Light Salvage. Objectives Identify the maximum weight for light salvage. State three areas of...
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Transcript of Light Salvage. Objectives Identify the maximum weight for light salvage. State three areas of...
![Page 1: Light Salvage. Objectives Identify the maximum weight for light salvage. State three areas of salvage organization and describe techniques for each. Describe.](https://reader035.fdocuments.us/reader035/viewer/2022081007/56649d035503460f949d6380/html5/thumbnails/1.jpg)
Light Salvage
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Objectives
• Identify the maximum weight for light salvage.• State three areas of salvage organization and describe
techniques for each.• Describe proper techniques for use of a lift bag.• Describe proper techniques for lifting an imbedded
object.• State the primary requirement for any knot, and
identify three common knots and their uses.• Discuss hazards which might be encountered during
salvage operations.
![Page 3: Light Salvage. Objectives Identify the maximum weight for light salvage. State three areas of salvage organization and describe techniques for each. Describe.](https://reader035.fdocuments.us/reader035/viewer/2022081007/56649d035503460f949d6380/html5/thumbnails/3.jpg)
Main Points
• Maximum weight for light salvage
• Salvage equipment
• Search patterns
• Preparing to search
• Rigging
• Hazards
• Emergency Procedures
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Maximum Weight
• Weight for light Salvage– 100lbs
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Salvage Equipment
• Float Marker
• Compass Board
• Distance Measuring Devices
• Air Supply
• Lift Bag
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Lift Bags
• Types– Commercial– B.C.D.– Plastic garbage bag inside a mesh goody bag.
• Selection Criteria– Capacity should be approx. the same as weight of the
object.– Dump mechanism– Ease of use– Availability
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Lift Bags cont.
• Techniques– Use a separate air source not your reg.– Fill slowly and test frequently.
• Add just enough air to be neutral or slightly negative
– Release an out of control object.– Diver position
• Avoid directly above or below bag/object
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Search Patterns
• Selection Criteria– Size of object – Size of area to be searched– Environmental conditions
• Depth• Wind• Current• Topography• Marine Life
– Equipment– Personnel
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Search Patterns cont.
• Types of Patterns– Expanding circles
– Expanding Squares
– Grid
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Search Patterns cont.
• Preparing to search– Buddy Discussion– Dry Practice– Constant Visualization ( Diagram on a slate)
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Search Techniques cont.
• Running the pattern– Each leg overlaps previous leg in terms of
visibility– Run each leg in both directions as required
by terrain– One buddy watches compass while other
buddy searches– Start deep and work shallow
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Rigging
• Embedded object– Tidal winch– Surge winch
• Knots– Primary requirement– Types
• Bowline• Sheet bend• Square knot / reef knot
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Hazards• Object itself• Tools/equipment• Depth
– Narcosis– DCI– Air consumption
• Environment– Marine Life– Hypothermia– Water Movement– Limited Visibility
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Hazards cont.
• Using your own BC as a lift bag– Ideally, never use your BC as a lift. – Should it be necessary,
• Do so only as a last resort• Use the minimum air necessary• Be prepared to dump air immediately
• USE EXTREME CARE WHEN USING YOUR BC AS A LIFT BAG!
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Emergency Procedures
• Establish beforehand
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Have We Covered
• Maximum weight for light salvage
• Salvage equipment
• Search patterns
• Preparing to search
• Rigging
• Hazards
• Emergency Procedures
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Are You Able to
• Identify the maximum weight for light salvage.• State three areas of salvage organization and describe
techniques for each.• Describe proper techniques for use of a lift bag.• Describe proper techniques for lifting an imbedded
object.• State the primary requirement for any knot, and
identify three common knots and their uses.• Discuss hazards which might be encountered during
salvage operations.
![Page 18: Light Salvage. Objectives Identify the maximum weight for light salvage. State three areas of salvage organization and describe techniques for each. Describe.](https://reader035.fdocuments.us/reader035/viewer/2022081007/56649d035503460f949d6380/html5/thumbnails/18.jpg)
Conclusion
• Preparation, practice and team work are the keys to successful search and salvage missions.