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Night Diving

Night Diving. Why dive at night? Special equipment Night diving procedures Overview of night dive. Curiosity - offers a certain mystique and fascination Nocturnal marine life A new look at a familiar site Additional chance to dive

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Night Diving

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  1. Night Diving • Why dive at night? • Special equipment • Night diving procedures • Overview of night dive

  2. Curiosity - offers a certain mystique and fascination Nocturnal marine life A new look at a familiar site Additional chance to dive Night diving allows you to see the natural colors of organisms by providing artificial light Night DivingReasons

  3. Bioluminescence The light produced by a chemical reaction from an organism which is transferred to light energy. Night DivingReasons

  4. Night DivingLights • Types of Lights • Disposable battery or rechargeable • Different types of handles

  5. Night Diving Lights • Lights • Primary and Backup light

  6. Night DivingLight Use • Keep lights off when underway • Make sure light is on when entering water • DO NOT point in others eyes • To gain attention • U/W Hand signals • Surface signals • Turn light off when not in use. • Light maintenance

  7. KEY LARGO Each diver will be required to supply four new “C” batteries for your USF issued light.

  8. Night DivingLight Stick • Each diver should be equipped with a light stick. • Battery powered or chemical stick • Allows for a visual above and below water

  9. Night DivingUnderwater Strobe Light • Serves as visual reference for the descent line and the entry/exit point.

  10. Night Diving Procedures • Select a familiar dive site that is easy to navigate. • Plan your entry at dusk • Reduce the distance you swim

  11. Night Diving Procedures • Remain close to your buddy • Note any special features on your buddy as well as your group leader. • Decide who will lead and who will follow • Determine what to do in the event you become separated.

  12. Night Diving Procedures • Monitor Air Supply • Control Anxiety • Stop, Breathe, Think, Act

  13. Overview of Night Dive Key Largo • We will be diving on a site dived earlier that day • The water temperature will not change significantly • Topside conditions will have a tendency to be cool- bring something warm to wear for the return trip. • Do not turn your lights or lightsticks on while the vessel is underway • Stay with your buddy and your group • Your dive leader will review additional emergency procedures prior to the dive

  14. Night Diving Key Largo • There will limited time between afternoon dives and night dives – 1 hour max. - bring food for between dives • Between dives remove only your tanks • After the night dive stow gear in locker • Eat dinner

  15. Night Diving Key Largo • Spaghetti, sauce, meatballs and bread will be provided • You will need to provide a beverage & salad if desired • Don’t be late – get a good nights sleep

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