Wikipedia

Index of underwater diving: L–N

See the Glossary of underwater diving terminology for definitions of technical terms, jargon, diver slang and acronyms used in underwater diving
See the Index of recreational dive sites for an alphabetical listing of articles about places which are recreational dive sites
See the Index of underwater divers for an alphabetical listing of articles about underwater divers
See the Outline of recreational dive sites for a hierarchical listing of articles about sites used for recreational diving
See the Outline of underwater diving for a hierararchical listing of underwater diving related articles grouped by topical relevance

The following index is provided as an overview of and topical guide to underwater diving: Links to articles and redirects to sections of articles which provide information on each topic are listed with a short description of the topic. When there is more than one article with information on a topic, the most relevant is usually listed, and it may be cross-linked to further information from the linked page or section.

Two divers wearing lightweight demand helmets stand back-to-back on an underwater platform holding on to the railings. The photo also shows the support vessel above the surface in the background.
Surface-supplied divers riding a stage to the underwater workplace

Underwater diving can be described as all of the following:

  • A human activity – intentional, purposive, conscious and subjectively meaningful sequence of actions. Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater environment for pleasure, competitive sport, or as a means to reach a work site for profit or in the pursuit of knowledge, and may use no equipment at all, or a wide range of equipment which may include breathing apparatus, environmental protective clothing, aids to vision, communication, propulsion, maneuverability, buoyancy control and safety equipment, and tools for the task at hand.

There are seven sub-indexes, listed here. The tables of content should link between them automatically:

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  • LR5 – Crewed submersible for submarine rescue
  • LR7 – Crewed submersible undersea rescue vehicle

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  • MSDS Marine – British marine and coastal archaeological contractor
  • MSM-1 – Italian deep-submergence rescue vehicle
  • Msw – Metre of sea water, a unit of pressure
  • Muck diving – Recreational diving on a loose sedimentary bottom
  • Multi-level dive – Scuba diving in consecutively shallower depth ranges on one dive
  • Muscle memory, also known as muscle-memory – Consolidating a motor task into memory through repetition
  • Mushroom valve – Arrangement and function of the components of regulators for underwater diving
  • M-value (decompression) – Maximum inert gas supersaturation allowed for a tissue in decompression theory}

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  • Night diver – Certification of competence to scuba dive at night
  • Night diving – Underwater diving during the hours of darkness
  • Nikonos – Brand of 35mm film amphibious cameras
  • Nitrogen narcosis – Reversible narcotic effects of respiratory nitrogen at elevated partial pressures
  • Nitrous oxide (medication) – Gas used as anesthetic and for pain relief
  • Nitrox – Breathing gas, mixture of nitrogen and oxygen
  • Nitrox blender – Person competent to blend nitrox for scuba diving
  • Nitrox diver – Recreational diving qualification to dive using oxygen enriched air
  • Nitrox production – Methods of producing nitrox mixtures

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  • Nuclear diving – Diving in an environment where there is a risk of exposure to radioactive materials
  • Nuytco Research – Manufacturer of atmospheric diving suits

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