DESIGN CONSIDERATIONS FOR STABILITY OF DRILL SHIPS
When stability is neglected as a serious constraint in the preliminary and contract design of drill ships, the possible inadequacies in the intact and damaged stability are not recognized till relevant calculations have to be submitted to classification societies, or governmental agencies. Usually, this occurs when a ship is nearly complete and ready for delivery. Invariably, solutions to stability problems at this state are costly. They can involve expensive modifications to the ship and/or reduced operating KG. Principal dimensions of the ship, arrangements and outboard profiles, must be chosen with stability as one of the major considerations. A parametric analysis is presented to exhibit the influence of the variation of beam and depth of ships from 250 feet to 600 feet on the allowable maximum KG and the range of righting moment curves. Stability considerations related to arrangements and outboard profiles are also treated.
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Supplemental Notes:
- Presented at the Eighth Annual Offshore Technology Conference, Houston, Texas, May 3-6, 1976.
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Corporate Authors:
Offshore Technology Conference
6200 North Central Expressway
Dallas, TX United States 45206 -
Authors:
- Daidola, J C
- Maniar, N M
- Conference:
- Publication Date: 1976-5
Media Info
- Features: References;
- Pagination: p. 873-888
Subject/Index Terms
- TRT Terms: Drilling ships; Mechanical stability; Ship motion; Stability analysis
- Uncontrolled Terms: Ship design
- Old TRIS Terms: Ship stability
- Subject Areas: Marine Transportation; Safety and Human Factors;
Filing Info
- Accession Number: 00138200
- Record Type: Publication
- Source Agency: Offshore Technology Conference
- Report/Paper Numbers: V1, OTC 2507 Proceeding
- Files: TRIS
- Created Date: Aug 23 1976 12:00AM