Mk 24 Tigerfish

The Tigerfish is the standard heavyweight, submarine-launched torpedo of the Royal Navy. It is a wire-guided, electrically driven weapon that is stabilized and steered by the unusual combination of retractable, mid-body "wings" with ailerons and a cruciform tailplane group.

As with most wire-guided torpedoes, the Tigerfish receives its steering commands from the launching submarine during the approach phase. The on-board, active/passive acoustic homing system uses a beam-forming...