TRIMARAN HULL DESIGN FOR FAST FERRY APPLICATIONS

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "TRIMARAN HULL DESIGN FOR FAST FERRY APPLICATIONS"

Transcription

1 TRIMARAN HULL DESIGN FOR FAST FERRY APPLICATIONS Stefano Brizzolara, Marco Capasso, Marco Ferrando, Carlo Podenzana Bonvino Dept. of Naval Architecture and Marine Technologies, Univ. of Genova, Italy; Antonio Cardo, Alberto Francescutto Dept. of Naval Architecture, Ocean and Environmental Engineering, Univ. of Trieste. ABSTRACT: Research studies about hydrodynamic performance of trimaran hull configurations and their application to real ship design, are relatively recent, having generally appeared in the last two decades of the last century, without relevant follow up in the shipbuilding world. The proposed paper aims to describe the main features of the hydrodynamic design of a trimaran ship as an alternative solution to contemporary mono hull or catamaran fast ferries (36-40 knots of service speed). This work has been developed in the frame of a three year joint research project of the Departments of Naval Architecture of the Universities of Genova, Trieste and Napoli and the University of Ancona. Comparison of the main resistance and seakeeping properties of two different trimaran design (having different hull forms but equivalent in terms of main geometric parameters and total displacement), tested in model scale with different side hulls positions will be addressed in the paper. The design exercise presented in the paper has comprehended also other aspects such as the implications that different hull typologies can have on the general layout of the vessel, problems related to the intact and damaged stability, internal spaces and propulsion arrangements.

2 INTRODUCTION After Triton (the trimaran demonstrator built by DERA in 2000 [1] the shipbuilding world became conscious that modern and efficient ships could also be built having a trimaran hull configuration. Nevertheless, the advantages and implication of trimarans in terms of the general ship design have been rarely published [2]. Aiming to fill this gap this paper proposes a comparison between the main characteristics of two different hull geometries for a fast ferry trimaran for commercial applications. The design of both trimaran hulls has been based on an initial market survey which brought to the definition of the basic reference design conditions, such as the merchant ship type, mission profile and payload. As a result of this study [3], the Mediterranean sea scenario and a medium size fast ferry able to carry passengers and cars having the following design characteristics were selected: - Main hull L/B>10 - Displacement of each side hull: about 5% of total - Maximum total breadth: approx. 28 m - Service speed: up to 40 knots - Payload: 800 passengers and 240 cars The value of L/B ratio of the main hull (taking into account that a total breadth around 28 m allows the vessel to use standard harbor facilities for monohull vessels), relatively lower with respect to other trimaran designs, was chosen in order to obtain a reasonable breadth of the lower car decks of the main hull, while preserving reasonably low wave resistance at high speed, and good seakeeping. Having a maximum speed exceeding (by more than 50%) the value of computed at the design displacement volume, the trimaran is to be considered a high-speed craft and falls under the regulations of IMO HSC Code. The amount of buoyancy reserved to the side hulls was selected as a compromise to obtain additional reserve of buoyancy for stability and to limit as much as possible the increase in total resistance. The first trimaran design was prepared as a consequence of the first design spiral performed for the feasibility project. Subsequently, an alternative hull design for the same targets has been prepared [4] allowing an interesting comparison between the two different hull geometries, equivalent from the main design specifications, i.e. payload, speed, range and main geometric parameters relevant to the resistance and seakeeping performance of the vessel. Both hull geometries are described in detail in the next sections. The two main and side hulls have been designed in such a way to be fully interchangeable, to permit a direct comparison of the effect of the hull typology on the hydrodynamic performance of the trimaran, without any other side effects due to the variation of main geometric parameters such as length and displacement or initial attitude, for instance.

3 HULL FORM GEOMETRIES Different design of both central and side hulls has been done from the first to the second model. Main geometrical characteristics of the two alternative main hulls and corresponding side hulls are given in Table 1. The first trimaran features a main typical fast round bilge hull (Figure 1) having V-type bow sections with low flair and stern U-type sections closed towards the transom in both vertical and transversal directions. The deadrise angle of the main section is around 15 deg.. The longitudinal prismatic coefficient was kept rather low (0.645) to limit wave resistance together with the high slenderness ratio L/B and L/ 1/3. Side hulls were designed like with hard chines forms (Figure 1) with simple slightly convex bow sections, high deadrise angle of the Tab. 1: Main geom. characteristics of both design main section (abt. 29 deg.) and slightly warped aft straight sections. The main hull of the second model was chosen of Deep-V type (Figure 2). In the case of high speed monohull ships, in fact, it was shown that Deep-V hull forms have considerable advantages over conventional round bilge hulls, in terms of resistance and seakeeping ([5] and [6]) at high speed. The idea, then, was that of check these advantages also in the case of a trimaran ship. The main Deep-V hull features simple transverse section made of straight line having high deadrise angle at the main section (abt. 34 deg.), same length and displacement of the previous hull as well as same C P and LCB for a fairer comparison of the residual resistance of the two alternative main hulls. The fullness of the main section results lower than that of the first round bilge hull so a higher breadth and draft were necessary to obtain an equal displacement. Stern bottom lines, still straight, are highly warped toward the transom where the bottom becomes almost horizontal and the sections close gradually in transversal direction. The same transom area was maintained for both main hulls, in order to permit the same waterjet arrangement and roughly the same contribution of the transom wave formation to the wave resistance. The side hulls of the second model (Figure 2) were re-designed as well, assuming simple symmetric U-type section with a very small transom. The models of the two trimarans were built to a scale of 1:60 and tested in the towing tank of the University of Genova for still water resistance tests and in the towing tank of the University of Trieste for seakeeping. The trimaran models were built in ABS material by means of a modern technique used in mechanical engineering for rapid prototyping (Fused

4 Figure 1: Body plan of the main round bilge hull and of the asymmetric side hulls (half side of the body plan) of the first trimaran deposition Modeling), with an overall accuracy of about +/- 0.15%. Having defined Clearance and Stagger as follows, it was decided to test the model with a systematic variation of stagger and clearance of the side hulls side hulls according to the test matrix presented in Table 2. Stagger (%) = Long. distance between the side hulls transom and the main hull transom, in percent of a reference main hull length equal to 120m. Clearance (%) = Lateral distance between the external side (in case of first model) or symmetry Table 2: Clearance and Stagger test values Figure 3: Variation of the absolute clearance (CL) and the absolute stagger (ST) for symmetric and asymmetric side hulls Figure 2: Body plan of the main Deep-V hull and of the symmetric side hulls of the second trimaran plane (in case of second model) of the side hulls and the main hull symmetry plane, in percent of a reference main hull length equal to 120m. A sketch illustrating the relative hulls positions for different values of Clearance and Stagger is provided in Figure 3.

5 Figure 4: General plan of the first trimaran fast ferry design Figure 5: Embarking car deck and engine room views of the second trimaran GENERAL ARRANGEMENTS Two possible solutions regarding the general arrangements of the trimarans are shown in Figure 4 and 5 at a Stagger and Clearance values close to the optimal solutions from the resistance point of view (PL1-PT1 for both trimarans as explained in resistance paragraph).

