m g a p o T ê 2009
International Conference on
Technology & Operation of Offshore Support Vessels
Proaramme & Abstracts
Jointly Organised hy
IK44Ü£ST
The Joint Branch ofthe Royal Institution of Naval Architects and The Institute of Marine Engineering, Science & Technology (Singapore)
C O R E
The Centre for Offshore Research & Engineering, National University of Singapore
Platinum Sponsors
Keppel
Singmarine
i i ii NiwG v rsi oNS U L S T E I N
Preface 3 O r g a n i z i n g Committee 4
G e n e r a l I n f o r m a t i o n 5 Conference Programme 7
P R E F A C E
The Joint Branch of the R I N A and the IMarEST (Singapore) along w i t h CORE (Centre for Offshore Research & Engineering), NUS continues its OSV series of the international conference i n its 3"^ time. A 2-day event comprising presentations of technical papers and the exhibition, this conference w i l l provide a p l a t f o r m for ship designers, shipbuilders, owners & operators, manufacturers & suppliers, classification societies, etc. to present and discuss future needs and challenges, as search f o r hydrocarbons moves into deeper waters as w e l l as into arctic frontiers of oil & gas exploration.
I w o u l d like to extend a very w a r m welcome to all the participants of this conference.
The "OSV Singapore 2009" provides an excellent opportunity for various machinery & equipment manufacturers, maritime professionals, shipyards, classification societies, regulatory bodies and academics to increase international contacts and cooperation to stimulate progress i n design and production technology for higher efficiency, better economy, improved safety and environment awareness of offshore support vessels.
This publication along w i t h the CD, w h i c h contains all abstracts and f u l l technical papers presented at the conference enables all individuals and organizations an easy access to a valuable source of information. The main topics are design & safety, propulsion & propellers, dynamic positioning, classification and statutory requirements for safety & environment, etc.
I w o u l d like to thank all authors / presenters, speakers and session chairpersons for their time, efforts and contributions to this conference. I w o u l d like to thank all sponsors, advertisers and exhibitors for their support and interests. I w o u l d also like to thank CORE for being a joint organizer of this prestigious event. The contribution f r o m Professional Activities Centre (PAC) of NUS is w e l l acknowledged.
Special thanks to fhe conference organizing committee members for their time and effort towards this event and also to all council members of the Joint Branch, w h o have given their support.
In the end, I w i s h y o u all a very f r u i t f u l corvference i n this exciting field of OSVs. Thank you!
Dr. Ir. Arun Kr. Dev BSc(Eng) MSc PhD
CEng Eurhig FRINA M S N A M E MECOR CMarTech CMarEng FIMarEST FSNAMES
Chairman, the Organizing Committee of "OSV Singapore 2009" Chairman, the Joint Branch of the R I N A and the IMarEST (Singapore) Fellow, fhe R I N A Council, U K
ORGANIZING COMMITTEE
AdvisorYoo Sang Choo
Chairman
A r u n Kr. Dev
Members:
Chong Wen Sin Leong Yue Kong Tan K i m Pong Rasim Asgarov
Conference Manager
K o k Keong Cheah
G E N E R A L INFORMATION
Date: 6* - 7* August 2009, Thursday and Friday
Venue: Engineering A u d i t o r i u m NUS Faculty of Engineering 9 Engineering Drive 1 Singapore 117576 Tel: +65 6516 5113
If you are taking your -private transport, please note that limited parking lots (luhite lots) for visitors are available at Carpark 2A / Carpark 2. Alternatively, you may park FOC at the Kent Vale Carpark. From the Kent Vale Car Park, you can walk Engineering Auditorium.
