with means for causing torpedoes to surface at end of run

Full Title

Marine torpedoes, e.g. launched by surface vessels or submarines (having additional propulsion means for movement through air F42B17/00); Sea mines having self-propulsion means (F42B12/00 takes precedence; launching means F41F; locating by use of radio or other waves G01S; automatic control of course G05D1/00; firing directors or calculators G06G) > adapted to be used for exercise purposes, e.g. indicating position or course > with means for causing torpedoes to surface at end of run

Child Classifications

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• F42B 19/40 by expelling liquid ballast
• F42B 19/42 by releasing solid ballast
• F42B 19/44 by enlarging displacement