Rampani Net: A famous, massive traditional beach seine operated along the southwest coast of India (specifically Goa, Karnataka, and the Konkan coast of Maharashtra) to capture coastal schooling pelagics (Indian oil sardines and Indian mackerels).
It consists of hundreds of netting sections laced together, measuring up to $1-2\text{ km}$ in length, operated by 60–80 fishermen and large non-mechanized Rampani rowboats.
Stake nets and Dol nets are fixed tidal bag nets; Trammel nets are bottom-set three-walled entangling nets.
Correct Option: Option 3 (Rampani).
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Q.72
Fishing Technology and Engineering- ICAR JRF/SRF 2024
MCQ (Single Correct)+4−1
How much is the burst speed of fish for short duration
Fish swimming performance is categorized into three speed regimes:
Sustained (Cruising) Speed: $2 - 3\text{ body lengths/second (BL/s)}$ powered aerobically by red muscle without fatigue ($\gt 200\text{ minutes}$).
Prolonged Speed: $4 - 7\text{ BL/s}$ maintained for $20\text{ seconds to } 200\text{ minutes}$.
Burst Speed: $10\text{ body lengths per second (10 BL/s)}$ (and up to $12-15\text{ BL/s}$ in pelagics like tuna and mackerel). Powered anaerobically by white muscle glycogenolysis, sustainable only for very short bursts ($\lt 20\text{ seconds}$) for predator escape or prey capture.
Correct Option: Option 1 (10 body lengths per second).
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Q.73
Fishing Technology and Engineering- ICAR JRF/SRF 2024
MCQ (Single Correct)+4−1
Drawing the lines of the lines plan to full size in boat construction is termed as
Mould Lofting: The specialized naval architecture practice of drawing out the ship lines plan (sheer plan, body plan, and half-breadth plan) to $1:1$ full scale on the floor of a large workshop called the mould loft.
Lofting enables boatbuilders to fair out any drawing discrepancies, establish accurate rib/frame geometries, and cut full-sized wooden templates (moulds) and patterns for keel, frames, and stem construction.
Correct Option: Option 3 (Mould lofting).
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Q.74
Fishing Technology and Engineering- ICAR JRF/SRF 2024
MCQ (Single Correct)+4−1
What is the purpose of using stabilizers or hydrofoil depressors in coastal troll fishing?
In coastal and pelagic troll line fishing, lures or baited jigs are towed behind a moving boat.
Hydrofoil Depressors (Planers / Paravanes): Specialized inverted hydrodynamic wings attached to the main trolling line. As water flows over the cambered foil, it generates a downward hydrodynamic force (negative lift), diving the line and taking the hook/lure below the water surface to the exact operating depth of target pelagics without requiring cumbersome, heavy lead weights.
Correct Option: Option 4 (To take the line below the water surface.).
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Q.75
Fishing Technology and Engineering- ICAR JRF/SRF 2024
Classification of Bycatch Reduction Devices (BRD):
Bycatch Reduction Devices in shrimp trawls are divided into two physical classes:
Soft BRDs: Made of flexible webbing modifications (e.g., fisheye escape openings, bigeye, square mesh windows).
Hard BRDs: Made of rigid solid frames. The Nordmøre Grid is the classic Hard BRD—a rigid, inclined metal or hard composite sorting grid installed in the trawl extension before the codend that deflects large finfish up and out of an escape hatch while allowing shrimp through narrow vertical bar spacings ($19-25\,\text{mm}$).
Correct Option: Option 4 (Hard BRD).
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