Dress Code: Shirt & Tie (Office attire)
Conference Secretariat
For urgent matters on-site, you can contact the Secretariat at Mobile no. +65 9862 6341
Pre-Conference Welcome Reception
5* August 2009, Wednesday 6:00pm to 8:00pm Mercury 1, Level 5 Furama RiverFront 405 Havelock Road Singapore 169633 Tel: (65)6733 2081
Conference Banquet Dinner
6* August 2009, Thursday
Cocktail reception w i l l begin at 5:45pm; dinner w i l l commence at 6:45pm Nautical Room 11 & 111, Level 2
Republic of Singapore Yacht Club 52 West Coast Ferry Road
Singapore 126887 Tel: (65) 6768 9288
Please wear your name badge at all times for identification purposes. It is required for entry to all technical sessions and meals.
Transport Schedule
6th August 2009, Thursday
8:00am Leaving f o r Furama RiverFront f o r NUS
5:30pm Leaving NUS for Republic of Singapore Yacht Club
8:45pm Leaving Republic of Singapore Yacht Club for Furama RiverFront
7th August 2009, Friday
Instruction for Oral Presentation
1. Each oral presentation* is hmited to 40 mins, inclusive of the Q & A . K i n d l y allow for 10 mins for the Q & A . The Chairs of the sessions w i l l be keeping to the time strictly They w i l l sound the bell once when the 30 mins have passed. You should make a suitable conclusion to y o u r presentation by then.
2. Presentation should preferably be done using MS Powerpomt 2003 or compatible. A laptop w i t h L C D projector w i l l be made available for all sessions. To minimise technical difficulties, we request all presenters to save their presentation to a USB storage device i n a format that can be read by MS Powerpoint 2003 or compatible on a Window-based PC.
3. Presenters should transfer their files to the laptops as early as possible. Preferable times f o r presenters to load i n their files are d u r i n g coffee-breaks and lunch. A student assistant w i l l be available to assist the authors.
4. Presenters are requested to submit a short CV for the Session Chairs at the beginning of the session. A standard f o r m is available at the registration counter.
IVIap 1
Conference Progrnin
C O N F E R E N C E PROGRAMME
Wednesday, 5 August 2009
6.00pm - 8.00pm Pre-Conference Welcome Reception Mercury 1, Level 5
Furama RiverFront 405 Havelock Road Singapore 169633
Thursday, 6 August 2009
8.15am Registration & Welcome Coffee/Tea
9.00am Opening Ceremony
Opening Address by
LRET Professor Choo Yoo Sang Immediate Past President, IMarEST
Director (Research), Centre for Offshore Research & Engineering, NUS Welcome Address by
D r A r u n Dev
Chairman, T/je Joint Branch ofthe RINA and tiie IMarEST (Singapore) Chairman, Tite Organizing Committee of "OSV Singapore 2009"
Director, Neivcastle University Marine International (NUMI) - Singapore Speech by Guest-of-Honour
M r L a m Yi Young
Chief Executive, Maritime and Port Authority of Singapore Keynote Paper 1:
New Challenges in the Design of Offshore Support Vessels (OSVs)
Havard Stave, Ulstein Design AS
page 11
10.00am Tea/Coffee Break
10.30am Efficient and Reliable Propulsion Systems for Offshore Support Vessels
Terje N o r d t u n , Wartsila Ship Power OffsJwre
page 12
U.lOam Fuel Saving and Reduction of Environmental Emissions in O S V and A H T S by use of Electric and Hybrid Propulsion
A l f Kare Adnanes, ABBAS
page 13
11.50am A Review of D P Station Keeping Incidents and Systematic Safety
Management
Brian P. Jenner, SEAWISE Maritime Services
page 14
12.30 am Lunch
1.30pm Ten Major Design Evolutions of the Humble O S V
B.H.Wong, Ezra Holdings
Conference Program
2.10pm New I M O Requirements for Coating of Ballast Water Tanks — Challenges and Solutions
Jan Weitzenböck, Helge Void, Gisle Hersvik and Bjarne Jansen, Det Norske
Veritas
page 16
2.50pm Voith Schneider Propeller (VSP) —
Investigations of the Cavitation Behaviour
D i r k Jürgens and Hans.-Jürgen Heinke, Voitit Turbo Schneider Propulsion Gm,
