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Mod 11 was a Mod 7 that had the chamber lengthened, adding 235 cu in (3,851 cm 3), and a 3½° breech band seating slope and used Breech Mechanism Mark 12. Mod 12 used a Mod 10 and lengthened the chamber and added a 3½° breech band seating slope with Mod 13 being similar but of a Mod 8, Mod 14 used a Mod 9, Mod 15 used a Mod 7, Mod 16 used a ...
The lightweight 16-in/50 Mark 7 was designed to resolve this conflict. These guns were 50 calibers long, 50 times their 16-inch (406 mm) bore diameter with barrels 66.7 ft (20.3 m) long, from chamber to muzzle. Each gun weighed about 239,000 lb (108 t) without the breech, and 267,900 lb (121.5 t) with the breech. [1]
Torpedo Data Computer. U.S. Navy Mk III Torpedo Data Computer, the standard US Navy torpedo fire control computer during World War II. Later in World War II (1943), it was replaced by the TDC Mk IV, which was an improved and larger version. The Torpedo Data Computer (TDC) was an early electromechanical analog computer used for torpedo fire ...
The Mark 3 exploder was designed when torpedo speeds were much slower (the Mark 10 torpedo's speed was 30 knots (56 km/h)), but even then the Mark 3 prototypes had problems with the firing pin binding during the high deceleration when the torpedo collided with the target. The solution was to use a stronger firing spring to overcome the binding ...
[7] [6] The Mark 13 ran 12.8 knots (23.7 km/h; 14.7 mph) slower than the Mark 14 torpedo, a characteristic which, along with a lesser mass, lesser negative buoyancy and the lack of a magnetic influence feature in its Mark IV exploder, meant that it did not suffer from some of the same problems as its larger siblings.
The Mark 1, and later the Mark 1A, Fire Control Computer was a component of the Mark 37 Gun Fire Control System deployed by the United States Navy during World War II and up to 1991 and possibly later. It was originally developed by Hannibal C. Ford of the Ford Instrument Company [1] and William Newell. It was used on a variety of ships ...
A rangekeeper is defined as an analog fire control system that performed three functions: [2] Target tracking. The rangekeeper continuously computed the current target bearing. This is a difficult task because both the target and the ship firing (generally referred to as "own ship") are moving.
The 16-inch Mark 2 was 50 calibers long, with a liner, an A tube, jacket and seven hoops with four hoop locking rings and a screw box liner. The Mod 0 used an increasing twist in the rifling while the Mod 1 used a uniform twist and a different groove pattern. The Mark 3 was the same as the Mark 2 but used a one-step conical liner.