6 As reported in the following the comparison between the trimarans will start from the just mentioned figures as explanatory enough. The main car deck, in fact, although strongly conditioned by the configuration chosen, is not influenced by the effect of the side hulls shape, extremely narrow for both trimarans. Focusing the analysis on the consequences that a choice of the main hull geometry has on the payload, it is possible to note that the embarking car deck, thanks to an highest local hull breadth, allows an increase of about 10% for the loaded cars (from 65 to 72). Since also the hoistable car deck and the lower car deck behave in the same way, the main hull shape of the second trimaran is more effective in terms of load capacity of the ship. As visible from the engine room views of Figure 4 and 5, the distribution of the hull volume at the stern (especially with regards to 2 ½ and 3 water line) allow to maintain the same engine arrangement for both trimarans and hence the theoretical validity of the present comparison. STILL WATER RESISTANCE Both models of trimarans have been tested at DINAV Towing Tank at Froude numbers in the range to (full scale speed range knots). For some of the hull configurations of the first trimaran, the tests at the highest speeds were not performed due to an unfavorable interference between the wave formation of the central and the side hulls, so bad to produce a very Figure 6: Full scale effective power (PL1 configurations) Figure 7: Full scale effective power (PL2 configurations)

7 Figure 8: Full scale effective power (PL3 configurations) Position L1 L2 L3 T0 x x x T1 x T2 x T3 x high internal wave crest, ultimately causing danger of model flooding. In this paper the comparison of performance between the two hulls is discussed in terms of effective power at full scale, the resistance being predicted with ITTC-57 procedure. For the first model, as presented in [7] and [8], the towing tank tests indicated that the minimum value of P ES in the intermediate speed range (25-30 knots) is occurring at high clearance and low stagger values (PL1-PT3) or for low stagger and intermediate clearance values (PL1-PT2). On the contrary, the trends at higher speeds show that the minimum P ES is obtained for low stagger and clearance values (PL1-PT0 and PL1-PT1, transom in line and side hulls closer to the main hull), taking into account that also the configuration PL3- PT3 provides comparable results, against a less realistic solution as regards internal arrangements. This finding is in quite good agreement with results from Ackers et al. [9] which were used in the preliminary power estimation of the research project. This agreement is obviously qualitative, since Ackers results are given in terms of percent interference while our results are total resistance at full scale. In Figures 6, 7, and 8 trimaran full scale effective power curves P ES are given for the different clearances at constant stagger values for both trimarans (first number indicating the trimaran design version, so 1PT0 is the first trimaran with clearance PT0). Tests results, in fact, were performed fisrt for six configurations of the second model, which have been tested first since they resulted to provide the lowest values of resistance for the first model (see table 3). In all the configuration tested, the second hull design showed a better resistance than the first. This difference can be ascribed essentially at the difference Table 3: Second model configurations between hull form typologies, having the main parameters affecting the residual resistance almost the same value among the two models (L WL, C P,B/T,). Moreover being the wetted surface of the second model notably higher than the first one, the relative advantage on the residual resistance in even more pronounced than what appears from the total resistance. More details about the tests results and analysis can be found in [7,10]. In any case already in previous studies in the case of monohulls, deep-v hull forms showed advantages over conventional round bilge hulls especially at highest speeds. In this case, at V S =42 knots the 2PT1-PL1 solution (P ES = 26MW) is in absolute the best denoting an advantage of about 10% over the first trimaran (1 PL1-PT1; P ES = 29MW).

8 SEAKEEPING Besides the still water resistance tests, a campaign of tests in head regular waves to check seakeeping qualities of the two hulls was planned on the basis of the best configurations identified as regards performance in calm water. The results, in this paper reported in terms of added resistance and heave transfer functions compared with a same length monohull (frigate) optimised for seakeeping, are reported in Figure 9 and in Figure 10. More detailed results concerning seakeeping are going to be presented in [11]. To avoid excessive flooding of the models due to green water in head waves, a maximum ship speed of 30 knots and a small wave amplitude (at fixed steepness equal to 1/100 for both trimarans) was adopted. Due to the difference in longitudinal position of the centre of gravity of the different trimaran configurations, heave was reported in all cases to the middle perpendicular. The lower vertical motions of the second design shown by the heave transfer function in Figure 9 can be correlated with the deep-v shape of the central hull, usually having more vertical motion damping than equivalent round bilge monohull [6] at higher speeds (Fn= ). Present study was more oriented to the analysis of the effect of position of outriggers. Tests are actually under schedule with different combinations of side-main hulls (such as all deep-v hulls). The cross analysis of these tests will allow the assessment of the influence of the side hull geometry and form on the global behaviour of the trimaran ship. For sake of comparison between the two trimarans, the case of added resistance corresponding to wavelength equal to ship length (which is close to the maximum), is reported in Fig. 10. Taking into account that the same values of displacement and L WL of both trimarans allow a direct comparison between the two Figure 9: Heave transfer function of first trimaran design at Vs=30 kn (Frigate: without marks ) models, both diagrams show a certain improvement in performance of the second design,

9 Figure 10: Added Resistance comparison of both trimaran design at different speeds especially in the PT3-PL3 configuration at high speed. The configuration PT0-PL1, identified as the best for to side resistance, does not result to be the best for the added resistance, where the case PL3-PT3 results in advantage. In these terms a compromise in the design solution is in general necessary, depending on the priority scale of the performance assumed (comfort and operability against fuel consumption and speed). STABILITY As regards stability, both trimaran designs have been checked with respect to present criteria of the IMO/HSC rules. A trimaran ship, as expected, has in general an intermediate static stability between those of monohulls and catamarans. Despite a very high intact stability, the conditions become critical when an asymmetric flooding is considered, as arguable from figure 12. Figure 12, in fact, synthesises the verification of the most stringent stability requirements in the intact condition (a) and for two damaged condition corresponding to the side (b) and bottom(c) damage cases foreseen by actual IMO-HSC rules, i.e. the sided + gusting + heeling due to passenger crowding or high speed turning. Especially in the asymmetric damaged condition the righting arm curve of the trimaran has an evident slope discontinuity around Figure 11: Initial and modified watertight volumes of the second trimaran design (in the static equilibrium angle for the asymmetric damaged condition c) degree (depending on the analysed case and trimaran design) caused by the emergence of the intact side hull opposite to the heeled side. The subsequent drastic loss of righting moment (that would be dramatic in the case of a catamaran) is mitigated by the contribution to stability of the trimaran main hull and by the above water volumes of the damaged side. Monohull fast ships, on

10 Figure 12: Verification of worst dynamic criteria of intact (wind + gusting + high speed turning) and damage stability (crowding +wind) for multihull ships. First trimaran design (left) and second trimaran design (right).

11 the other hand, do not suffer at all by this problem, having in general symmetric flooding which can bring, instead, to freeboard problems with respect to the lower car deck. To better appreciate the effect of buoyancy reserve of the side hulls during dynamic heeling moment, first the second trimaran has been intentionally verified with slender side hulls also in the above water portion (see figure 11). And in fact this extreme layout (unrealistic also for structural reasons) cannot satisfy the dynamic criteria in the case of worst asymmetric damaged condition (i.e. side damage of case c) of figure 12), while intact and bottom damaged criteria (case a and b) are satisfied. In summary, the trimaran designer as in the case of catamarans has to be very well aware of the risks of asymmetric flooding and in particular he is required to provide a convenient shape to the above water side hull to cope with the dynamic stability requirements of the IMO-HSC code, once having fixed the lateral position of side hulls from resistance or seakeeping considerations. CONCLUSIONS Two different designs for the same target ship, a trimaran fast ferry operating in the Mediterranean sea, differing mainly in the hull form typologies, have been described and analyzed in the paper with regards to basic design characteristics (general arrangement, propulsion, stability, etc.) and hydrodynamic performance as regards resistance and seakeeping. The second hull form is based on a deep-v main hull, similar to those used in modern monohull fast ferries, in alternative to the more conventional round bilge first main hull. The design exercise confirmed in both cases a appreciable freedom in the plan of internal arrangement and a great margin on intact and damaged stability if proper volumes in the above water portion of the side hull are reserved. As regards damaged stability the trimaran, in fact, behaves in a intermediate way respect to a monohull and a catamaran, mitigating the negative effects of an a- symmetric flooding (of side hull), that can result to be dramatic for a catamaran. Predicted still water resistance at full scale of both designs, based on model tests with different relative position of side hulls, show a general marked advantage of the second design against the first one, in the medium-high speed range for all the best positions of lateral hulls found for the first design, the best overall position of side hulls, at high speed, being the less advanced and relatively closest one. Seakeeping performance of the second model results also advantageous, especially at high speed for heave motions and added resistance. The configurations featuring the best resistance and seakeeping performance are not the same in both designs, so the designer needs to do, in general, a compromise taking into account damage stability and general layout at the same time. Further activities will comprise the completion of systematic tests for all all the other possible configuration (obtained by interchanging main and side hulls). A deeper analysis will be devoted to assess the relative

