The list of underwater acronyms and abbreviations.

All underwater related acronyms and abbreviations.

Stands For|0Abbreviated As|3Related|290

290 entries under topic. ×

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NED:
Network of Egghead Divers(Scuba diving, Diving, Underwater)
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NEDU:
Naval Experimental Diving Unit(Scuba diving, Diving, Underwater)
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NERC:
National Environment Research Council(Scuba diving, Diving, Underwater)
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NHC:
National Hyperbaric Centre(Scuba diving, Diving, Underwater)
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NI:
National Instructor(Scuba diving, Diving, Underwater)
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NSB:
Natal Shark Board(Scuba diving, Diving, Underwater)
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NSS:
National Speleological Society(Scuba diving, Diving, Underwater)
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OD:
Ocean Diver(Scuba diving, Diving, Underwater)
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OMS:
Ocean Management Systems(Scuba diving, Diving, Underwater)
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OTT:
Oxygen Tolerance Test(Scuba diving, Diving, Underwater)
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OTU:
Oxygen Toxicity Unit(Dive gear, Scuba diving, Diving)
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OW:
Open Water(Scuba diving, Diving, Underwater)
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OWI:
Open Water Instructor(Scuba diving, Diving, Underwater)
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OWIC:
Open Water Instructor Course(Scuba diving, Diving, Underwater)
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OWSI:
Open Water Scuba Instructor(Scuba diving, Diving, Underwater)
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PADUA:
Pennsylvania Analysis of Decompression for Undersea and Aerospace
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PDC:
Personal Dive Computer(Scuba diving, Diving, Underwater)
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PDIC:
Professional Diving Instructors Corporation(Scuba diving, Diving)
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PP:
Partial Pressure(Scuba diving, Diving, Underwater)
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PTC:
Personal Transfer Capsule(Scuba diving, Diving, Underwater)
For more, try UNDERWATER on ALL ACRONYMS DICTIONARY
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APASmart Define. (2018). underwater. Retrieved September 25, 2026, from http://smartdefine.org/underwater/abbreviations/r/Science
ChicagoSmart Define. 2018. "underwater" http://smartdefine.org/underwater/abbreviations/r/Science (accessed September 25, 2026).
HarvardSmart Define 2018, underwater, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/underwater/abbreviations/r/Science>.
MLASmart Define. "underwater" 12 January 2018. Web. 25 September 2026. <http://smartdefine.org/underwater/abbreviations/r/Science>