& Co. KG
page 17
3.30pm Tea/Coffee Break
4.00pm Numerical Prediction of Cavitation Flow on a Marine Propeller using a C F D Code
J.S. Rao and M . Saravanakumar, Altair Engineering India Pvt. Ltd
page 18
4.40pm Class Rules and Complementary C F D Simulations for O S V s
Helge Rathje, Thomas E. Schellin and Jan Kaufmann, Germanischer Lloyd
page 19
5.20pm End of Day 1
5.45pm Conference Banquet Dinner
Bus w i l l leave f r o m NUS to dinner venue at 5.30pm
Cocktail reception w i l l begin at 5.45pm; dinner w i l l commence at 6.45pm Nautical Room 11 & 111, Level 2
Republic of Singapore Yacht Club 52 West Coast Ferry Road
Singapore 126887
Conference Program
Friday, 7 August 2009
9.30am Keynote Paper 2:
Developments in Ship Propulsion —
Efficiency, Fuel Consumption and Environment
H e i k k i Soljama, ABB AS
page 20
Keynote Paper 2:
Developments in Ship Propulsion —
Efficiency, Fuel Consumption and Environment
H e i k k i Soljama, ABB AS
10.10am Tea/Coffee Break
10.40am Optimising Propulsion Systems for A H T S Vessels
Jens Ring Nielsen and Henrik Marinussen, MAN Diesel SE
page 21
11.20am Offshore Support Vessel Sector Adds New Category — Wind Installation Vessels
M a r t i n Hruska and Michael A. Sano, American Bureau of Shipping
page 22
12.00am Lunch
1.00pm Active Roll Compensation System for Helidecks
U w e H e i m and Tom Christian Dahl, ITS Offshore Handling Equipment AS
page 23
1.40pm U S B L Systems - Pushing the Performance Boundaries
N i c k Smedley, Sonardyne Asia Pte Ltd
page 24
2.20pm A New Weighted Support Vector Regression and its Application in Ship's
Principal Particulars Mathematical Modeling
Dongqin L l , Yifeng G U A N and Can W U , Jiangsu University of Science and
Technology
page 25
Abstracts
A B S T R A C T S
K E Y N O T E PAPER 1
New Challenges in the Design of Offshore Support Vessels (OSVs)
Havard StaveDeputy Managing Director, Design Manager, Ulstein Design AS
This paper describes systematicaUy the salient features of new challenges i n design of offshore support vessels (OSVs). The revolutionary introduction of ULSTEIN X-BOW® has been a remarkable design feature since inception of offshore support vessel i n Gulf of Mexico more than a half century ago. Advantages of X-BOW have been provided compared to conventional raked bow w i t h or w i t h o u t a bulb. Various merits of X-BOW i n regard to h u l l design, resistance & speed, etc. have been p u t f o r w a r d .
Other challenges like N O x & SOx emission control through fuel efficiency have been described i n relation to propulsion power and machinery configuration. Various aspects of diesel mechanical (conventional), diesel electrical and diesel mechanical & electrical (HYBRID) have been mentioned.
Various ideas like wet exhaust system, all around (360 degrees) views, etc. have also been mentioned. The continuous demand i n more deck area & cargo carrying capacity for p l a t f o r m supply vessels (PSVs) and deep water operation resulting i n demand of larger anchor h a n d l i n g / tug supply (AHTS) vessels are additional design challenges. ULSTEIN has initiated to come out w i t h solutions like M u l t i - A p p l i c a t i o n Cargo Solutions (MACS), and i n collaboration w i t h strategic partners such as EVOMEC (Norway), ULSTEIN has contributed to the development of novel concepts for moveable deck extensions (MODEX''"'^')/ safe hose handling systems etc., w h i c h are important milestones i n innovative design solutions f o r the OSV industry.
A n OSV being neither a cargo vessel nor a passenger vessel is often subject to SFS (Special Purpose Ship) Code of I M O . But recent changes i n MSG 235(82) have brought new changes i n damage stability criteria w i t h further stringent criteria i n MSC 266(84). Further, D N V and N M D are talking about introduction of anchor handling notations and legislations.