12 performance of designed trimarans against actual monohull fast ferries, since from preliminary consideration they do not show marked advantages. NOMENCLATURE SYMBOL S.I. UNIT DESCRIPTION A TR [m 2 ] transom area A X [m 2 ] main section area B WL [m] max beam on WL C B = /(B WL L WL T) block coefficient C P =/(A T L WL ) prismatic coefficient C WL waterplane area coefficient C X main section area coefficient D [m] depth of ship on MP Fn= V / (g L WL ) 1/2 Froude number g [m/s 2 ] gravity acceleration h trans [m] transom draft L OA [m] over all length LCB longitudinal centre of buoyancy L or L PP [m] length between perpendiculars L WL [m] length of waterline P ES [kw] full scale effective power S [m 2 ] wetted surface T [m] draft V S [m/s,knots] ship speed V m [m/s,] model speed [m 3 ] volume w [m] wave length h w [m] wave height HTF [m] heave transfer function e [rad/s] encounter frequency REFERENCES 1. Various, R.V. TRITON: Trimaran Demonstrator Project (2000) Proceeding RINA Conference, Southampton (U.K.), April Pattison D. R., Zhang J.W., (1994), Trimaran Ships, Transactions of Royal Institution of Naval Architects, Vol. pp Benvenuto, G., Brizzolara, S., Figari, M., Podenzana Bonvino, C., (2001a) Fast Trimaran Ships: Some Examples for Commercial Application, Proc. HIPER'01, 2nd Int. Euroconference on High Performance Marine Vehicles, Hamburg, July 2001, pp Brizzolara, S, (2002) Design of New Trimaran Hull Forms with Deep-V Main Hull and Round Bilge Side Hulls, in Alternative to the First DINAV Trimaran Design: Body Plan, Hydrostatics and Stability, DINAV Internal Report SB (in Italian). 5. Brizzolara, S., Grossi, L., (1997) Design Aspects and Applications of Deep- V Hull Forms to High Speed Crafts, Proc. of IMDEX 97 International

13 Maritime Defence Exhibition & Conference, Greenwich-London, October Grossi, S. Brizzolara, L. Sebastiani, G. Caprino (1998), Seakeeping Design of Fast Monohull Ferries, Proc. of PRADS 98 International Symposium on Practical Design of Ships and Mobile Units, Den Hag, Sept Capasso, M., Ferrando, M., Podenzana Bonvino, C., Cardo, A., Francescutto, A., (2001) Study of the Hydrodynamic Performances of a Trimaran Ship for Fast Transportation, Proceedings 1st Int. Congress on Maritime Transport, Barcelona, November 2001, Olivella Puig et al. Eds, pp Cardo, A., Francescutto, A., Capasso, M., Ferrando, M., Podenzana Bonvino, C., "Hydrodynamic Performance in Waves of a Trimaran Ship", CD Proceedings of 10th International Congress of IMAM, Rethimnon, May Ackers B., Michael T.J., Tredennik O.W., Landen H.C., et al., (1997), An investigation of the Resistance Characteristics of Powered Trimaran side- Hull Configurations, SNAME Transactions, Vol. 105, pp Cardo, A., Ferrando, M., Podenzana Bonvino C., (2003) Influence of hull shape on the resistance of a fast trimaran vessel, to appear on Proceedings of FAST 2003 Conference, Sorrento (Italy). 11. Brizzolara, S., Capasso, M., Francescutto, A., (2003) Effect of hulls form variations on the hydrodynamic performances in waves of a trimaran ship, to appear on Proceedings of FAST 2003 Conference, Sorrento (Italy).

RESOLUTION MSC.141(76) (adopted on 5 December 2002) REVISED MODEL TEST METHOD UNDER RESOLUTION 14 OF THE 1995 SOLAS CONFERENCE

RESOLUTION MSC.141(76) (adopted on 5 December 2002) REVISED MODEL TEST METHOD UNDER RESOLUTION 14 OF THE 1995 SOLAS CONFERENCE MSC 76/23/Add.1 RESOLUTION MSC.141(76) THE MARITIME SAFETY COMMITTEE, RECALLING Article 38(c) of the Convention on the International Maritime Organization concerning the functions of the Committee, RECALLING

More information

for Naval Aircraft Operations

for Naval Aircraft Operations Seakeeping Assessment of Large Seakeeping Assessment of Large Trimaran Trimaran for Naval Aircraft Operations for Naval Aircraft Operations Presented by Mr. Boyden Williams, Mr. Lars Henriksen (Viking

More information

Minimising The Effects of Transom Geometry on Waterjet Propelled Craft Operating In The Displacement and Pre-Planing Regime

Minimising The Effects of Transom Geometry on Waterjet Propelled Craft Operating In The Displacement and Pre-Planing Regime Minimising The Effects of Transom Geometry on Waterjet Propelled Craft Operating In The Displacement and Pre-Planing Regime SUMMARY James Roy, Nigel Gee and Associates Ltd, UK John Bonafoux, Nigel Gee

More information

STABILITY OF MULTIHULLS Author: Jean Sans

STABILITY OF MULTIHULLS Author: Jean Sans STABILITY OF MULTIHULLS Author: Jean Sans (Translation of a paper dated 10/05/2006 by Simon Forbes) Introduction: The capsize of Multihulls requires a more exhaustive analysis than monohulls, even those

More information

Three New Concepts of Multi-Hulls

Three New Concepts of Multi-Hulls Three New Concepts of Multi-Hulls Victor A. Dubrovsky Independent designer, Russian Federation 114-71 Budapeshtskaja Str, St.Petersburg, 192283, Russian Federation Multi-hulls@yandex.ru Abstract Many multi-hull

More information

Comparative Stability Analysis of a Frigate According to the Different Navy Rules in Waves

Comparative Stability Analysis of a Frigate According to the Different Navy Rules in Waves Comparative Stability Analysis of a Frigate According to the Different Navy Rules in Waves ABSTRACT Emre Kahramano lu, Technical University, emrek@yildiz.edu.tr Hüseyin Y lmaz,, hyilmaz@yildiz.edu.tr Burak

More information

The salient features of the 27m Ocean Shuttle Catamaran Hull Designs

The salient features of the 27m Ocean Shuttle Catamaran Hull Designs The salient features of the 27m Ocean Shuttle Catamaran Hull Designs The hull form is a semi-planing type catamaran. It employs a combination of symmetrical and asymmetrical sponson shapes, thereby combining

More information

Shallow-Draft Ro-Pax Ships for Various Cargos and Short Lines

Shallow-Draft Ro-Pax Ships for Various Cargos and Short Lines Journal of Water Resources and Ocean Science 2017; 6(5): 65-70 http://www.sciencepublishinggroup.com/j/wros doi: 10.11648/j.wros.20170605.12 ISSN: 2328-7969 (Print); ISSN: 2328-7993 (Online) Shallow-Draft

More information

IMO REVISION OF THE INTACT STABILITY CODE. Proposal of methodology of direct assessment for stability under dead ship condition. Submitted by Japan

IMO REVISION OF THE INTACT STABILITY CODE. Proposal of methodology of direct assessment for stability under dead ship condition. Submitted by Japan INTERNATIONAL MARITIME ORGANIZATION E IMO SUB-COMMITTEE ON STABILITY AND LOAD LINES AND ON FISHING VESSELS SAFETY 49th session Agenda item 5 SLF 49/5/5 19 May 2006 Original: ENGLISH REVISION OF THE INTACT

