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The original snorkel parka (USAF N-3B parka, which is 3/4 length and has a full, attached hood; the similar N-2B parka is waist-length and has an attached split hood) was developed in the United States during the early 1950s for military use, mainly for flight crews stationed in extremely cold areas. It was designed for use in areas with ...
The dry suit is a form of exposure suit, a garment worn to protect the user from adverse environmental conditions.The two most common purposes are to insulate the wearer against excessive heat loss, and to isolate the wearer from direct contact with a liquid environment during immersion or repeated multi-directional contact with bulk liquids or spray.
An immersion suit, also known as a survival suit, is a type of waterproof dry suit intended to protect the wearer from hypothermia if immersed in cold water or otherwise exposed after abandoning a vessel, especially in the open ocean. Immersion suits usually have integral footwear, and a hood, and either built-in gloves or watertight wrist seals.
A diving suit is a garment or device designed to protect a diver from the underwater environment.A diving suit may also incorporate a breathing gas supply (such as for a standard diving dress or atmospheric diving suit), [1] but in most cases the term applies only to the environmental protective covering worn by the diver.
The suit included a metal helmet which was riveted to a waterproof jacket that ended below the diver's waist. The suit worked like a diving bell—air pumped into the suit escaped at the bottom edge. The diver was extremely limited in range of motion and had to move about in a more or less upright position.
A small notebook of waterproof paper carried by some divers [46] wet pot 1. Water filled hyperbaric chamber, generally for experimental work or training. See Diving chamber#Wet pot 2. Transfer chamber in a saturation system, where the bell is locked on and wet equipment removed after the dive. [47] wetsuit. Main article: Wetsuit
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