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A AAW An acronym for anti-aircraft warfare. aback (of a sail) Filled by the wind on the opposite side to the one normally used to move the vessel forward.On a square-rigged ship, any of the square sails can be braced round to be aback, the purpose of which may be to reduce speed (such as when a ship-of-the-line is keeping station with others), to heave to, or to assist moving the ship's head ...
one 40 mm (1.57 in) Bofors antiaircraft cannon. two .50 cal (12.7 mm) machineguns [4] USS Balao (SS/AGSS-285) was the lead ship of the United States Navy 's Balao -class submarines during World War II and named for the balao, a small schooling marine fish.
50-by-80-foot (15 m × 24 m) flight deck, hangar for all aircraft. The Legend-class cutter, also known as the National Security Cutter ( NSC) and Maritime Security Cutter, Large, is the largest active patrol cutter class of the United States Coast Guard, with the size of a frigate. Entering into service in 2008, the Legend class is the largest ...
The flanking maneuver is a basic military tactic with several variations. Flanking an enemy entails attacking from one or more sides, at an angle to the enemy's direction of engagement. There are three standard flanking maneuvers. The first maneuver is the ambush, where a unit performs a surprise attack from a concealed position.
1 × 5-inch (127 mm) / 25 caliber deck gun [4] Bofors 40 mm and Oerlikon 20 mm cannon. The Balao class was a design of United States Navy submarine used during World War II, and with 120 [2] boats completed, the largest class of submarines in the United States Navy. An improvement on the earlier Gato class, the boats had slight internal ...
The Oliver Hazard Perry class is a class of guided-missile frigates named after U.S. Commodore Oliver Hazard Perry, a commander noted for his role in the Battle of Lake Erie. Also known as the Perry or FFG-7 (commonly "fig seven") class, the warships were designed in the United States in the mid-1970s as general-purpose escort vessels ...
The Astute class are built at the Devonshire Dock Hall, Barrow-in-Furness. In November 1999, British Aerospace purchased GEC-Marconi and created BAE Systems. At the time of the takeover, it had been approximately 20 years since the Vanguard class were designed, and the last of the boats had already been launched. [9]
Cavitation is a significant cause of wear in some engineering contexts. Collapsing voids that implode near to a metal surface cause cyclic stress through repeated implosion. This results in surface fatigue of the metal, causing a type of wear also called "cavitation".