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Wreck Diving Introduction Why Dive a Wreck Special Considerations What’s Expected of you.

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Presentation on theme: "Wreck Diving Introduction Why Dive a Wreck Special Considerations What’s Expected of you."— Presentation transcript:

1 Wreck Diving Introduction Why Dive a Wreck Special Considerations What’s Expected of you

2 Why Wreck Dive? Curiosity – activated your imagination

3 Why Wreck Dive? History – you view a snapshot of the past

4 Why Wreck Dive? History – you view a snapshot of the past

5 Why Wreck Dive? History – you view a snapshot of the past

6 Why Wreck Dive? Aquatic Life – it acts as an artificial reef

7 Why Wreck Dive? Photography – wreck can be very photogenic

8 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

9 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

10 Special Hazards Underwater Wrecks are subject to many different deteriorating forces –Strong currents –Sand (debris) blasting –Bacterial material –Worms Bacterial Rusticle

11 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

12 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

13 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.

14 Special Hazards Aquatic Life: As an artificial reef fish come for refuge and a variety of organic growth occurs

15 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

16 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

17 Special Considerations Deeper Depth: Air supply Decompression Status Nitrogen Narcosis

18 Special Considerations Orientation (briefing): Research the wreck Know the hazards – learn any specialized techniques Know the Points of Interest

19 Special Considerations Wreck Penetration: Resist Temptation! Wreck penetration increases the potential hazards dramatically!

20 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!

21 Assessing a Wreck Identify: The hazards The Points of Interest The overall condition

22 Assessing a Wreck Navigate: Baseline Feature reference Follow the ships layout

23 Assessing a Wreck Navigate using the ships baseline

24 Assessing a Wreck Navigate using the ships features

25 Assessing a Wreck Navigate using the ships layout

26 What we expect from you! Observe and use your diving skills! Buddy skill – monitor air supply – buoyancy control


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