Recent developments in the design of fast ships
During the last twenty years, Damen Shipyards, a multinational shipbuilding group with 6000 employees worldwide, has done extensive research on the development of hull designs for fast monohull vessels. In the 1990s the Enlarged Ship Concept was developed, leading to highly improved sea keeping capabilities and vessel behaviour in waves at high speed. This hull design concept was applied in the Damen SPa 4207 patrol vessel and has proven extremely successful, reducing vertical accelerations by 50% and, thus, allowing vessels to keep operating at high speed in waves. Over 25 units of the Damen SPa 4207 have been delivered so far. After the successful introduction of the Enlarged Ship Concept, Damen and Delft University continued developing the next generation hull form: the axebow design. Compared to the already good sea keeping capacities of the Enlarged Ship Concept, model tests indicated a further reduction of vertical accelerations. This was proven by real-time measurements on the first built axebow vessels in 2006 and 2007. In the last 3 years, over 30 axe bow supply vessels have been delivered to very satisfied operators. As a next step, Damen has applied the axe bow design to the latest patrol vessel design, the Damen SPa 5009. The first vessel of this design is currently under construction and its trials are scheduled by the end of 2011. The paper describes the background of the research done by Damen and Delft University, focusing on the mathematical and scientific aspects of the axebow design and its application on various ship types. The development and design of the latest Damen patrol vessel, SPa 5009, will be introduced, describing its seakeeping performance, operatability and crew ergonomics. Finally, the paper will mention the current and future research topics that Damen and Delft University are working on together, identifying the developments of the future generation patrol vessels.
BOSCH, J.J. VAN DEN “Tests with two planing boats in waves” TU Delft Laboratorium voor Scheepsbouwkunde, Report 238, June 1969.
BLOK, J.J. AND ROELOFFS, H.W. ‘The influence of the Forebody Deadrise on the performance in a Seaway” MARIN Report No 49207-1-HT April 1989.
KEUNING, J.A. “Nonlinear Heave and Pitch Motions of Fast Ships in Irregular Head Waves” ASNE High Speed Marine Vehicles Conference, Washington, June 1992.
KEUNING, J.A. “The Non Linear Behavior of Fast Monohulls in Head Waves” PhD Thesis, Delft University of Technology, September 1994.
GELLING, J.L. AND KEUNING, J.A. “Developments in hullshapes for high speed craft” IPIN Conference 2007, Cartagena, Colombia.
KEUNING, J.A. AND PINKSTER, J. “Further Design and Seakeeping Investigations into the Enlarged Ship Concept” FAST Conference Proceedings 1997, Sydney Australia.
KEUNING, J.A., PINKSTER, J. AND WALREE, F. VAN “Further Investigation into the Hydrodynamic Performance of the AXE Bow Concept” Proceedings of the WEGEMT Conference on High Performance Marine Vehicles September 2002 Ischia, Italy.
KEUNING, J.A., TOXOPEUS, S. AND PINKSTER, J. “The Effect of Bow Shape on the Seakeeping Performance of a Fast Monohull” FAST Conference Proceedings Southampton, September 2001.
[ 9] OOMS, J AND KEUNING, J.A. “Comparitive Full Scale Trials of Two Fast Rescue Vessels” International Conference SURV 4, 13&14 may 1997 Gothenburg.
KEUNING, J A AND VISCH, G. The Application of a Vertical Bow Rotor on an AXE Bow FAST Conference Athens, Greece 2009.
Copyright (c) 2011 Ciencia y tecnología de buques
This work is licensed under a Creative Commons Attribution 4.0 International License.
The authors who publish in this Journal certify that:
- The work submitted for publication in The Ship Science and Technology journal, was written by the author, given that its content is the product of his/her direct intellectual contribution.
- All data and references to material already published are duly identified with their respective credits and are included in the bibliographic notes and quotations highlighted as such.
- All materials submitted for publication are completely free of copyrights; consequently, the author accepts responsibility for any lawsuit or claim related with Intellectual Property Rights thereof, Exonerating of responsibility to The Science and Technology for the Development of Naval, Maritime, and Riverine Industry Corporation, COTECMAR.
- In the event that the article is chosen for publication by The Ship Science and Technology journal, the author state that he/she totally transfers reproduction rights of such to The Science and Technology for the Development of Naval, Maritime, and Riverine Industry Corporation, COTECMAR.
- The authors retain the copyright and transfer to COTECMAR the right of publication and reproduction of the work which will be simultaneously subject to the Creative Commons Attribution License (CC -BY) , which allows the license to copy, distribute, display and represent the work and to make derivative works as long as it recognizes and cites the work in the manner specified by the author or licensor.
- For more information about the Creative Commons Attribution License (CC -BY) and his use and scope, please visit the following web page https://creativecommons.org/licenses/by-sa/4.0/legalcode