USS Dolphin (AGSS-555) - The U.S. Navy's Last Diesel Electric Sub
It's not easy getting into the USS Dolphin. The ladder from the hatch is just big enough for an average-size person. When one of the GM/Detroit Diesel 12V71 engines needed a new block, it had to be removed through a hole that was cut in the hull of the ship in a dry dock. View Related Article
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