ROLL REDUCTION ON FISHING VESSELS USING BILGE KEELS AND PASSIVE BILGE FINS

This paper reports on an experimental study conducted in the Massachusetts Institute of Technology (MIT) Ship Model Towing Tank comparing the roll-damping effectiveness of devices applied to models of 23.16m and 36.27m New England trawlers. The devices studied include three different shapes of bilge keels and six different shapes of passive bilge fins. Comparisons were made of the roll motions allowed by each device as the model was subjected to known exciting moments at the hull's natural frequency. Measurements were made at steaming, trawling, and zero speed. Data are presented in the form of damping ratios versus damping device design parameters including area and aspect ratio. Resistance effects at steaming speeds are also presented. Practical considerations of these devices are discussed.

Media Info

  • Features: References;
  • Pagination: 8p.

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Filing Info

  • Accession Number: 00659985
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM