National Affairs: Killer Sub

The Navy's newest, stealthiest killer will slide down the ways this week at the Electric Boat Co. yard in Groton, Conn. It is the Ki, pocket-size (750 tons) submarine, designed and built with one mission: to hunt and destroy other submarines. Only a little more than half as big as the Navy's fleet-type sub, the K-i's job is to lie in ambush along enemy submarine lanes, spot its prey with sonar gear, then nail the enemy with homing torpedoes equipped with electronic ears. It is one answer to the threat of Russia's big and...

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