project manual - Humphrey Mechanical
main ballast pump, the forward hydroplane gear, the anchor gear und accomodation for 14 men. The necessary berths ... the operating gear for torpedo -firing and periscope hoisting, a repeating compass, a tachometer and a .... Factor of safety against collapse of frame-ring (with 40 X plate thickness of shell) . .............2.40. c.
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project manual - Humphrey Mechanical's website is orzel.one.pl