More information

Stability Analysis of a Tricore

Stability Analysis of a Tricore Stability Analysis of a Tricore C. M. De Marco Muscat-Fenech, A.M. Grech La Rosa AbstractThe application of stability theory has led to detailed studies of different types of vessels; however, the shortage

More information

Long and flat or beamy and deep V-bottom An effective alternative to deep V-bottom

Long and flat or beamy and deep V-bottom An effective alternative to deep V-bottom Boat dual chines and a narrow planing bottom with low deadrise Long and flat or beamy and deep V-bottom An effective alternative to deep V-bottom Here is a ground-breaking powerboat concept with high efficiency

More information

Dynamic Stability of Ships in Waves

Dynamic Stability of Ships in Waves Gourlay, T.P. & Lilienthal, T. 2002 Dynamic stability of ships in waves. Proc. Pacific 2002 International Maritime Conference, Sydney, Jan 2002. ABSTRACT Dynamic Stability of Ships in Waves Tim Gourlay

More information

INCLINOMETER DEVICE FOR SHIP STABILITY EVALUATION

INCLINOMETER DEVICE FOR SHIP STABILITY EVALUATION Proceedings of COBEM 2009 Copyright 2009 by ABCM 20th International Congress of Mechanical Engineering November 15-20, 2009, Gramado, RS, Brazil INCLINOMETER DEVICE FOR SHIP STABILITY EVALUATION Helena

More information

Effect of Hull Form and its Associated Parameters on the Resistance of a Catamaran

Effect of Hull Form and its Associated Parameters on the Resistance of a Catamaran Effect of Hull Form and its Associated Parameters on the Resistance of a Catamaran Zulkarnain Bin Ramsani *1, Ivan CK Tam *2, and Arun Dev *3 *School of Marine Science and Technology, Newcastle University

More information

PERFORMANCE PREDICTION OF THE PLANING YACHT HULL

PERFORMANCE PREDICTION OF THE PLANING YACHT HULL PERFORMANCE PREDICTION OF THE PLANING YACHT HULL L A le Clercq and D A Hudson, University of Southampton, UK SUMMARY The performance of racing yachts has increased significantly over the past 10-15 years

More information

COMPARATIVE ANALYSIS OF CONVENTIONAL AND SWATH PASSENGER CATAMARAN

COMPARATIVE ANALYSIS OF CONVENTIONAL AND SWATH PASSENGER CATAMARAN COMPARATIVE ANALYSIS OF CONVENTIONAL AND SWATH PASSENGER CATAMARAN Serđo Kos, Ph. D. David Brčić, B. Sc. Vlado Frančić, M. Sc. University of Rijeka Faculty of Maritime Studies Studentska 2, HR 51000 Rijeka,

More information

SAMPLE MAT Proceedings of the 10th International Conference on Stability of Ships

SAMPLE MAT Proceedings of the 10th International Conference on Stability of Ships and Ocean Vehicles 1 Application of Dynamic V-Lines to Naval Vessels Matthew Heywood, BMT Defence Services Ltd, mheywood@bm tdsl.co.uk David Smith, UK Ministry of Defence, DESSESea-ShipStab1@mod.uk ABSTRACT

More information

Finding the hull form for given seakeeping characteristics

Finding the hull form for given seakeeping characteristics Finding the hull form for given seakeeping characteristics G.K. Kapsenberg MARIN, Wageningen, the Netherlands ABSTRACT: This paper presents a method to find a hull form that satisfies as good as possible

More information

S0300-A6-MAN-010 CHAPTER 2 STABILITY

S0300-A6-MAN-010 CHAPTER 2 STABILITY CHAPTER 2 STABILITY 2-1 INTRODUCTION This chapter discusses the stability of intact ships and how basic stability calculations are made. Definitions of the state of equilibrium and the quality of stability

More information

The Windward Performance of Yachts in Rough Water

The Windward Performance of Yachts in Rough Water 14th Chesapeake Sailing Yacht Symposium January 3, 1999 The Windward Performance of Yachts in Rough Water Jonathan R. Binns, Australian Maritime Engineering Cooperative Research Centre Ltd. (AME CRC) Bruce

More information

Vessel Modification and Hull Maintenance Considerations Options & Pay Back Period or Return On Investments

Vessel Modification and Hull Maintenance Considerations Options & Pay Back Period or Return On Investments Vessel Modification and Hull Maintenance Considerations Options & Pay Back Period or Return On Investments By Dag Friis Christian Knapp Bob McGrath Ocean Engineering Research Centre MUN Engineering 1 Overview:

More information

THE EFFECTS OF THE HULL VANE ON SHIP MOTIONS OF FERRIES AND ROPAX VESSELS

THE EFFECTS OF THE HULL VANE ON SHIP MOTIONS OF FERRIES AND ROPAX VESSELS THE EFFECTS OF THE HULL VANE ON SHIP MOTIONS OF FERRIES AND ROPAX VESSELS K Uithof, B Bouckaert, P G van Oossanen, and N Moerke, Hull Vane B.V., van Oossanen Naval Architecture, and van Oossanen Fluid

More information

Resistance Analysis for a Trimaran Claire M. De Marco Muscat-Fenech, Andrea M. Grech La Rosa

Resistance Analysis for a Trimaran Claire M. De Marco Muscat-Fenech, Andrea M. Grech La Rosa Resistance Analysis for a Trimaran Claire M. De Marco Muscat-Fenech, Andrea M. Grech La Rosa Abstract Importance has been given to resistance analysis for various types of vessels; however, explicit guidelines

More information

Hull Separation Optimization of Catamaran Unmanned Surface Vehicle Powered with Hydrogen Fuel Cell

Hull Separation Optimization of Catamaran Unmanned Surface Vehicle Powered with Hydrogen Fuel Cell Hull Separation Optimization of Catamaran Unmanned Surface Vehicle Powered with Hydrogen Fuel Cell Seok-In Sohn, Dae-Hwan Park, Yeon-Seung Lee, Il-Kwon Oh International Science Index, Physical and Mathematical

More information

3D CDF MODELING OF SHIP S HEELING MOMENT DUE TO LIQUID SLOSHING IN TANKS A CASE STUDY

3D CDF MODELING OF SHIP S HEELING MOMENT DUE TO LIQUID SLOSHING IN TANKS A CASE STUDY Journal of KONES Powertrain and Transport, Vol. 17, No. 4 21 3D CDF ODELING OF SHIP S HEELING OENT DUE TO LIQUID SLOSHING IN TANKS A CASE STUDY Przemysaw Krata, Jacek Jachowski Gdynia aritime University,

More information

Wind Turbine Shuttle. Ferdinand van Heerd

Wind Turbine Shuttle. Ferdinand van Heerd Wind Turbine Shuttle Ferdinand van Heerd Contents Introduction Concept Resistance Seakeeping Vessel motion compensation system Hoisting motion compensation system Landing the wind turbine Workability Efficiency

More information

AN INVESTIGATION INTO THE RESISTANCE/POWERING AND SEAKEEPING CHARACTERISTICS OF RIVER CATAMARAN AND TRIMARAN

AN INVESTIGATION INTO THE RESISTANCE/POWERING AND SEAKEEPING CHARACTERISTICS OF RIVER CATAMARAN AND TRIMARAN MAKARA,TEKNOLOGI, VOL. 15, NO. 1, APRIL 2011: 25-30 AN INVESTIGATION INTO THE RESISTANCE/POWERING AND SEAKEEPING CHARACTERISTICS OF RIVER CATAMARAN AND TRIMARAN Murdijanto 1, I Ketut Aria Pria Utama 1*),

More information

An Investigation into the Effect of Water Depth on the Resistance Components of Trimaran Configuration

An Investigation into the Effect of Water Depth on the Resistance Components of Trimaran Configuration An Investigation into the Effect of Water Depth on the Resistance Components of Trimaran Configuration Muhammad,IQBAL 1 and I Ketut Aria Pria, UTAMA 2 1 Department of Naval Architecture Diponegoro University,

