary source of propeller power is the diesel engine, and the power requirement and rate of revolution very much depend on the ship’s hull form and the propeller design. Therefore, in order to arrive at a solution that is as optimal as possible, some general knowledge is essential as to the principal ship and diesel engine parameters that influence the propulsion system. The...
Ms
Carmen Ferrer Julia
(University of Genoa)
Conceptual and practical ship design
Paper
From the beginning of history, navigating was a unique opportunity for growth and expansion. Thereupon, ships became an important part of civilizations and in them were imprinted unique cultural traits that distinguished them according to geography, historical period and usage characteristics.
As civilizations evolved, so did their cultural heritage, which if successful in design and...
Dr
Alessandro Rinaldi
(DIA - University of Trieste), Dr
Margherita Cipriano
(DIA - University of Trieste), Dr
Massimiliano Nolich
(DIA - University of Trieste), Dr
Paolo Ferrari
(DIA - University of Trieste), Dr
Raol Buqi
(DIA - University of Trieste), Dr
Sara Carciotti
(DIA - University of Trieste), Prof.
Walter Ukovich
(DIA - University of Trieste)
Conceptual and practical ship design
Paper
The cruise ship sector is becoming a major part of the North Americans’ tourism industry.
In order to guarantee passengers’ enjoyment of the travel experience, the cruise operators consider the comfort perception as a key quality attribute to increase the cruise attractiveness and, therefore, rise their income. However, there is a gap in the literature between the importance of the comfort...
Prof.
Blagovest Belev
(NVNA)
Environment protection, electric system and ship energy efficiency
Paper
Ship Energy Efficiency is the IMO topic of the day since 1997 after Kyoto Protocol issuing. All ships with gross tonnage 400 and over have to meet MARPOL Annex VI requirements. The Companies create and develop their own strategies based on personal experience.
The article describes a method for evaluation of the energy efficiency of maritime transport in the spirit of the Kyoto Protocol...
