High Quality Content by WIKIPEDIA articles! USS Trutta (SS-421), a Tench-class submarine, was the only ship of the United States Navy to be named for the trutta, a variety of trout, distinguished from the typical trout by its small, black spots and its smaller and fewer scales. She was originally assigned the name Tomtate, often misspelled as Tomatate, and would have made her the only ship named for the tomtate, a food fish of warm American waters having a compressed body, a toothless palate, and conical jaw teeth, but was renamed Trutta on 24 September 1942. Her keel was laid down on 22 May 1944 by the Portsmouth Navy Yard. She was launched on 18 August 1944 sponsored by Mrs. Edward C. Magdeburger, and commissioned on 16 November 1944 with Commander Arthur C. Smith in command.