Glossary of Scuba Diving Terms (L)

Understanding That Strange Scuba Language

Welcome to our glossary of scuba diving terms. Diving, like many sports, has its own language. Our scuba glossary is for anyone interested in understanding the scuba diving definitions, scuba diving terms or scuba slang found in this strange scuba communication that divers use.

Our scuba glossary is easy to use. Just click on the letter that corresponds to the first letter of the word that you are looking for. All the words that begin with that letter will be displayed.

We will be constantly adding new terms to our scuba glossary. If you think we have missed a term or you can not find the scuba diving information you are looking for, please let us know. We will add it and the best definition we can find to our glossary of scuba diving terms.

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L

A sudden unconsciousness from hypoxia (lack of oxygen) that occurs among some breath hold divers. The condition often occurs near the surface after a deeper dive.

A bladder (balloon) type bag used for lifting heavy objects in water. The bag is tied to the object to be lifted and inflated with air. As the bag fills with air, it will start to rise.

The amount of buoyancy provided by a Buoyancy Compensator. The lift capacity will vary according to size and purpose of the BC. For example, a BC intended for use in cold fresh water will provide greater lift capacity than one intended primarily for use in warm salt water.

A recreational diving boat that is equipped to conduct extended diving trips without returning to port. Recreational live aboard dive boats are between 50 and 130 feet long, can carry from 10 to 30 divers for up to a week or more, and provide eating and sleeping accommodations.

A book that shows a divers dive history. This diary provides proof of the diver’s dive experience. The entries should include the depth and length of the dives and the diving environment (deep dive, night dive, wreck dive).

A current running parallel to the shore line.

The hose that connects the second stage to the first stage of a regulator. This type of hose is also used to connect the BC inflator to the first stage of the regulator.

A mask with a smaller area between the glass and the diver's face. This type of mask normally comes with separate lenses for each eye and requires less air to purge if it becomes flooded.