Anti-Submarine Warfare (ASW) School had its humble origin in 1941 when an Anti-Submarine School was set up on the ramparts of the Castle Barracks in Bombay. A Torpedo School, which was established initially at Naval Dockyard, Bombay in December 1941 and shifted to Rozi near Jamnagar, was commissioned as HMIS Valsura. The Anti-Submarine School was also shifted to HMIS Machlimar at Bersova, a suburb of Bombay. Anti Submarine School was the first to shift to Kochi in 1946 closely followed by Torpedo School from Valsura. The combined school named as the Torpedo Anti-Submarine School was shifted to its present location in November 1955 and renamed as Anti Submarine Warfare (ASW) School on October 1, 1985.

The ASW School is involved in training officers and sailors of the Indian Navy. The curriculum includes an advanced study in under-water acoustics, modern sensors and weapons, ASW tactics and mine counter measures (MCM). The school also conducts training to officers and sailors of friendly foreign countries. Officers from Bangladesh, Ghana, Indonesia, Malaysia, Philippines, Seychelles, Singapore, Sri Lanka, South Africa and UAE have passed through the portals of this school.

The school is well-equipped with live equipment, weapons and simulators for training. Computers are used extensively in training to meet the technological advancements. The school has a fully equipped computer lab with the important sections being connected by a LAN. In keeping pace with the changing scenario, the school endeavours to train personnel in the art of anti-submarine warfare with the motto : to seek, to classify, to destroy.