The Mk 65 quickstrike mine is a 2,000 pound, air-laid, all modular, influence-actuated, bottom mine. The Mk 65 is used against submarines and surface targets. The Mk 65 consists of a Mk 65 mine case, a Mk 45 safety device arming group with a Mk 2 arming device, a Mk 57 target detecting device and a Mk 7 tail assembly.