From Wikipedia, the free encyclopedia.
Three ships of the United States Navy have been named USS Haddock for the haddock, a small edible Atlantic fish related to the cod.
The first Haddock (SS-32) was K-1, which saw overseas duty during World War I.
The second Haddock (SS-231), a Gato-class submarine, served during World War II.
The third Haddock (SSN-621), a Thresher-class submarine, served during the Cold War.
