COMPUTATION OF THE CAPSIZING PROBABILITY OF DAMAGED SHIPS IN A SEAWAY

A numerical method for simulating the motions of a damaged ship in an irregular seaway and for computing the capsizing probability during a given time is presented. During the simulation time the ship's position is advanced in small increments. At each time step the forces due to liquid motion inside the ship are added to other external forces (such as wave exciting forces, wind forces, etc.), so that a complete time domain solution (taking into account the flow through orifices in the ship hull) for both ship motion and internal fluid motion is obtained. Computations carried out for an example ship show that the internal fluid acts as a very effective roll damping mechanism, so that a damaged ship with a very reduced righting arm curve can be safe even in extremely severe seaways.

• Supplemental Notes:
  • Schiffstechnik, 35 (1988), p. 155 (Nov.) [18 pp., 13 ref., 7 tab., 6 fig.]
• Authors:
  • Petey, F
• Publication Date: 1988

Language

• German

Subject/Index Terms

• TRT Terms: Capsizing
• Old TRIS Terms: Damage stability; Roll damping
• Subject Areas: Marine Transportation; Safety and Human Factors;

Filing Info

• Accession Number: 00694813
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM