Two months later, under cover of fog, the Japanese Navy was able to evacuate its base on Kiska.
And more work is needed at Kiska, where more submarines and destroyers are known to have been sunk.
The survey team aboard the Safeguard started by probing the bottom of Kiska Harbor by sonar and marking each wreck with a buoy.
They were fishing about 400 miles southwest of Kiska Island near the end of the Aleutian chain, in waters where driftnets likely would intercept salmon from North America.