Q.74
What is the purpose of using stabilizers or hydrofoil depressors in coastal troll fishing?
- Hydrodynamic Depressors in 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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