More information

Reliable Speed Prediction: Propulsion Analysis and a Calculation Example

Reliable Speed Prediction: Propulsion Analysis and a Calculation Example Reliable Speed Prediction: Propulsion Analysis and a Calculation Example Donald M. MacPherson VP Technical Director HydroComp, Inc. ABSTRACT Speed prediction is more than just bare-hull resistance. Speed

More information

Deepwater Floating Production Systems An Overview

Deepwater Floating Production Systems An Overview Deepwater Floating Production Systems An Overview Introduction In addition to the mono hull, three floating structure designs Tension leg Platform (TLP), Semisubmersible (Semi), and Truss Spar have been

More information

Ocean Transits in a 50m, 45 knot Catamaran The Minimisation of Motions and Speed Loss

Ocean Transits in a 50m, 45 knot Catamaran The Minimisation of Motions and Speed Loss Ocean Transits in a 50m, 45 knot Catamaran The Minimisation of Motions and Speed Loss Edward Dudson, Ship Design Director, Nigel Gee and Associates Ltd, UK James Roy, Senior Naval Architect, Nigel Gee

More information

MISSION BASED HYDRODYNAMIC DESIGN OF A HYDROGRAPHIC SURVEY VESSEL

MISSION BASED HYDRODYNAMIC DESIGN OF A HYDROGRAPHIC SURVEY VESSEL MISSION BASED HYDRODYNAMIC DESIGN OF A HYDROGRAPHIC SURVEY VESSEL S.L. Toxopeus 1, P.F. van Terwisga 2 and C.H. Thill 1 1 Maritime Research Institute Netherlands (MARIN) Haagsteeg 2, Wageningen, NL 2 Royal

More information

IMO REVISION OF THE INTACT STABILITY CODE. Evaluation of the roll prediction method in the weather criterion. Submitted by the United Kingdom

IMO REVISION OF THE INTACT STABILITY CODE. Evaluation of the roll prediction method in the weather criterion. Submitted by the United Kingdom INTERNATIONAL MARITIME ORGANIZATION E IMO SUB-COMMITTEE ON STABILITY AND LOAD LINES AND ON FISHING VESSELS SAFETY 51st session Agenda item 4 SLF 51/INF.2 April 28 ENGLISH ONLY REVISION OF THE INTACT STABILITY

More information

Multihull Preliminary Stability Estimates are Fairly Accurate

Multihull Preliminary Stability Estimates are Fairly Accurate Multihull Design (Rev. A) 45 APPENDIX A ADDITIONAL NOTES ON MULTIHULL DESIGN MULTIHULL STABILITY NOTES Multihull stability is calculated using exactly the same method as described in Westlawn book 106,

More information

SHIP FORM DEFINITION The Shape of a Ship

SHIP FORM DEFINITION The Shape of a Ship SHIP FORM DEFINITION The Shape of a Ship The Traditional Way to Represent the Hull Form A ship's hull is a very complicated three dimensional shape. With few exceptions an equation cannot be written that

More information

Dynamic Performance of the National Technical University of Athens Double-chine Series Hull Forms in Random Waves

Dynamic Performance of the National Technical University of Athens Double-chine Series Hull Forms in Random Waves Journal of Ship Production and Design, Vol. 3, No. 2, May 214, pp. 1 8 http://dx.doi.org/1.5957/jspd.3.2.142 Dynamic Performance of the National Technical University of Athens Double-chine Series Hull

More information

Abstract. 1 Introduction

Abstract. 1 Introduction Developments in modelling ship rudder-propeller interaction A.F. Molland & S.R. Turnock Department of Ship Science, University of Southampton, Highfield, Southampton, S017 IBJ, Hampshire, UK Abstract A

More information

Design Aspects of a High Speed Monohull Ferry

Design Aspects of a High Speed Monohull Ferry Design Aspects of a High Speed Monohull Ferry Sefan Krüger 1, Adele Lübcke 1, Florian Kluwe 2 and Kay Martinsen 2 ABSTRACT The paper describes the design process of a high speed Monohull RoPax Ferry which

More information

Development of TEU Type Mega Container Carrier

Development of TEU Type Mega Container Carrier Development of 8 700 TEU Type Mega Container Carrier SAKAGUCHI Katsunori : P. E. Jp, Manager, Ship & Offshore Basic Design Department, IHI Marine United Inc. TOYODA Masanobu : P. E, Jp, Ship & Offshore

More information

Ship Stability September 2013 Myung-Il Roh Department of Naval Architecture and Ocean Engineering Seoul National University

Ship Stability September 2013 Myung-Il Roh Department of Naval Architecture and Ocean Engineering Seoul National University Planning Procedure of Naval Architecture and Ocean Engineering Ship Stability September 2013 Myung-Il Roh Department of Naval Architecture and Ocean Engineering Seoul National University 1 Ship Stability

More information

Scale effect on form drag of small waterplane area ships,withoval shape of gondola

Scale effect on form drag of small waterplane area ships,withoval shape of gondola The 14 th Marine Industries Conference (MIC2012) 26 & 27 December 2012 Tehran Scale effect on form drag of small waterplane area ships,withoval shape of gondola Mohammad rezaarabyar mohamadi 1,pouya molana

More information

IMO BULK CARRIER SAFETY. Bulk Carrier Model Test Progress Report. Submitted by the United Kingdom

IMO BULK CARRIER SAFETY. Bulk Carrier Model Test Progress Report. Submitted by the United Kingdom INERNAIONA MARIIME ORGANIZAION E IMO MARIIME SAFEY COMMIEE 75th session Agenda item 5 MSC 75/5/3 12 March 22 Original: ENGISH BUK CARRIER SAFEY Bulk Carrier Model est Progress Report Submitted by the United

More information

Conventional Ship Testing

Conventional Ship Testing Conventional Ship Testing Experimental Methods in Marine Hydrodynamics Lecture in week 34 Chapter 6 in the lecture notes 1 Conventional Ship Testing - Topics: Resistance tests Propeller open water tests

More information

Hydrodynamic optimization of twin-skeg LNG ships by CFD and model testing

Hydrodynamic optimization of twin-skeg LNG ships by CFD and model testing csnak, 2014 Int. J. Nav. Archit. Ocean Eng. (2014) 6:392~405 http://dx.doi.org/10.2478/ijnaoe-2013-0187 pissn: 2092-6782, eissn: 2092-6790 Hydrodynamic optimization of twin-skeg LNG ships by CFD and model

More information

COURSE OBJECTIVES CHAPTER 9

COURSE OBJECTIVES CHAPTER 9 COURSE OBJECTIVES CHAPTER 9 9. SHIP MANEUVERABILITY 1. Be qualitatively familiar with the 3 broad requirements for ship maneuverability: a. Controls fixed straightline stability b. Response c. Slow speed

More information

MODEL TESTS OF THE MOTIONS OF A CATAMARAN HULL IN WAVES

MODEL TESTS OF THE MOTIONS OF A CATAMARAN HULL IN WAVES MODEL TESTS OF THE MOTIONS OF A CATAMARAN HULL IN WAVES C. Guedes Soares 1 N. Fonseca P. Santos A. Marón 2 SUMMARY The paper describes the results of model tests of a catamaran in regular waves. The program

More information

The OTSS System for Drift and Response Prediction of Damaged Ships

The OTSS System for Drift and Response Prediction of Damaged Ships The OTSS System for Drift and Response Prediction of Damaged Ships Shoichi Hara 1, Kunihiro Hoshino 1,Kazuhiro Yukawa 1, Jun Hasegawa 1 Katsuji Tanizawa 1, Michio Ueno 1, Kenji Yamakawa 1 1 National Maritime

More information

Analysis of Factors Affecting Extreme Ship Motions in Following and Quartering Seas

Analysis of Factors Affecting Extreme Ship Motions in Following and Quartering Seas Analysis of Factors Affecting Extreme Ship Motions in Following and Quartering Seas Chang Seop Kwon *, Dong Jin Yeo **, Key Pyo Rhee *** and Sang Woong Yun *** Samsung Heavy Industries Co., td. * Maritime

More information

Proceedings of the 34 th International Conference on Ocean, Offshore and Arctic Engineering OMAE2015 May 31-June05, 2015, St.

