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Israeli Mark 37E torpedo. The mod 1 torpedoes were longer, slower and heavier than mod 0, but offered better target acquisition capabilities and higher ability to intercept agile submarines. They used wire-guidance. The efficiency of Mk37 torpedoes was high for targets with speed lower than 20 knots (37 km/h) and depth less than 1,000 ft (300 m).
Mark 37 Director c1944 with Mark 12 (rectangular antenna) and Mark 22 "orange peel" Ship gun fire-control systems (GFCS) are analogue fire-control systems that were used aboard naval warships prior to modern electronic computerized systems, to control targeting of guns against surface ships, aircraft, and shore targets, with either optical or radar sighting.
This led to the development of the 10-inch/40 caliber gun. [1] The Mark 3 was specifically designed for the Tennessee-class armored cruisers, numbered in order after the Mark 1 and Mark 2s, Nos. 27–47, with No. 27 being delivered in February 1906. Nos. 27–31, 36, and 45 were all Mod 0s, with Nos. 37–44, 46, and 47 being Mod 1s.
Mark 1A Computer Mk 37 Director above the bridge of destroyer USS Cassin Young with AN/SPG-25 radar antenna. 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.
The original secondary battery consisted of 10 Mark 28, Mod 2 twin gun mounts, [23] and four Mark 37 Gun Fire Control Systems. [24] At first, this battery's effectiveness against aircraft diminished as planes became faster, but this changed toward the end of World War II through a combination of an upgrade to the Mk37 System and the development ...
The Mark 3s consisted of gun Nos. 9 – 27, 33 – 37, and 51. The production Mark 3 Mod 0 had removable trunnions, 96–97 in (2,400–2,500 mm) from the breech, 35 caliber gun that had 11 hoops with the outer hoop starting 4 inches from the breech and running out to 43.5 in (1,100 mm) from the muzzle.
Mark 43 Mod.0 US: 1951-1957: Aircraft/ submarine: Diameter:12.75 in (324 mm) Length:88.25 in (2.242 m) Weight:370.4 lb (168.0 kg) Mk.43 Mod.0 60 lb (27 kg) HBX: Electric: 20 kn (37 km/h) for 4,300 yd (3.9 km) Mark 43 Mod.1 US: 1951-1957: Aircraft/ submarine: Diameter:10 in (250 mm) Length:91.5 in (2.32 m) Weight:260 lb (120 kg) Mk.43 Mod.1 54 ...
The Mod 4 only differed from the Mark 3 in that it had a muzzle bell. Mod 5, gun No. 39, was an experimental gun that had 25 inches (640 mm) cut off of the muzzle, making it a 35-caliber gun. It also had a locking hoop that extended the whole length of the chase hoop to help balance the gun. The Mod 6 was a Mod 4 gun that had been modified for ...