W i t h the opening of new frontiers i n arctic areas, OSV design cycles n o w meet again new challenges of l o w temperature, reduced light, dealing w i t h sea ice (ice class and ice breaking capability), crew comforts, etc. as added features i n design of OSVs.
Abstracts
Efficient and Reliable Propulsion Systems
for Offshore Support Vessels
Terje Nordtun
Wartsila Ship Power Offshore
Offshore Support Vessels have increasingly developed into larger and more p o w e r f u l ships responding to new operational requirements and the need for more reliable and multipurpose designs. Efficient utilization of the machinery installation for different operational modes is also becoming more important w i t h today's increasing fuel prices and focus on reduction of exhaust gas emissions.
Wartsila has for many years been strongly involved i n developing a w i d e range of propulsion concepts for Offshore Support Vessels meeting different vessel requirements. The systems are ranging f r o m basic diesel mechanic installations to advanced diesel-electric systems. Selection of the most suitable propulsion concept, either if i t is mechanic-, electric- or a combined solution (hybrid), should always be based o n the specific operational requirements f o r each i n d i v i d u a l vessel designs. This paper w i l l address the propulsion system selection and optimizing process, and discuss w h i c h elements and operational parameters that need to be included i n order to assure the most efficient and reliable propulsion installation.
The Wartsila L o w Loss Concept (LLC) w i l l be presented specifically The LLC is an advanced diesel electric propulsion concept w i t h a number of advantages compared w i t h conventional systems. The m a i n characteristics of the L L C are reduced electrical losses, increased redundancy and higher reliability Better f u e l efficiency is achieved, and the architecture of the electric power distribution gives less single failure consequences, meaning higher safety and reduced operational risk. Finally, the system gives a substantial weight and space saving f o r the installation.
Abstracts
Fuel Saving and Reduction of Environmental Emissions in OSV and AHTS by
use of Electric and Hybrid Propulsion
Alf Kare Adnanes, Dr. Ing., MScEE
ABB AS, Business Unit Marine, 2 Ayer Rajah Crescent, Singapore
Electric Propulsion is used i n a w i d e range of vessel types and applications. I n Offshore Support Vessel (OSV) segment, a large portion of new buildings are equipped w i t h electric power plant w i t h variable speed electric motors to control the main propulsion and thrusters.
These days we also see a tendency that advanced Anchor H a n d l i n g Tug Supply (AHTS) beeing more and more equipped w i t h a combination of Diesel Mechanical and Diesel Electric propulsion (HYBRID) because economical analysis shows that potential operational benefits over the vessels life time are even higher than for Platform Supply Vessels (PSV). D u r i n g the last years, the focus and restriction on environmental emissions has been, and is further expected to be strengthened. The use of electric propulsion w i l l also contribute to reduction of green house gases due to the lower fuel consumption. N e w techniques f o r control and power conversion are made to further improve the environmental footprint of the vessels, such as the use of active rectifiers i n l o w voltage installations
Electric propulsion can prove substantial savings i n fuel costs and this w i l l hopefully stimulate the o i l industry to select the most o p t i m u m and innovative solution, and thereby also reduce the environmental impact f o r offshore operations.
Abstracts
A Review of DP Station Keeping Incidents and
Systematic Safety Management
Brian P. Jenner
SEAWISE Maritime Services
Recent station keeping incidents are presented and their causes discussed, w i t h a view to i d e n t i f y i n g hmitations i n DP station keeping abihty. This is put into perspective for the users of DP vessels. Areas of improvement are suggested, including FMEA style, format and integration w i t h a systematic ship safety management system i n a wider ranging risk identification process.
Abstracts
Ten Major Design Evolutions of the Humble OSV
Mr. B.H.Wong F.I.Mar EDirector Ezra Holdings Singapore
This short paper tries to highlight the design changes on the simple OSV brought about by onerous demands i n the fast evolving O i l and Gas drilling and production industry.
The presentation w i l l discuss the ten most important factors influencing the design of a multifunctional OSV.
