USS Mackerel
USS Mackerel may refer to:
- USS Mackerel (SS-204), was a Mackerel-class submarine launched 28 September 1940 and served as a training submarine during World War II
- USS Mackerel (SST-1), was a T-1-class submarine launched 17 July 1953, and served as a training and testing submarine until 1978
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- Set indices on ships
- United States Navy ship names