Q.32
Among different components of a trawl gear,
which of the following contributes maximum to the total drag?
- Hydrodynamic Drag in Trawl Systems:
- When towing a bottom or midwater trawl through water, the total gear drag ($R_T$) is the sum of component resistances:
- Netting Webbing Drag: The netting body (twines, knots, meshes, and codend) accounts for $55\% - 65\%$ of the total gear resistance due to skin friction and form drag across the thousands of open meshes.
- Otter boards (doors) contribute $15-20\%$, towing warps contribute $10-15\%$, and floats/rigging contribute $5\%$.
- Correct Option: Option 3 (Netting).
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