1. Deep water anchor handling and support services,
2. The problems w i t h the disposal of toxic backloads, and d r i l l cuttings f r o m platforms, 3. Other environmental pollution issues and their effects on the OSV design,
4. Safety issues and the high number of Special Purpose personnel, 5. Noise and vibration control f o r crew and personnel comfort,
6. W i l l Diesel-Electric take over the traditional direct engine shaft propulsion? 7. Sub-sea services and the effect on the OSV design,
8. Is i t wise to incorporate the w e l l intervention f u n c t i o n on the OSV? 9. Is Dynamic Positioning ( A A A ) mandatory for some functions? 10. The 'Bourbon D o l p h i n ' disaster and the ensuing design changes.
Abstracts
New IMO Requirements for Coating of Ballast Water Tanks
- Challenges and Solutions
Jan Weitzenböck, Helge Void, Gisle Hersvik and Bjarne Jansen
Det Norske Veritas AS, Approval Centre Nonoaij, 1322 Hovik, Norway
The International Maritime Organisation (IMO) Performance Standard for Protective Coatings (PSPC) applies to all ships w i t h more than 500 GRT where the b u i l d i n g contract was placed on or after 1 July 2008. This means that the I M O PSPC may be relevant for many Offshore Supply Vessels (OSV). This paper outluies the motivation and background f o r the I M O PSPC and describes its main elements. Furthermore, i t discusses the main implications f o r shipyards and ship owners, i n particular some of the implementation challenges m relation to OSVs.
Abstracts
Voith Schneider Propeller (VSP)
-Investigations of the Cavitation Behaviour
Dr. Dirk Jürgens^, Hans.-Jürgen Heinke^
^ Voith Turbo Schneider Propulsion GmbH & Co. KG, Heidenheim, Germany ^ Potsdam Model Basin, Potsdam, Germany
The paper gives an overview of the cavitation behaviour of high loaded Voith Schneider Propeller (VSP) blades under bollard p u l l condition. Experimental investigations have been carried out i n the cavitation tank of the SVA Potsdam by using a high speed camera and measuring thrust and torque. There single propeller blades and one VSP have been measured. The forces and power of a vessel w i t h t w o VSPs were measured i n the cavitation tunnel of the University of Berlin / Germany. Different profile shapes of the VSP have been investigated and a new developed profile shows much better cavitation behaviour. The measured cavitation pattern shows that there is no erosion danger for VSP blades and the design point of the VSP is far away f r o m thrust reduction due to cavitation.
Abstrncts
Numerical Prediction of Cavitation Flow on a Marine Propeller using a C F D Code
J.S. Rao ^ and M. Saravanakumar ^
^ Chief Science Officer, Altair Engineering India Pvt. LTD, Bangaluru 560 087, India
2 CFD Engineer, Altair Engineering India Pvt. LTD, Bangaluru 560 087, India
I n this paper, n o n cavitating and cavitating flow around a b series marine propeller is studied using a rans c f d code. Incompressible rans equations are solved w i t h sst k-co model f o r the turbulence modelling. The predicted non-cavitating open water performance of the marine propeller agrees w e l l w i t h the analytical-experimental code propol.
The mixture multiphase model is used i n the current w o r k for the numerical simulation of cavitating flows based on the f u l l cavitations model w h i c h accounts f o r all first order effects i.e., phase change, bubble dynamics, turbulent pressure fluctuations, and non-condensable gases developed b y singhal et al. [1]. Before any attempt of computing cavitating propeller flows, we have validated against a benchmark problem f o r cavitating flows on clark-y h y d r o f o i l . The leading edge and cloud cavitation on the h y d r o f o i l is reproduced w e l l and shows good comparison w i t h the w e l l - k n o w n experimental data. Finally, the cavitating propeller performance as w e l l as tip and sheet cavitation is presented.
