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Discover the allure of wreck diving - history, aquatic life, and photography. Learn about special considerations, hazards, legal aspects, and artifact removal. Ensure safety, respect, and navigation skills for a successful dive experience.
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Wreck Diving • Introduction • Why Dive a Wreck • Special Considerations • What’s Expected of you
Why Wreck Dive? • Curiosity – activated your imagination
Why Wreck Dive? • History – you view a snapshot of the past
Why Wreck Dive? • History – you view a snapshot of the past
Why Wreck Dive? • History – you view a snapshot of the past
Why Wreck Dive? • Aquatic Life – it acts as an artificial reef
Why Wreck Dive? • Photography – wreck can be very photogenic
Artifacts – should I or shouldn’t I? Things to consider before you remove artifacts • It may be illegal • You may reduce its historical value • You may not have the skills necessary to remove or preserve the artifacts
The Legal Aspect The Wreck may be subject to: • International Law • Federal Law • State Law • Local Law Things to consider before you remove artifacts • It may be illegal • Permits may be required
Special Hazards Underwater Wrecks are subject to many different deteriorating forces • Strong currents • Sand (debris) blasting • Bacterial material • Worms Bacterial Rusticle
Special Hazards Hazards are created as the wreck deteriorates Mankind can also add to the hazards • Hazards that must be considered: • Sharp Object • Entanglement issues • Aquatic Life • Structural integrity • Surge and suction pockets created by currents
Special Hazards Sharp Objects: • As a wreck crashes to the ocean floor the forces acting upon it tear it apart leaving broken wood and torn metal – from there Mother Nature finishes the job
Special Hazards Entanglement: • Wreck become artificial reefs – as such they attract fisherman, trawlers and shrimpers. All represent entanglement issues as well as the rigging on the wreck.
Special Hazards Aquatic Life: As an artificial reef fish come for refuge and a variety of organic growth occurs
Special Hazards Structural Integrity: • As a wreck crashes to the ocean floor the forces acting upon it tear it apart leaving broken wood and torn metal – what is left must then contend with the currents
Special Hazards Surge and Suction: • Cross current can be blocked by the superstructure but as soon as you pass by an opening you may be sucked in or pushed away
Special Considerations Deeper Depth: • Air supply • Decompression Status • Nitrogen Narcosis
Special Considerations Orientation (briefing): • Research the wreck • Know the hazards – learn any specialized techniques • Know the Points of Interest
Special Considerations Wreck Penetration: • Resist Temptation! • Wreck penetration increases the potential hazards dramatically!
Special Considerations Wreck Penetration: • Potential Hazards • Loss of Direction • Collapsed or blocked passageways • NO direct access to the surface • Restricted passageways • Falling objects • Silt The greatest danger may be your failure to recognize that you are not in a terrestrial environment!
Assessing a Wreck Identify: • The hazards • The Points of Interest • The overall condition
Assessing a Wreck Navigate: • Baseline • Feature reference • Follow the ships layout
Assessing a Wreck Navigate using the ships baseline
Assessing a Wreck Navigate using the ships features
Assessing a Wreck Navigate using the ships layout
What we expect from you! Observe and use your diving skills! Buddy skill – monitor air supply – buoyancy control