Appendix A APPENDIX 203 CHAPTER 3 Using Mask, Snorkel, and Fins 1. Backward. 2. Use your buddy or wall for support, sit down. 3. Blast, displacement. 4. Displacement. Assembling Scuba Gear 5. So the inlet to the first stage of the regulator lines up with the outlet from the cylinder valve. 6. Counterclockwise. 7. Undo any clips on the front of the BC and the waistband; lift your unit as a buddy team; make sure you have your regulator, octopus, and gauges out of the way when you fasten your waistband and clips; let your buddy know when you have the waistband fastened and can support the weight of the cylinder yourself. 8. After you don your scuba unit. Entries and Exits 9. Buoyancy compensator, air supply, regulator, octopus, weight belt. 10. BC should be partially inflated to provide buoyancy, hold your mask firmly in place to avoid flooding it or having it come off, breathe from your regulator during the entry, make sure that the entry area below you is clear and sufficiently deep for the type of entry you are using. 11. Get yourself into the water with minimal effort and effect on you and your equipment. 12. A. Distance to the water is several feet. B. Low, unstable platform or small boat. C. Able to sit at the edge of the water. Mask Skills 13. Orient your mask so that the inside of the mask is facing you and your snorkel is on the left side, place the mask strap on the back of your head and position the mask over your eyes and nose, pull the mask away from your forehead and make sure that all of your hair or your hood is out of the mask, inhale a breath of air, put the heel of your hand to the top of the mask frame and push in, start exhaling through your nose as you tip your head back. 14. Toward the bottom. Regulator Skills 15. Blow tiny bubbles. 16. Blast, purge. 17. Hold the mouthpiece loosely in your mouth. Buoyancy 18. Exchange your snorkel for your regulator, note the exact time that your head leaves the surface, deflate your BC, equalize your ears before you start your descent, exhale and begin your feetfirst descent. 19. Maintain eye contact with your buddy, equalize your air spaces often, control buoyancy, control rate of descent. 20. Signal buddy, agree to ascend, look up, reach up, swim up, control buoyancy, ascend no faster than 9 meters (30 feet) per minute. 21. Amount of weight you wear, amount of air in your BC, amount of air in your lungs, objects you are carrying, type of diving suit you are wearing, amount of air in your cylinder. 22. Vent the air. Safety Skills 23. Two. 24. You and your buddy should agree on which regulator will be used before the dive. 25. Practice before the dive and again at the very beginning of the dive while on the surface. 26. When no source of air is available and you are deeper than 40 feet.
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