Abstracts
C l a s s Rules and Complementary C F D Simulations for O S V s
Helge Rathje', Thomas E. Schellin, and Jan Kaufmann"
*Rule Development, Analysis of Hull Structures & Damages ^^Engineering Services, Fluid Dynamics
Germanischer Lloyd, 20459 Hamburg, Germany
Today's offshore service vessels (OSVs) are larger, more specialized, and more technically sophisticated to meet demands of current deepwater field developments. Analysts forecast a steady g r o w t h of the global OSV fleet through 2020. The growing market initiated specific rule developments for such ships that resulted i n a new set of class rules presented here. There is increasing recognition that the design and normal operation of such ships differ sigmficantly f r o m those of general cargo ships. As a consequence, comprehensive international regulations are needed that take specific account of the practical constraints of these ships. Some of the difficulties faced b y designers of OSVs are caused by the operational requirements i n offshore environments. For example, intact and damage stability requirements need to account for the unobstructed stern area needed f o r cargo handling as w e l l as for duties such as anchor handling and towing. However, prescriptive class rules cannot cover all safety related design issues. Complementary computational fluid dynamics (CFD) simulations are suitable measures to assess safety aspects beyond the scope of class rules, such as operations i n severe seas that can adversely affect the ship's controllability, causing loss of stability that ultimately compromises the survivability of the ship. I n this paper, we demonstrated the ability of a Reynolds-averaged Navier-Stokes (RANS) solver to simulate the motion behavior of an OSV operating i n stern quartering seas as these motions may affect the ship's dynamic stability. Systematic investigations based on a validated CFD technique can be useful not only to develop, but also to continuously update OSV rules. The specification of design loads for OSVs under extreme conditions, f o r example, is a critical issue. To demonstrate this, we also performed simulations of the OSV i n severe head seas to obtain wave-induced slamming pressures i n the bow area.
Abstracts
K E Y N O T E P A P E R 2
Developments in Ship Propulsion
-Efficiency, Fuel Consumption and Environment
Heikki SoljamaHead of business unit Marine and Cranes in ABB
The environmental factor, or the "green factor" has d u r i n g the very recent years become astronger driver f o r technology development and design of ships and ships' equipment.
What we have seen so far, is expected to be only the beginning of what w i l l be one of the most critical factors i n the years to come.
NOx and SOx regulations already have come into force and w i l l for sure be supplemented by stricter local and international regulations, and I M O rules for ballast water treatment w i l l be ratified w i t h i n a short time.
Further, global or regional regulations on green house gas (GHG) emissions f r o m ships are claimed to be included i n the agreements to be made i n the Copenhagen meeting at the end of this year; after being quietly exempted f r o m the target C 0 2 reductions i n the Kyoto agreement.
Being a supplier of electric propulsion system, our solutions are directly influencing the environental footprint of the vessel, i n particular to greenhouse gas emissions, as w e l l as N O x and SOx. For a range of vessels, the electric propulsion itself is contributing to significant reduction i n the fuel consumption, and hence also the emissions. For OSV vessels, up to 40-50% reduction is achievable i n for example DP operations. This also reduces the f u e l costs accordingly, and electric propulsion has f o u n d its use i n not only OSVs, but also i n a range of ships where the savings tn f u e l costs justify the initial investment.
However, there are always room for improvements, and w i t h higher costs of f u e l or introduction of taxes o n emission, even small efficiency improvements may give large benefits for ship owners and charterers.
This paper elaborates o n the issues of environmental footprint of OSVs, and recent developments that w i l l lead to both reduction i n emissions and lower operational costs.
Abstrncts
Optimising Propulsion Systems for AHTS Vessels
Jens Ring Nielsen
Senior Manager, Propulsion R&D, MAN Diesel SE, Fr.havn Denmark
Henrik Marinussen
Research Engineer, Propulsion R&D, MAN Diesel SE, Fr.havn Denmark
The paper presents the design approach currently used by M A N Diesel for optimising AHTS performance. It is based on the extensive experience gathered over more than 30 years of supplying propulsion systems for the offshore industry.
The optimisation of the design at various stages of a project is outlined together w i t h the applied tools like CFD and F E M as w e l l as the inclusion of model and f u l l scale test experience.
