SDI COMPUTER NITROX
Nitrox is a breathing gas that has a lot of benefits for both new and experienced divers. This cours...
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FULL FACE MASK
Divers often have a need, or want, to effectively communicate underwater. The SDI Full Face Mask Cou...
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SOLO DIVER
At one point or another, many divers have found themselves alone during a dive, whether it was inten...
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VISUAL INSPECTION PROCEDURES
This Cylinder Inspection Course is designed to promote safety in the care and maintenance of high-pr...
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NIGHT AND LIMITED VISIBILITY
Many divers find that night diving is their favorite type of diving. As with all speciality diving a...
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