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Vanilla · 12-21-10, 05:27 AM

The Royal Navy Type D depth charge was designated the Mark VII by 1939. ... New hydrostatic fuzes increased the maximum detonation depth to 900 feet. The Mark VII's 290 pound (130 kg) Amatol charge was estimated capable of splitting a 7/8-inch (22 mm) submarine pressure hull at a distance of 20 feet (6.1 m), and forcing the submarine to surface at twice that distance.Change of explosive to Torpex (or Minol) at the end of 1942 was estimated to increase those distances to 26 feet and 52 feet (7.9 m and 15.8 m).

12-21-10, 05:27 AM	#4
Vanilla Lieutenant Join Date: Nov 2006 Location: St. Petersburg, Russia Posts: 264 Downloads: 72 Uploads: 0	The Royal Navy Type D depth charge was designated the Mark VII by 1939. ... New hydrostatic fuzes increased the maximum detonation depth to 900 feet. The Mark VII's 290 pound (130 kg) Amatol charge was estimated capable of splitting a 7/8-inch (22 mm) submarine pressure hull at a distance of 20 feet (6.1 m), and forcing the submarine to surface at twice that distance.Change of explosive to Torpex (or Minol) at the end of 1942 was estimated to increase those distances to 26 feet and 52 feet (7.9 m and 15.8 m).