OP-831 July 1944
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Ordnance Pamphlet 831 (First Revision) describes the Depth Charge Projector Mark 6 Mod 1 and Mod 2 and gives instructions for its use and maintenance. This projector takes the place of the older "Y" gun type projector.
What They Are
Depth Charge Projectors Mk 6 Mod 1 and Mod 2 are weapons for projecting depth charges. The projectors consist of a base with an expansion chamber and two tubular extensions, one serving as a mount for the steel barrel of the projector, and the other serving as a cartridge chamber with a breech mechanism mounted thereon.
The primary purpose of these weapons is to project depth charges to port and starboard of vessels in order to enlarge and supplement the pattern obtained by charges dropped from the stern.
How They Work
When the propellant charge in the cartridge case chamber is fired, either electrically or percussively, the arbor with a depth charge secured to it is forced from the projector barrel. The arbors are mechanically released from the depth charges, and the two fall into the sea independently.
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