AN EVALUATION OF INTACT STABILITY CRITERIA

A review is made of the development of damage stability criteria over the last 25 years. In 1952 there were only two standards for intact stability: the wind-heel and passenger-heel criteria of the U.S. Coast Guard. The former established unit wind pressure for various locations and the latter called for all passengers to be placed so that their weight centre was 1/6 of the beam from the ship centreline. After World War I the prime emphasis of the (U.S.) Navy in assessing the stability of ships was on their ability to resist flooding in case of damage. It was not until 1975 that the criteria were formalised in Navy Design Data Sheet, DSS 079-1, which embraced the investigation of heel in high-speed turns, heel caused by lifting weights on and off, and heel due to passengers and crew shifting to one side of the vessel; this work was based on work done by a Frenchman at the turn of the century. Experience and casualty records seem to indicate that the U.S. Coast Guard windheel and passenger-heel criteria are now adequate to ensure stability in large vessels that comply with them.

• Supplemental Notes:
  • Presented by the Pacific Northwest Section of SNAME, March 5, 1977.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Nickum, G C
• Publication Date: 1977

Media Info

• Pagination: 17 p.

Subject/Index Terms

• TRT Terms: Heeling; Ship motion; Stability (Mechanics)
• Old TRIS Terms: Damage stability; Heel angle; Intact stability; Ship stability
• Subject Areas: Marine Transportation; Safety and Human Factors;

Filing Info

• Accession Number: 00170899
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Mar 14 1978 12:00AM