Capsizing of ships : static and dynamic analysis of wind effect and cost implications

Capsizing of small vessels, such as commercial fishing vessels, is a frequent event. This phenomenon is generally associated with the combined action of storm seas, inadequate design parameter regulations, and dangerous operational procedures. In contrast, the capsizing of large ships is rare, but does occur. For these large vessels, more strict regulations exist to ensure safe operational procedures. While the storminess of the sea cannot be controlled, the navigation procedure can. Large offshore ships tend to navigate in a path to avoid forecasted severe weather, and in cases of stormy seas they temporarily operate at safe speeds and in the direction parallel to the waves. The work presented in this thesis investigates the effect of the wind in rolling and finally capsizing a ship. For the purposes of mechanical analysis, realistic hull forms are used and fundamental issues associated with moments and forces imposed by the wind, are applied. The platforms are examined for several wind speeds that strike the ship at different angles. Both static and dynamic cases were examined. Under the assumption of general conditions, the angles of heeling in each case and the wind speeds that caused the ship to capsize are calculated.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Mechanical Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2006

Author dc:creator

• Antonopoulos, Angelos, Nav. E. Massachusetts Institute of Technology

Advisor dc:contributor.advisor

• Jerome H. Milgram, Patrick J. Keenan and Henry S. Marcus.

• Mechanical Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/36198

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/36198