Proceedings of the 34 th International Conference on Ocean, Offshore and Arctic Engineering OMAE2015 May 31-June05, 2015, St. Proceedings of the 34 th International Conference on Ocean, Offshore and Arctic Engineering OMAE2015 May 31-June05, 2015, St. Johns, Canada OMAE2015-41416 DESIGN ASPECTS OF A HIGH SPEED MONOHULL ROPAX

More information

Ship Resistance and Propulsion Prof. Dr. P. Krishnankutty Ocean Department Indian Institute of Technology, Madras

Ship Resistance and Propulsion Prof. Dr. P. Krishnankutty Ocean Department Indian Institute of Technology, Madras Ship Resistance and Propulsion Prof. Dr. P. Krishnankutty Ocean Department Indian Institute of Technology, Madras Lecture - 6 Bulbous Bow on Ship Resistance Welcome back to the class we have been discussing

More information

A Note on the Capsizing of Vessels in Following and Quartering Seas

A Note on the Capsizing of Vessels in Following and Quartering Seas Oceanic Engineenng International, Vol. 1, No. 1, 1997, pp. 25-32 A Note on the Capsizing of Vessels in Following and Quartering Seas MARTIN RENILSON' * 'Australian Maritime Engineering CRC Ltd, c/o Australian

More information

Crew Transfer Vessel (CTV) Performance Plot (P-Plot) Development

Crew Transfer Vessel (CTV) Performance Plot (P-Plot) Development Research Project Summary June 2017 Crew Transfer Vessel (CTV) Performance Plot (P-Plot) Development Notice to the Offshore Wind Energy Sector SUMMARY This R&D Summary describes the results of research

More information

MASTER THESIS PRESENTATION. Comparison Of Seakeeping Performance Of The Two Super Yachts Of 53 And 46 m In Length

MASTER THESIS PRESENTATION. Comparison Of Seakeeping Performance Of The Two Super Yachts Of 53 And 46 m In Length MASTER THESIS PRESENTATION Comparison Of Seakeeping Performance Of The Two Super Yachts Of 53 And 46 m In Length Muhammad Asim Saleem Supervisor : Prof. Dario Boote, Universita degli studi di Genova, Italy

More information

HULL VANE VERSUS LENGTHENING A comparison between four alternatives for a 61m OPV

HULL VANE VERSUS LENGTHENING A comparison between four alternatives for a 61m OPV HULL VANE VERSUS LENGTHENING A comparison between four alternatives for a 61m OPV N. Hagemeister (van Oossanen Fluid Dynamics), n.hagemeister@oossanen.nl K. Uithof (Hull Vane B.V.), k.uithof@hullvane.com

More information

A PROCEDURE FOR DETERMINING A GM LIMIT CURVE BASED ON AN ALTERNATIVE MODEL TEST AND NUMERICAL SIMULATIONS

A PROCEDURE FOR DETERMINING A GM LIMIT CURVE BASED ON AN ALTERNATIVE MODEL TEST AND NUMERICAL SIMULATIONS 10 th International Conference 181 A PROCEDURE FOR DETERMINING A GM LIMIT CURVE BASED ON AN ALTERNATIVE MODEL TEST AND NUMERICAL SIMULATIONS Adam Larsson, Det Norske Veritas Adam.Larsson@dnv.com Gustavo

More information

Experimental and Simulation Studies on Fast Delft372 Catamaran Maneuvering and Course Stability in Deep and Shallow Water

Experimental and Simulation Studies on Fast Delft372 Catamaran Maneuvering and Course Stability in Deep and Shallow Water 11 th International Conference on Fast Sea Transportation FAST 211, Honolulu, Hawaii, USA, September 211 Experimental and Simulation Studies on Fast Delft372 Catamaran Maneuvering and Course Stability

More information

MSC Guidelines for Review of Stability for Sailing Catamaran Small Passenger Vessels (T)

MSC Guidelines for Review of Stability for Sailing Catamaran Small Passenger Vessels (T) K.B. FERRIE, CDR, Chief, Hull Division References: a. 46 CFR Subchapter T, Parts 178, 179 b. 46 CFR Subchapter S, Parts 170, 171 c. Marine Safety Manual (MSM), Vol. IV d. Navigation and Vessel Circular

More information

International Journal of Engineering Research & Science (IJOER) ISSN: [ ] [Vol-2, Issue-7, July- 2016]

International Journal of Engineering Research & Science (IJOER) ISSN: [ ] [Vol-2, Issue-7, July- 2016] Experimental Investigation into the Resistance Components of Displacement Trimaran at Various Lateral Spacings Richard B Luhulima 1, I Ketut Aria Pria Utama 2, Aries Sulisetyono 3 1 Department of Naval

More information

PRELIMINARY DESIGN OF PROTOTYPE PASSENGER TRIMARAN FOR ISLANDS CONNECTION. Wolter R. Hetharia

PRELIMINARY DESIGN OF PROTOTYPE PASSENGER TRIMARAN FOR ISLANDS CONNECTION. Wolter R. Hetharia PRELIMINARY DESIGN OF PROTOTYPE PASSENGER TRIMARAN FOR ISLANDS CONNECTION Wolter R. Hetharia Department of Naval Architecture, Faculty of Engineering, Pattimura University Ambon, Mollucas, Indonesia. e-mail

More information

Jurnal Teknologi. Super Yatch Design Study for Malaysian Sea (Langkawi Island) Full paper

Jurnal Teknologi. Super Yatch Design Study for Malaysian Sea (Langkawi Island) Full paper Jurnal Teknologi Full paper Super Yatch Design Study for Malaysian Sea (Langkawi Island) Koh K. K. a*, Ibrahim M. I. H. M., Kader A. S. A., Agoes P., Rahimuddin, Arib M. N., Zan U. I., Lok K. B., Wira

More information

Part 3 Structures, equipment Chapter 1 Design principles, design loads

Part 3 Structures, equipment Chapter 1 Design principles, design loads RULES FOR CLASSIFICATION High speed and light craft Edition December 2015 Part 3 Structures, equipment Chapter 1 The content of this service document is the subject of intellectual property rights reserved

More information

Figure 1 Figure 1 shows the involved forces that must be taken into consideration for rudder design. Among the most widely known profiles, the most su

Figure 1 Figure 1 shows the involved forces that must be taken into consideration for rudder design. Among the most widely known profiles, the most su THE RUDDER starting from the requirements supplied by the customer, the designer must obtain the rudder's characteristics that satisfy such requirements. Subsequently, from such characteristics he must

More information

The Roll Motion of Trimaran Ships

The Roll Motion of Trimaran Ships 1 The Roll Motion of Trimaran Ships By Thomas James Grafton A Thesis Submitted fora Doctor of Philosophy Department of Mechanical Engineering University College London 2007 UMI Number: U593304 All rights

More information

Voith Water Tractor Improved Manoeuvrability and Seakeeping Behaviour

Voith Water Tractor Improved Manoeuvrability and Seakeeping Behaviour Amsterdam, The Netherlands Organised by the ABR Company Ltd Day Paper No. 2 9 Voith Water Tractor Improved Manoeuvrability and Seakeeping Behaviour Dr Dirk Jürgens and Michael Palm, Voith Turbo Schneider

More information

WIND-INDUCED LOADS OVER DOUBLE CANTILEVER BRIDGES UNDER CONSTRUCTION

WIND-INDUCED LOADS OVER DOUBLE CANTILEVER BRIDGES UNDER CONSTRUCTION WIND-INDUCED LOADS OVER DOUBLE CANTILEVER BRIDGES UNDER CONSTRUCTION S. Pindado, J. Meseguer, J. M. Perales, A. Sanz-Andres and A. Martinez Key words: Wind loads, bridge construction, yawing moment. Abstract.

