Vertical plane response of a ship on irregular seas

Authors

  • Diana Ramírez Corporación de Ciencia y Tecnología para el Desarrollo de la Industria Naval, Marítima y Fluvial COTECMAR.
  • Iván Altamar Corporación de Ciencia y Tecnología para el Desarrollo de la Industria Naval, Marítima y Fluvial COTECMAR
  • Marcelo Cali Corporación de Ciencia y Tecnología para el Desarrollo de la Industria Naval, Marítima y Fluvial COTECMAR.

DOI:

https://doi.org/10.25043/19098642.75

Keywords:

seakeeping, irregular sea, coastguard patrol, SCORES, RMS

Abstract

This work presents the study of the sea response on the vertical plane for a 40-m length overall coastal patrol vessel (CPV-40) of Colombia’s National Navy. The condition studied is at full load and at patrol and maximum speeds. First, we analyzed the response for regular waves with incidence angles of 90º, 120º, 150º, and 180º, obtaining the response for heave and pitch motions through the SCORES program that uses the method called “girdle theory”. From the response, it was verifiedthat the amplitudeof the response is proportional to the amplitudeof the incident wave. Thereafter, the calculation of the vertical acceleration was made for four ship positions: bow, stern, cabin, and bridge, with the greatest vertical accelerations on the bow. Finally,the study was conducted for irregular sea considering as measuring parameters the vertical acceleration on the bridge and the pitching angle for the patrol operation, from the NATO document, compliance was verified of the study parameters at RMS level. It was found that for this condition the vessel complies and, hence, the personnel will not be affected in the performance of their functions.

Downloads

Download data is not yet available.

References

NATO, North Atlantic Treaty Organization, December, Military agency for standardization 2000.

LEWIS E. Principles of Naval Architecture. Volume III. Motions in waves and Controllability. ISBN 0-939773-02-3. November, 1989.

Downloads

Published

2013-01-23

How to Cite

Ramírez, D., Altamar, I., & Cali, M. (2013). Vertical plane response of a ship on irregular seas. Ship Science & Technology, 6(12), 23–28. https://doi.org/10.25043/19098642.75

Issue

Vol. 6 No. 12

Section

Scientific and Technological Research Articles

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
QR Code