THE TRANSIENT CAPSIZE DIAGRAM - A ROUTE TO SOUNDLY-BASED NEW STABILITY REGULATIONS
Recent developments in the theory of non-linear dynamics and chaos promise a breakthrough in the description of ship "capsizability". They suggest that ship behaviour in transient conditions offers a highly repeatable index of "capsizability", which is quick and simple to establish by physical model tests or (in principle) computer simulation. This index is the Transient Capsize Diagram. Using it, it should be possible, with the aid of suitable physical model tests and computer simulations, to resolve longstanding arguments about the allowance which existing regulations should make for roll damping, and for KG/draught ratio. For particularly critical vessels, where the cost of the model tests can be justified, the Diagram itself could be used as the basis of stability regulation, and as an operational aid. Looking further ahead, recent developments in computer simulation of vessel motions may allow the Diagram to be calculated with satisfactory accuracy during the design stage, which would greatly enhance its practicability as a regulatory tool.
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Supplemental Notes:
- STAB 90, Stability of Ships & Ocean Vehicles; 4th Intl Conf; 24-28 Sept 1990; Naples, Italy. Sponsored & Publ by Dept Naval Engng, Univ Naples et al. Procs, v 2, p 613 [7 p, 20 ref, 3 fig]
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Authors:
- Rainey, R C
- Thompson, J M
- Publication Date: 1990
Language
- English
Subject/Index Terms
- TRT Terms: Capsizing; Simulation; Stability (Mechanics)
- Subject Areas: Marine Transportation; Safety and Human Factors;
Filing Info
- Accession Number: 00701251
- Record Type: Publication
- Source Agency: British Maritime Technology
- Files: TRIS
- Created Date: Aug 14 1995 12:00AM