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A Minecraft mod is a mod that changes aspects of the sandbox game Minecraft. Minecraft mods can add additional content to the game, make tweaks to specific features, and optimize performance. Thousands of mods for the game have been created, with some mods even generating an income for their authors.
Output of a computer model of underwater acoustic propagation in a simplified ocean environment. A seafloor map produced by multibeam sonar. Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries.
The APS underwater assault rifle (Russian: Автомат Подводный Специальный, romanized: Avtomat Podvodny Spetsialnyy, lit. 'Special Underwater Assault Rifle') is an underwater firearm designed by the Soviet Union in the early 1970s.
Underwater warfare, also known as undersea warfare [1] or subsurface warfare, [2] is naval warfare involving underwater vehicle or combat operations conducted underwater.It is one of the four operational areas of naval warfare, the others being surface warfare, aerial warfare, and information warfare.
An underwater vehicle is any member of the class of watercraft that is intended to operate in the underwater environment, as opposed to surface vessels that only stay afloat on top of water.
A technical diver using a closed circuit rebreather with open circuit bailout cylinders returns from a 600-foot (180 m) dive.. One of the more obvious environmental constraints on diving is the ambient pressure, which is a function of depth and density.
The rescue of Roger Mallinson and Roger Chapman occurred between 29 August and 1 September 1973 after their Vickers Oceanics small submersible Pisces III was trapped on the seabed at a depth of 1,575 feet (480 m), 150 miles (240 km) off Ireland in the Celtic Sea.
The British Sub-Aqua Club or BSAC has been recognised since 1954 by UK Sport as the national governing body of recreational diving in the United Kingdom. [3]The club was founded in 1953 and at its peak in the mid-1990s had over 50,000 members declining to over 30,000 in 2009.