Attack submarine
Submarine designed to destroy other ships
_(2009_199607-0005).jpg/500px-Onderzeeboot_Hr.Ms._Walrus_(S802)_(2009_199607-0005).jpg)
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". They are also used to protect friendly surface combatants and missile...
_returns_to_the_General_Dynamics_Electric_Boat_shipyard.jpg/500px-US_Navy_040730-N-1234E-002_PCU_Virginia_(SSN_774)_returns_to_the_General_Dynamics_Electric_Boat_shipyard.jpg)
_underway_with_Task_Group_Alfa,_in_1959_(USN_1043094).jpg/500px-USS_Valley_Forge_(CVS-45)_underway_with_Task_Group_Alfa,_in_1959_(USN_1043094).jpg)