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Underwater Search Techniques

Underwater Search Techniques. A brief odyssey by Darin Edmunds. About searching underwater…. Considerations. Conditions Hydrology Search Item Equipment Position Area Techniques. Bottom Flat Undulating Sloping. Water Weather Divers. Size Colour Fragility. Ropes Boats Floats.

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Underwater Search Techniques

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  1. Underwater Search Techniques A brief odyssey by Darin Edmunds BSAC AI Course Gozo

  2. About searching underwater… Considerations • Conditions • Hydrology • Search Item • Equipment • Position • Area • Techniques Bottom Flat Undulating Sloping Water Weather Divers Size Colour Fragility Ropes Boats Floats ITVO? GPS coords Transits Swim lines Circular Towed Snag line Jackstay Grid Open Water Shore Size The Circular Search BSAC AI Course Gozo

  3. Circular Search - Setup Essential Equipment Shot line (12-15mm) Shot Weight (15-25kg) Buoy (50Kg buoyancy) Searches must be 100% Data line/marker Swim line Overlapping vision/touch Techniques BSAC AI Course Gozo

  4. Adaptations… • Semi-circular search • Snag method BSAC AI Course Gozo

  5. Unsuitability…… Increasing saw tooth profile • Non-tidal search area • 30m radius limit* • Not suitable for slopes* BSAC AI Course Gozo

  6. Circular Search… Summary Techniques BSAC AI Course Gozo

  7. The End Thank you BSAC AI Course Gozo

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