The Russian Type 65, a 65-cm (25.5-in) diameter torpedo, carries a warhead of 450 kg (992 lb) of conventional explosive, or a 15-kiloton nuclear warhead – giving it slightly less explosive power than the bombs that destroyed Hiroshima and Nagasaki in 1945.

It can home in acoustically on the turbulence left in the wake of a ship more than 50 miles away and can close at more than 43.5 knots (50 mph) – far in excess of the speed of the fastest surface ships.