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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 Mark 7 was a major step in the evolution of the modern torpedo. This innovative design featured the use of steam , generated from water sprayed into the combustion pot along with the fuel . The resulting mixture dramatically boosted the efficiency of the torpedo, leading to markedly improved performance. [3]
The Mark 7 was a variable-yield fission weapon that used a levitated pit and an implosion design with 92 high-explosive lenses. The weapon had multiple yields of 8, 19, 22, 30, 31, and 61 kt by using various weapon pits. [4] The weapon had airburst and contact fuzing modes. The weapon used in flight insertion for safing and later versions of ...
The Mark 3 Mod 1 was constructed of tube, jacket and eight hoops while Mod 2 was identical to Mod 1 but with different steps under the chase hoops. Mod 3 was, for one gun, lengthened to 40 calibers and was removed from service prior to the start of World War I. Mod 4 was, also for one gun only, different from other Mods in having a ring shrunk ...
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]
The Mark 17 torpedo was a long-range, high-speed torpedo developed by the Naval Torpedo Station in Newport, Rhode Island and the Naval Research Laboratory in 1940. Development efforts on the Mark 17 were halted in 1941 in favor of producing Mark 13 and Mark 15 torpedoes during World War II. However, detailed knowledge of the Japanese Type 93 ...
The Mod 2 were Mod 0s with a hoop added to the chase along with a cylindrical liner made from nickel-steel. With these changes the original muzzle velocity was used. [1] [2] The Mark 8 was similar to the Mark 6 Mod 1 but was constructed entirely out of nickel steel. The Mod 1 had a slightly smaller diameter chamber, but the same volume.
The Mark 49 Mod 2 warhead was cancelled partway into its development. W49 Mods 0 through 2 were internally initiated weapons but at this time it was decided that future warheads would be externally initiated. The Mod 2 requirement was replaced by the Mod 4. [6] A decision was made in November 1959 that reactor products needed to be conserved. [6]