USS Grenadier (SS-525), a Tench-class submarine, was the second ship of the United States Navy to be named for the grenadier, a soft-finned deep sea fish of the Macrouridae with a long, tapering body and short, pointed tail family, also known as rattails. History Construction The contract to build Grenadier was awarded to the Boston Naval Shipyard, and her keel was laid down on 8 February 1944 in Boston, Massachusetts. She was launched on 15 December 1944 but was not christened until 10 February 1951. The seven year and two day period between keel laying and commissioning is the second longest in history for a United States Navy submarine after USS Pogy (SSN-647). She was sponsored by Mrs. John A. Fitzgerald, wife of the first Grenadier’s last commanding officer, and commissioned the same day with Commander Henry G. Reaves, Jr. in command. Early career One of the first Greater Underwater Propulsion Power Program (GUPPY) submarines, Grenadier was equipped with a snorkel to permit indefinite running in an awash condition. Grenadier proved the worth of this device during her shakedown. Returning from the Caribbean Sea cruise, the new submarine made the seven-day voyage from Guantanamo Bay to New London, Connecticut, submerged. Almost two years of intensive training exercises out of New London were capped by her first yard overhaul at Philadelphia, extending from 16 December 1952 to 22 April 1953. In June 1953 Grenadier participated in the annual midshipman cruise to Rio de Janeiro and other Brazilian ports. Returning to New London via the Caribbean Sea, she then supported ASW exercises during November, as an aircraft carrier task force perfected its antisubmarine operations. Grenadier continued training and battle exercises along the New England coast and off the Virginia Capes and in August 1955 cruised to Montreal, Quebec, via the St. Lawrence River. Grenadier departed New London 3 January 1956 on the first of several Mediterranean Sea cruises. During a three-month deployment she steamed throughout the Mediterranean and both showed the flag and participated in attack and antisubmarine exercises with various units of the Sixth Fleet. On two subsequent Mediterranean deployments from 8 November 1957 to 27 January 1958, and from 10 April to 8 August 1962 she operated with the Sixth Fleet to bolster peace keeping operations in that troubled region of the world. Between these cruises, the submarine participated in exercises along the East Coast and was a frequent visitor