A RESISTANCE STUDY ON A SYSTEMATIC SERIES OF LOW L B VESSELS/

Model resistance test results for a systematic series of low L/B, disp lacement-type vessels are presented. The UBC Series is based on West C oast seiners and trawlers. These vessels have low L/B and L/V1/3 value s that are outside the range of existing model series data. A parent h ull form was developed that has 14 percent less resistance and yet has the same displacement and deck area of a typical fishing vessel. A se ries of 13 models was generated by systematically varying L/B, B/T and C(b). Algorithms are presented for calculation of the resistance of s imilar small vessels for two loading drafts. Results of side bulb appl ications reduced the resistance of the parent hull at design speed by an additional 16.6 percent. The parent hull form is designed as a deve lopable hull form.