More information

DYNAMIC STALL AND CAVITATION OF STABILISER FINS AND THEIR INFLUENCE ON THE SHIP BEHAVIOUR

DYNAMIC STALL AND CAVITATION OF STABILISER FINS AND THEIR INFLUENCE ON THE SHIP BEHAVIOUR DYNAMIC STALL AND CAVITATION OF STABILISER FINS AND THEIR INFLUENCE ON THE SHIP BEHAVIOUR Guilhem Gaillarde, Maritime Research Institute Netherlands (MARIN), the Netherlands SUMMARY The lifting characteristics

More information

RESOLUTION MSC.235(82) (adopted on 1 December 2006) ADOPTION OF THE GUIDELINES FOR THE DESIGN AND CONSTRUCTION OF OFFSHORE SUPPLY VESSELS, 2006

RESOLUTION MSC.235(82) (adopted on 1 December 2006) ADOPTION OF THE GUIDELINES FOR THE DESIGN AND CONSTRUCTION OF OFFSHORE SUPPLY VESSELS, 2006 MSC 82/24/Add.2 RESOLUTION MSC.235(82) CONSTRUCTION OF OFFSHORE SUPPLY VESSELS, 2006 THE MARITIME SAFETY COMMITTEE, RECALLING Article 28(b) of the Convention on the International Maritime Organization

More information

DP Ice Model Test of Arctic Drillship

DP Ice Model Test of Arctic Drillship Author s Name Name of the Paper Session DYNAMIC POSITIONING CONFERENCE October 11-12, 211 ICE TESTING SESSION DP Ice Model Test of Arctic Drillship Torbjørn Hals Kongsberg Maritime, Kongsberg, Norway Fredrik

More information

MSC Guidelines for the Submission of Stability Test (Deadweight Survey or Inclining Experiment) Results

MSC Guidelines for the Submission of Stability Test (Deadweight Survey or Inclining Experiment) Results S. E. HEMANN, CDR, Chief, Hull Division References a. 46 CFR 170, Subpart F Determination of Lightweight Displacement and Centers of Gravity b. NVIC 17-91 Guidelines for Conducting Stability Tests c. ASTM

More information

Comparative Hydrodynamic Testing of Small Scale Models

Comparative Hydrodynamic Testing of Small Scale Models University of New Orleans ScholarWorks@UNO University of New Orleans Theses and Dissertations Dissertations and Theses 12-19-2008 Comparative Hydrodynamic Testing of Small Scale Models Jared Acosta University

More information

Semi-Submersible Offshore Platform Simulation Using ANSA & META

Semi-Submersible Offshore Platform Simulation Using ANSA & META Semi-Submersible Offshore Platform Simulation Using ANSA & META Offshore platforms are large structures designed to withstand extreme weather conditions and have a lifespan of at least 40 years. Million

More information

MSC Guidelines for the Review of OSV Stability

MSC Guidelines for the Review of OSV Stability MSC Guidelines for the Review of OSV Stability Procedure Number: C1-06 Revision Date: February 13, 2013 R. J. LECHNER, CDR, Tank Vessel and Offshore Division Purpose To establish a procedure for reviewing

More information

AN INVESTIGATION INTO THE INFLUENCE OF TANK FILLING LEVEL ON LIQUID SLOSHING EFFECTS ONBOARD SHIPS - STATIC AND DYNAMIC APPROACH

AN INVESTIGATION INTO THE INFLUENCE OF TANK FILLING LEVEL ON LIQUID SLOSHING EFFECTS ONBOARD SHIPS - STATIC AND DYNAMIC APPROACH Journal of KONES Powertrain and Transport, Vol. 9, No. AN INVESTIGATION INTO THE INFLUENCE OF TANK FILLING LEVEL ON LIQUID SLOSHING EFFECTS ONBOARD SHIPS - STATIC AND DYNAMIC APPROACH Przemys aw Krata,

More information

An Investigation into the Capsizing Accident of a Pusher Tug Boat

An Investigation into the Capsizing Accident of a Pusher Tug Boat An Investigation into the Capsizing Accident of a Pusher Tug Boat Harukuni Taguchi, National Maritime Research Institute (NMRI) taguchi@nmri.go.jp Tomihiro Haraguchi, National Maritime Research Institute

More information

EN400 LAB #2 PRELAB. ARCHIMEDES & CENTER of FLOTATION

EN400 LAB #2 PRELAB. ARCHIMEDES & CENTER of FLOTATION EN400 LAB #2 PRELAB ARCHIMEDES & CENTER of FLOTATION Instructions: 1. The prelab covers theories that will be examined experimentally in this lab. 2. The prelab is to be completed and handed in to your

More information

Landing Craft - Choosing the Right Tool for the Job

Landing Craft - Choosing the Right Tool for the Job Landing Craft - Choosing the Right Tool for the Job ABSTRACT Nick Johnson, Jeremy Atkins BMT Defence Services, UK NJohnson@bmtdsl.co.uk Far from being simple ships [Ref 1] the design of landing craft poses

More information

EVALUATING CRITERIA FOR DP VESSELS

EVALUATING CRITERIA FOR DP VESSELS Journal of KONES Powertrain and Transport, Vol. 20, No. 2013 EVALUATING CRITERIA FOR DP VESSELS Jerzy Herdzik Gdynia Maritime University, Marine Power Plant Department Morska Street 81-87, 81-225 Gdynia,

More information

Trim and Stabilisation systems NEXT GENERATION IN BOAT CONTROL.

Trim and Stabilisation systems NEXT GENERATION IN BOAT CONTROL. Trim and Stabilisation systems NEXT GENERATION IN BOAT CONTROL www.humphree.com WHEN EFFICIENCY AND PERFORMANCE REALLY MATTERS! Humphree proudly presents the new HCS-5 The HCS-5 combines exceptional mechanical

More information

Experimental Investigation of the Effect of Waves and Ventilation on Thruster Loadings

Experimental Investigation of the Effect of Waves and Ventilation on Thruster Loadings First International Symposium on Marine Propulsors SMP 9, Trondheim, Norway, June 29 Experimental Investigation of the Effect of Waves and Ventilation on Thruster Loadings Kourosh Koushan; Silas J. B.

More information

Numerical Estimation of Shallow Water Resistance of a River-Sea Ship using CFD

Numerical Estimation of Shallow Water Resistance of a River-Sea Ship using CFD Numerical Estimation of Shallow Water Resistance of a River-Sea Ship using CFD Senthil Prakash M.N,Ph.D Associate Professor Department of Mechanical Engineering,CUSAT CUCEK, Alappuzha-688504, India Binod

More information

Dynamic Component of Ship s Heeling Moment due to Sloshing vs. IMO IS-Code Recommendations

Dynamic Component of Ship s Heeling Moment due to Sloshing vs. IMO IS-Code Recommendations International Journal on Marine Navigation and Safety of Sea Transportation Volume 4 Number 3 September 2010 Dynamic Component of Ship s Heeling Moment due to Sloshing vs. IMO IS-Code Recommendations P.

