you could try this taken from wiki,
https://en.wikipedia.org/wiki/Mark_24_mineGeneral characteristics
Diameter: 19 inches (46 cm).
Length: 84 inches (2.13 m).
Weight: 680 lb (308 kg).
Warhead: 92 lb (41.7 kg) HBX high explosive.
Propulsion: 5 hp (3.7 kW) electric motor driving a single propeller, powered by a 48 volt lead acid battery.
Speed and endurance: 12 knots for 10 minutes, giving a range of about 4,000 yards (3,700 m)
Homing system: 4 piezoelectric hydrophones operating at 24 kHz and vacuum tube signal processing system with proportional steering.
Maximum drop altitude: 200 to 300 ft (60 m to 90 m)
Maximum aircraft launch speed: 120 knots (220 km/h).
and just to pass the time here is how it works.