The newly developed A H T (Alpha H i g h Thrust) propeller nozzle that was presented at the OSV conference i n 2005 has since g r o w n into a series of nozzles that can be used f o r different applications. The requirements and experience using this new nozzle type w i l l be explained, focusing on the hydrodynamics, cavitation and structural aspects.
A series of 120 ton bollard p u l l AHTS for Swire Pacific Offshore have since been commissioned and w i l l be used as an example to illustrate h o w the bollard p u l l can be maximised by f o l l o w i n g a holistic approach i n the design of h u l l , propeller, and a h i g h efficiency A H T nozzle.
The latest results f r o m an extensive cavitation test series of the A H T nozzle family w i l l be discussed w i t h special emphasis on the influence of cavitation on the performance of nozzles i n general and the A H T nozzle i n particular.
To ensure that the performance of the final manufactured nozzles are as predicted by calculations a set of quality standards have been introduced. The m a x i m u m allowable manufacturing tolerances have been set using CFD calculations of geometries diverting f r o m the theoretical one.
Abstracts
Offshore Support Vessel Sector Adds New Category -Wind Installation Vessels
Michael A. Sano
Senior Engineer, ABS, Corporate Energy Project Development
Martin Hruska
ABS Pacific, Director, Offshore Technology and Business Development for Pacific Division
The global demand f o r clean, renewable electric power is d r i v i n g the relatively y o u n g w i n d industry to expand capacity It is universally understood that energy needed to satisfy current and future w o r l d demand must come f r o m many different sources, i n addition to the traditional energy resources of oil, gas, coal and nuclear. W i n d is one of these optional sources. A 19 M a y 2009 article i n the Wall Street Journal titled 'Environmental Capital' stated that, i n spite of the current economic chmate and w o r l d w i d e recession, the w i n d industry w i l l continue to grow at more than 20% annually f o r the next five years. The same article reported that today w o r l d w i d e w i n d energy production is 120 gigawatts but is expected to reach 332 gigwatts b y 2013. I f achieved, this w i l l represent a 276% increase i n w o r l d w i d e w i n d generating capacity over the next five years.
Abstracts
Active Roll Compensation System for Helidecks
Uive Heim, Tom Christian Dahl*TTS Offshore Handling Equifment AS, Alesund, Norway
Helicopter access i n due time f o r crew change is crucial for many Offshore Support Vessels, and at times, delays represent a significant cost driver. Increasing the weather w i n d o w available f o r safe Icinding and take-off, w i l l have a direct impact on operational efficiency of many types of OSV.
TTS Offshore Handling Equipment AS, part of the TTS Marine Group of Norway, have developed an unique motion compensation system for Helidecks, solving some of the critical safety issues of landing a helicopter on m o v i n g Helidecks offshore. The TTS Active Roll Compensation system is the world's first motion compensated helicopter deck application. By combining well-proven technologies, w i t h a taste for «less is more» solutions, the system has been developed by TTS-OHE's team i n close interaction w i t h experienced offshore helicopter pilots, vessel crew and regulatory bodies.
The patented ARC- Helideck system is installed on t w o of the world's most advanced seismic vessels; PGS's Ramform Sovereign, and Ramform Sterling.
Abstracts
U S B L Systems - Pushing the Performance Boundaries
Nick SmedleyVP Operations, Sonardyne Asia Pte Ltd
This paper is focused on the usage of Ultra Short Baseline Systems (USBL) on Offshore Supply Vessels (OSV) and h o w a good system can add significant value to your vessel. It first introduces the USBL system and the tasks it can perform. Focus is then d r a w n to the sensors, interfaces and technology available f o r integration i n the system. H a v i n g identified what a USBL system is and the technology and sensors required, the paper looks into how the system can be installed or improved to meet criteria f o r USBL tasks. These tasks are then summarised and scenarios are identified whereby the correct USBL system can add value and a good representation of your vessel w h i c h w i l l result i n prosperous charters above and beyond typical OSV tasks.
