1945-1991: Cold War world Wiki
Mark 24 Tigerfish torpedo.
Category. Data.
Type. Conventional Cold War Torpedo.
Nationality. British.
Made in. 1979.
Retired. 2004.
Designer. Marconi Underwater Systems Ltd (Mod 2 Variant).
Manufacturer. Marconi Underwater Systems Ltd (Mod 2 Variant).
Variants. .2
Diameter. 21 inches.
Speed. 35-knot (65 km/h; 40 mph).
Warhead. 134 to 340 kg (295 to 750 lb) of Torpex
Operational range. (Maximum range) 39 km (21 nmi) at low speed and 13 km (7 nmi) at high speed
Guidance system. Wire-guided to point of passive sonar target acquisition and passive terminal homing sonar. Option of using active acquisition and homing.
Launch platform. Submarine.
Weight. N\A, but probably akin to those of comparable role, configuration and era.
Sources. https://www.wikiwand.com/en/British_21_inch_torpedo and https://www.wikiwand.com/en/Tigerfish_(torpedo)

A Mark 24 Tigerfish torpedo, Gosport navel Museum, UK in 2005.