Four U.S. submarinestwo streamlined snorkel types, Cochino and Tusk, and two older fleet typesleft their base at New London, Conn, six weeks ago and headed quietly into the Atlantic. A brief Navy release announced that they were off on a training cruise to Ireland and return. They reached Londonderry all right, on July 29, and left for homebut by an exceedingly circuitous route.
Last week, engaged "in oceanographic research," they were moving unobtrusively as seals through Arctic waters north and west of the Soviet base at Murmansk. One evening, just after the Cochino and...