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An attack submarine or hunter-killer submarine is a submarine specifically designed for the purpose of attacking and sinking other submarines, surface combatants and merchant vessels. In the Soviet and Russian navies they were and are called "multi-purpose submarines". [ 1 ]
A hunter-killer group would typically be formed around an escort carrier to provide aerial reconnaissance and air cover, with a number of corvettes, destroyers, destroyer escorts, frigates, and/or United States Coast Guard Cutters armed with depth charges and Hedgehog anti-submarine mortars.
HMCS Chicoutimi is a Victoria-class long-range hunter-killer (SSK) submarine of the Royal Canadian Navy, originally built and operated by the Royal Navy as HMS Upholder. Shortly after being handed over by the United Kingdom to Canada she was involved in a partial flooding incident which resulted in a fire at sea.
The Americans favored aggressive hunter-killer tactics using escort carriers on search and destroy patrols, whereas the British preferred to use their escort carriers to defend the convoys directly. The American view was that defending convoys did little to reduce or contain U-boat numbers, while the British and Canadians were constrained by ...
USS Guadalcanal (CVE-60) was a Casablanca-class escort carrier of the United States Navy, which served during and after World War II. She was the first ship to carry her name. She was the flagship of Task Group 22.3, a hunter-killer group which captured the German submarine U-505 in 1944.
This allowed convoys to be diverted and hunter-killer groups to be targeted on the pack. Submarines now transmit using methods that are less susceptible to intercept. In World War II, high frequency direction finding (HF/DF or "Huff-duff) was used by Allied escort vessels to detect submarines making position or sighting reports.
HMCS Corner Brook (SSK 878) is a long-range hunter-killer submarine (SSK) of the Royal Canadian Navy. She is the former Royal Navy Upholder -class submarine HMS Ursula (S42) , purchased from the British at the end of the Cold War.
HMCS Victoria is a long-range hunter-killer (SSK) submarine of the Royal Canadian Navy, the lead ship of her class. She is named after the city of Victoria, British Columbia . She was purchased from the Royal Navy , and is the former HMS Unseen (S41) .