NONLINEAR DYNAMICS AND CAPSIZING OF SMALL FISHING VESSELS

In this paper, modern methods of dynamical systems analysis are used to evaluate the increased risk of capsize for small native American fishing boats operating trap-nets in the Great Lakes. These trap-nets are being evaluated as replacements for the traditional gill-net. In the analysis, geometric methods and Melnikov functions are extended to random excitation and applied to the study of large amplitude rolling motion leading to capsizing in real beam seas. With no restriction on the restoring force, the rolling motion is studies as a highly nonlinear dynamic problem. The probability of capsizing and the effect of trap-net induced mean heel angles are estimated by calculating the rate of phase flux. The theoretical results are supported by simulations using random excitation.

  • Supplemental Notes:
    • STAB 94, 5th Intl Conf on Stability of Ships and Ocean Vehicles; 7-11 Nov 1994; Florida, USA. Sponsored by SNAME, USA and RINA, UK. Procs. Publ by Florida Inst Technology, USA. Vol 3, session 12 [18 p, 20 ref, 6 fig]
  • Authors:
    • Jiang, C
    • Troesch, A W
    • SHAW, S W
  • Publication Date: 1994

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00717288
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 4 1996 12:00AM