Factors Affecting the Performance of a Survey Bottom Trawl

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Summary of Literature Search (contd.) • Kondratev. 1973. Modeling of Commercial Fishing Gear by the Method of Analog Mechanisms. Translated form Russian. – Chapter: Effect of Difference in Warp Length on the Working of a Trawl.
Question Addressed: (Kondratev) • “When a trawl breaks down fishermen usually first verify the warps.” • “Can we justify such demands on warps and the associated loss of fishing time to remeasure the warp?” • “To answer this question, tests where made on a 31m ( 96 feet) trawl”. -Model tests -Full scale fishing trials
Page 1 and 2: Factors Affecting the Performance o
Page 3 and 4: Presentation Outline • Factors af
Page 5 and 6: General Questions Related to Bottom
Page 7 and 8: Measures of Bottom Survey Trawl Per
Page 9 and 10: Goal with Regard to Bottom Survey T
Page 11 and 12: Bottom Trawl System: Towing Vessel,
Page 13 and 14: No Offset in Warp Length
Page 15 and 16: 6 foot Offset in Warp Length
Page 17 and 18: Results of Literature Search • Ov
Page 19 and 20: Results and Conclusions: (Doubleday
Page 21 and 22: Results and Conclusions: (Lauth, Sy
Page 23: Results and Conclusions: (DeAlteris
Page 27 and 28: Results and Conclusions: (Kondratev
Page 29 and 30: Results of Canvass of Professionals
Page 31 and 32: Advice and Experience of Experts
Page 37: Summary and Conclusions (ll) • Ge

Factors Affecting the Performance of a Survey Bottom Trawl

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