More information

A STUDY ON FACTORS RELATED TO THE CAPSIZING ACCIDENT OF A FISHING VESSEL RYUHO MARU No.5

A STUDY ON FACTORS RELATED TO THE CAPSIZING ACCIDENT OF A FISHING VESSEL RYUHO MARU No.5 8 th International Conference on 49 A STUDY ON FACTORS RELATED TO THE CAPSIZING ACCIDENT OF A FISHING VESSEL RYUHO MARU No.5 Harukuni Taguchi, Shigesuke Ishida, Iwao Watanabe, Hiroshi Sawada, Masaru Tsujimoto,

More information

CFD Investigation of Resistance of High-Speed Trimaran Hull Forms

CFD Investigation of Resistance of High-Speed Trimaran Hull Forms CFD Investigation of Resistance of High-Speed Trimaran Hull Forms By Chang Hwan Son Bachelor of Engineering University of Ulsan in South Korea 2001 Thesis submitted to The College of Engineering at Florida

More information

Modelling of Extreme Waves Related to Stability Research

Modelling of Extreme Waves Related to Stability Research Modelling of Extreme Waves Related to Stability Research Janou Hennig 1 and Frans van Walree 1 1. Maritime Research Institute Netherlands,(MARIN), Wageningen, the Netherlands Abstract: The paper deals

More information

THE USE OF ENERGY BUILD UP TO IDENTIFY THE MOST CRITICAL HEELING AXIS DIRECTION FOR STABILITY CALCULATIONS FOR FLOATING OFFSHORE STRUCTURES

THE USE OF ENERGY BUILD UP TO IDENTIFY THE MOST CRITICAL HEELING AXIS DIRECTION FOR STABILITY CALCULATIONS FOR FLOATING OFFSHORE STRUCTURES 10 th International Conference 65 THE USE OF ENERGY BUILD UP TO IDENTIFY THE MOST CRITICAL HEELING AXIS DIRECTION FOR STABILITY CALCULATIONS FOR FLOATING OFFSHORE STRUCTURES Joost van Santen, GustoMSC,

More information

Rules for Classification and Construction Additional Rules and Guidelines

Rules for Classification and Construction Additional Rules and Guidelines VI Rules for Classification and Construction Additional Rules and Guidelines 11 Other Operations and Systems 6 Guidelines for the Preparation of Damage Stability Calculations and Damage Control Documentation

More information

DESIGN PRINCIPLES, DESIGN LOADS

DESIGN PRINCIPLES, DESIGN LOADS RUES FOR CASSIFICATION OF HIGH SPEED, IGHT CRAFT AND NAVA SURFACE CRAFT STRUCTURES, EQUIPMENT PART 3 CHAPTER 1 DESIGN PRINCIPES, DESIGN OADS JANUARY 2005 CONTENTS PAGE Sec. 1 Design Principles... 5 Sec.

More information

DUKC DYNAMIC UNDER KEEL CLEARANCE

DUKC DYNAMIC UNDER KEEL CLEARANCE DUKC DYNAMIC UNDER KEEL CLEARANCE Information Booklet Prepared in association with Marine Services Department 10/10/2005 Dynamic Under Keel Clearance (DUKC) integrates real time measurement of tides and

More information

High Speed Connector. LT Fragiskos Zouridakis, HN LT Daniel Wang, USN

High Speed Connector. LT Fragiskos Zouridakis, HN LT Daniel Wang, USN High Speed Connector LT Fragiskos Zouridakis, HN LT Daniel Wang, USN 1 Initial Requirement Part of System of Systems Intra-theater Connector within the Sea Basing Concept High Speed, Agile, Versatile Platform

More information

RULES FOR CLASSIFICATION. Ships. Part 3 Hull Chapter 15 Stability. Edition July 2016 Amended January 2017 DNV GL AS

RULES FOR CLASSIFICATION. Ships. Part 3 Hull Chapter 15 Stability. Edition July 2016 Amended January 2017 DNV GL AS RULES FOR CLASSIFICATION Ships Edition July 2016 Amended January 2017 Part 3 Hull Chapter 15 The content of this service document is the subject of intellectual property rights reserved by ("DNV GL").

More information

ITTC Recommended Procedures Testing and Extrapolation Methods Manoeuvrability Free-Sailing Model Test Procedure

ITTC Recommended Procedures Testing and Extrapolation Methods Manoeuvrability Free-Sailing Model Test Procedure Testing and Extrapolation Methods Free-Sailing Model Test Procedure Page 1 of 10 22 CONTENTS 1. PURPOSE OF PROCEDURE 2. DESCRIPTION OF PROCEDURE 2.1 Preparation 2.1.1 Ship model characteristics 2.1.2 Model

More information

Investigation into Wave Loads and Catamarans

Investigation into Wave Loads and Catamarans SUMMARY Investigation into Wave Loads and Catamarans Stephen M. Cook, AME CRC, Curtin University Patrick Couser, AME CRC.* Kim Klaka, AME CRC, Centre for Marine Science & Technology, Curtin University.

More information

Shear Strength Assessment of Ship Hulls Alice Mathai, Alice T.V., Ancy Joseph

Shear Strength Assessment of Ship Hulls Alice Mathai, Alice T.V., Ancy Joseph Shear Strength Assessment of Ship Hulls Alice Mathai, Alice T.V., Ancy Joseph Abstract The primary aim of the study is to investigate the ultimate strength characteristics of ship hulls with large hatch

More information

CFD Analysis for a Ballast Free Ship Design

CFD Analysis for a Ballast Free Ship Design Indian Journal of Geo-Marine Sciences Vol. 43(11), November 2014, pp. 2053-2059 CFD Analysis for a Ballast Free Ship Design Avinash Godey 1*, S.C.Misra 1 and O.P.Sha 2 1 Indian Maritime University (Visakhapatnam

More information

THE EFFECT OF COUPLED HEAVE/HEAVE VELOCITY OR SWAY/SWAY VELOCITY INITIAL CONDITIONS ON CAPSIZE MODELING

THE EFFECT OF COUPLED HEAVE/HEAVE VELOCITY OR SWAY/SWAY VELOCITY INITIAL CONDITIONS ON CAPSIZE MODELING 8 th International Conference on 521 THE EFFECT OF COUPLED HEAVE/HEAVE VELOCITY OR SWAY/SWAY VELOCITY INITIAL CONDITIONS ON CAPSIZE MODELING Leigh S. McCue and Armin W. Troesch Department of Naval Architecture

More information

WATERTIGHT INTEGRITY. Ship is divided into watertight compartments by means of transverse and longitudinal bulkheads bulkheads.

WATERTIGHT INTEGRITY. Ship is divided into watertight compartments by means of transverse and longitudinal bulkheads bulkheads. Damage Stability WATERTIGHT INTEGRITY Ship is divided into watertight compartments by means of transverse and longitudinal bulkheads bulkheads. When a watertight compartment (or a group of compartments)

More information

Part 5: Mooring forces and vessel behaviour in locks Experience in Belgium. Mooring forces and vessel behaviour in locks:

Part 5: Mooring forces and vessel behaviour in locks Experience in Belgium. Mooring forces and vessel behaviour in locks: PIANC Workshop 13-14th 14th September 211 Part 5: Mooring forces and vessel behaviour in locks Experience in Belgium By T. DE MULDER & M. VANTORRE BELGIUM Mooring forces and vessel behaviour in locks:

More information

HYDRODYNAMICS OF A SHIP WHILE ENTERING A LOCK

HYDRODYNAMICS OF A SHIP WHILE ENTERING A LOCK HYDRODYNAMICS OF A SHIP WHILE ENTERING A LOCK T A Vergote, Dredging International, Belgium K Eloot, Flanders Hydraulics Research, Belgium & Maritime Technology Division, EA15, Ghent University, Belgium,

More information

1. A tendency to roll or heel when turning (a known and typically constant disturbance) 2. Motion induced by surface waves of certain frequencies.

1. A tendency to roll or heel when turning (a known and typically constant disturbance) 2. Motion induced by surface waves of certain frequencies. Department of Mechanical Engineering Massachusetts Institute of Technology 2.14 Analysis and Design of Feedback Control Systems Fall 2004 October 21, 2004 Case Study on Ship Roll Control Problem Statement:

More information

RIGID RISERS FOR TANKER FPSOs

RIGID RISERS FOR TANKER FPSOs RIGID RISERS FOR TANKER FPSOs Stephen A. Hatton 2H Offshore Engineering Ltd. SUMMARY Recent development work on the subject of dynamic rigid (steel pipe) risers demonstrates that their scope of application

More information