Japanese Submarine I-177
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I-177 was an Imperial Japanese Navy Kaidai-type cruiser submarine of the KD7 subclass commissioned in 1942. She served during World War II, patrolling off Australia, taking part in the New Guinea campaign, operating in the North Pacific, and participating in the Palau campaign before she was sunk by the destroyer escort USS Samuel S. Miles (DE-183) in 1944, with no survivors.
On her first war patrol she sank two ships, the second being SS Centaur an Australian Hospital Ship enroute from Sydney to Port Moresby.