SHIP MOTIONS AND CAPSIZING IN ASTERN SEAS
An analytical and experimental study of ship motions and capsizing in extreme seas has been conducted. The analysis of linear and quasi-linear one-dimensional roll models has revealed motion anomalies not apparent from the usual linearized ship motion theory. Extensive tests have been conducted using two radio-controlled models in the wind generated seas of San Francisco Bay. Directional Spectra were computed, using a variety of techniques, from the wave measurements by an array of wave gages. Comparisons of the experimentally determined motions and a linear strip theory prediction are presented. A time domain numerical simulation program for motions and capsizing has been used to investigate motions in a variety of wave group configurations. The results show good agreement with observed capsizing phenomena and have revealed a number of important characteristics associated with large geometry changes in waves.
University of California, BerkeleyInstitute of Transportation Studies Library
Berkeley, CA United States 94720
- Chou, S J
- Oakley Jr, O H
- Paulling, J R
- Van Slyke, R
- Wood, P D
- Publication Date: 1974-12
- Pagination: 341 p.
- TRT Terms: Capsizing; Rolling; Ship motion; Waves
- Old TRIS Terms: Roll amplitude; Wave effects
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00127444
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: USCG-D-103-75 Final Rpt.
- Contract Numbers: DOT-CG-84549-A
- Files: TRIS
- Created Date: Nov 18 1975 12:00AM