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2. Standard diving dress - Wikipedia

   en.wikipedia.org/wiki/Standard_diving_dress

   Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit or heavy gear, is a type of diving suit that was formerly used for all relatively deep underwater work that required more than breath-hold duration, which included marine salvage, civil engineering, pearl shell diving and other commercial diving work, and similar naval diving applications.

3. Diving weighting system - Wikipedia

   en.wikipedia.org/wiki/Diving_weighting_system

   Buoyancy control is considered both an essential skill and one of the most difficult for the novice to master. Lack of proper buoyancy control increases the risk of disturbing or damaging the surroundings, and is a source of additional and unnecessary physical effort to maintain precise depth, which also increases stress.

4. Wetsuit - Wikipedia

   en.wikipedia.org/wiki/Wetsuit

   An average person has a surface area of about 2 m 2, [14] so the uncompressed volume of a full one piece 6 mm thick wetsuit will be in the order of 1.75 x 0.006 = 0.0105 m 3, or roughly 10 liters. The mass will depend on the specific formulation of the foam, but will probably be in the order of 4 kg, for a net buoyancy of about 6 kg at the surface.

5. Caseless ammunition - Wikipedia

   en.wikipedia.org/wiki/Caseless_ammunition

   Caseless ammunition (CL), [1] or caseless cartridge, is a configuration of weapon-cartridge that eliminates the cartridge case that typically holds the primer, propellant and projectile together as a unit. Instead, the propellant and primer are fitted to the projectile in another way so that a cartridge case is not needed, for example inside or ...

6. Velocity (video game) - Wikipedia

   en.wikipedia.org/wiki/Velocity_(video_game)

   Velocity Ultra is a high-definition remake of Velocity for the PlayStation Vita and was released on May 15, 2013. The remake includes numerous new features and upgrades and the graphics for Velocity Ultra have been completely remade to accommodate the high-definition resolution of the Vita. The art style has been reworked to be more consistent ...

7. Velocity made good - Wikipedia

   en.wikipedia.org/wiki/Velocity_made_good

   Velocity made good, or VMG, is a term used in sailing, especially in yacht racing, indicating the speed of a sailboat towards (or from) the direction of the wind. [ 1 ] [ 2 ] The concept is useful because a sailboat cannot sail directly upwind, and thus often can not, or should not, sail directly to a mark to reach it as quickly as possible.