Abstrncts
A New Weighted Support Vector Regression and its Application in Ship's
Principal Particulars Mathematical Modeling
Dongqin LI, Yifeng GUAN, Can WU
School of Naval Architecture and Ocean Engineering,
Jiangsu University of Science and Technology Zhenjiang, Jiangsu Province,P.R, China, 212003
Mathematical modeling on ship's principal particulars is a very important and useful task. The Support Vector Machines (SVM), a new general machine learning method based on the frame of statistical learning theory is an effective method of processing the non-liner classification and regression. Because of its solid theoretical background and excellent generalization performance, i t has become the hotspot of machine learning. This method can solve those practical problems such as limited samples high dimension non-linear problem and local m i n i m u m . Recently, Support Vector Regression (SVR) has been introduced to solve regression and prediction problems and w i d e l y used i n many fields. With the analysis of both advantages and disadvantages of current support vector regression based on Gaussian kernel function, we propose a new weighted support vector regression algorithm i n this article, thus the rigorous constraint is overcome that maintains "corresponding parameters of kernel f u n c t i o n support vectors should be equal". I n this proposed algorithm,
f
llv - V 1'^ ^ a new kernel function is brought f o r w a r d w i t h weight factors: Ar(ji:,.,,v^.) = exp 2 3CT, + CT and the weight vector W = (w,, w,, • • •, w„ )^ is decided by the input vector X = ( x , , , • • •, j„ f . A n d based on this new proposed SVR method, we apply i t i n the offshore support vessel's principal particulars mathematical modeling i n scientific research project, and compare the result w i t h ordinary regression method and Neural N e t w o r k method. The results of experiment show the practicability and effectiveness of this algorithm tn the field of ship's principal particulars mathematical modeling.
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FIT TOGETHER
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D r y d o c k s W o r l d - S E A s i a b r i n g s t o g e t h e r e s t a b l i s h e d o f f s h o r e r i g c o n s t r u c t i o n , s h i p b u i l d i n g , c o n v e r s i o n , a n d s h i p r e p a i r e x p e r t i s e l o c a t e d at c r o s s r o a d s o f t h e w o r l d ' s b u s i e s t s h i p p i n g l a n e s a n d c l o s e to m a j o r o f f s h o r e oil & g a s f i e l d d e v e l o p m e n t s . W i t h 2 9 b u i l d i n g b e r t h s , 8 f l o a t i n g d o c k s , a n d a s p e c i a l i s e d r i g b u i l d i n g y a r d , w e h a v e s o l u t i o n s to all y o u r n e w b u i l d i n g , c o n v e r s i o n , a n d s h i p r e p a i r n e e d s . a D u b a i W o r l d c o m p a n yA Win-Win Solution
Good for the environment.
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Offering fiigh fuel efficienq and clear environ-mental benefits, electric propulsion is today tlie technology of choice for an increasing number of ship owners, ship designers and yards. For modern offshore vessels, ABB provides low-emission electric propulsion solutions designed for optimal efficiency and performance. Highly qualified ABB project engineers provide low risk project execution and our dedicated global service teams ensure fast response whenever and wherever needed. ABB is the frontrunner in electric propulsion and is dedicated to creating more competitive, safer and cleaner vessel operations for our customers. Visit us at www.abb.com/marine
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Offshore Vessels
it's about leadership. DNV Offshore Support VesselsYour business needs power tliat is uncomplicated, fast and reliable. Our tried-and- tested engine solutions for offshore applications make that possible even under the most extreme operating conditions. It's that simple. Find out more at www.mandiesel.com
MAN Diesel - Powering the World
Voith Schneider Propeller for Platform Supply Vessels
Platform Supply Vessels with VoithSchneider Propellers are the most eco-nomical solution. Fuel savings of 10 to 20% can be achieved. Voith Roll Stabi-lization increases safety and ensures operation in bad weather conditions.
Excellent maneuverability makes the VSP highly suitable for DP-operation. With Voith Turbo your ships stay world-wide on course.
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