Patent ID: 7874252

Claim:
A grenade for underwater application comprising: a casing; an interface section disposed within said casing having a tamper prevention device, and manually setting device, for setting at the time of grenade operation, the detonation depth from a plurality of selectable depths within a predetermined range; a depth pressure activated safe and arm logic section disposed within said casing, operatively coupled with said interface section, having sensing initial environmental conditions device, sensing subsequent environmental conditions, detecting and determining water depth via sensing of environmental pressure for both arming and firing, and determining whether a plurality of conditions for arming said grenade are satisfied; an initiating section disposed within said casing operatively coupled with said depth pressure activated safe and arm logic section, said interface section, and an explosive section; said explosive section, including an explosive charge, disposed within said casing; a power supply section disposed within said casing, operatively coupled with said initiating section, said depth pressure activated safe and arm logic section, and said interface section; said initiating section operative to arm said explosive section when predetermined conditions for arming said grenade are satisfied; and said initiating section operative to detonate said armed explosive section when said manually set detonation depth is reached.