March 22, 1986 off Midway Island, Pacific
USS SECOTA (YTM 415) loses power and collides with the stern planes of USS GEORGIA (SSGN-729) and sinks just after completing a personnel transfer.
The Tug pulled alongside the submarine to do a personnel transfer, and the engine died. the Submarine went hard starboard to try and sweep the stern to the left of the tug, but it was too late. Going to all stop wouldn't have done anything either, as it takes a sub a quarter mile to stop. as a result, topside procedures were changed to raise a "tug catcher" cleat near the rear of the boat in case they need to throw a line.
Ten crew are rescued, but two drown.
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