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| | Submarine - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-07) |
 | | Military submarines are generally divided into attack submarines, designed to operate against enemy ships, including other submarines, in a hunter-killer role, or strategic ballistic-missile submarines, designed to launch attacks on land-based targets from a position of stealth, also known as "boomers" in the United States Navy or "bombers" in the Royal Navy. |
 | | Midget submarines were used for sabotage and espionage, especially by the Japanese and British navies; for instance five were used by Japan in its attack on Pearl Harbor. |
 | | Submarines designed for the purpose of attacking merchant ships or other warships are known as "fast attacks", "hunter-killers", "fast boats", or "fleet submarines" (which terms are not synonyms; each is a different design for a different mission). |
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