The USS Silversides submarine sank 23 ships during World War II. It was also the site of a successful emergency appendectomy in enemy waters.

A Seattle couple restores historic vessels, including the Air Snipe, a WWII submarine chaser, donated to them in 2023. #k5evening ...

By the war’s end, 28 submarines had been built in Manitowoc, each destined for dangerous missions thousands of miles away.