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The torpedoes used Mark 46 silver oxide batteries. These had a known tendency to overheat, occasionally igniting or exploding. Training torpedoes used rechargeable secondary batteries. For a long time, the Mark 37 was a primary U.S. submarine-launched ASW torpedo. It was replaced by the Mark 48 starting in 1972. The remaining inventory was then ...
Mark 30 torpedo mine ... Mark 37 (Mod.0 & Mod.3) US ... Seawater battery: Mark 45 Mod.0
The Mark 33 was used as the main director on some destroyers and as secondary battery / anti-aircraft director on larger ships (i.e. in the same role as the later Mark 37). The guns controlled by it were typically 5 inch weapons: the 5-inch/25 or 5-inch/38 .
These included the Mark 14, Mark 23, Mark 32, Mark 34, Mark 37, Mark 44, and Mark 46. Additionally, US Navy rocket-boosted torpedo systems were imported, such as the ASROC and VL-ASROC . [ 2 ] This page presently only lists weapons which were indigenously produced in Japan, including both original designs and locally manufactured foreign designs.
However, while Mark 46 batteries have been known to generate so much heat that the torpedo casings blistered, none are known to have damaged a boat or caused an explosion. [ 32 ] Craven mentions that he did not work on the Mark 37 torpedo's propulsion system and became aware of the possibility of a battery explosion only 20 years after the loss ...
The Mark 48 was initially developed as REsearch TORpedo Concept II (RETORC II), one of several weapons recommended for implementation by Project Nobska, a 1956 summer study on submarine warfare. [9] The Mk-48 torpedo was designed at the end of the 1960s to keep up with the advances in Soviet submarine technology.
The Type 55 designation was given to a lengthened and modified version of the American Mark 37 torpedo manufactured in Japan, which in turn was designated as the Mark 37-0-N (Mark 37 Mod 0, the version without wire guidance). [41] Other variants of the Mark 37 were imported, not manufactured domestically. The Mark 37 remained in service until 1987.
The battery has three torpedo tunnels which could fire six torpedoes without reloading and a total of nine torpedoes was stored and ready for use. [6] Each weapon carried a 100 kg TNT warhead [ 7 ] and targets were spotted from three observation bunkers just above the battery. [ 4 ]