1) Submarine rocket 
(from the article `tactical weapons system`) ...uses a missile that is preprogrammed for its course on the basis of sonar information. One of the most intricate underwater systems is a ...
Subroc (US Navy designation UUM-44A) was an American submarine-borne tactical missile designed for use against other submarines. Subroc comprised a guided supersonic ballistic missile fired from a torpedo tube by a submerged submarine and had a range of about 48 km. Development of Subroc was started by Goodyear in 1958, and was first deployed on th...
SUBmarine ROCket
a rocket that contains a nuclear depth charge and that can be launched underwater from a submarine torpedo tube.