My Mission
 

    To share some memories, photos and inspire others to join THE SILENT SERVICE. The time I served in the NAVY was the most educational, exciting and thrilling time of my younger life. It all started with boot camp....
 
 
   This site is dedicated to all the servicemen who served on board the USS GRAMPUS during 1949 to 1972, at which time it was decommissioned and sold to the Brazilian government.
 
    The following corrected information was downloaded from website at:
 
   http://www.navsource.org/archives/08/08523.htm
 
 
    A Tench Class Submarine: Keel laid down, 8 February 1944, at Boston Navy Yard, Boston, MA.; Launched, 16 December 1944;Commissioned USS Grampus (SS-523), 26 October 1949; Decommissioned, and simultaneously struck from the Naval Register, 13 May 1972; Transferred (sold) under the Security Assistance Program to Brazil; renamed Rio Grandedo Sul.
 
 
    Specifications: Displacement, Surfaced: 1,570 t., Submerged: 2,414 t.; Length 311' 8"; Beam 27' 4"; Draft 15' 3"; Speed, Surfaced 20.25 kts, Submerged 8.75 kts; Cruising Range, 11,000 miles surfaced at 10kts; Submerged Endurance, 48 hours at 2kts; Operating Depth, 400 ft; Complement 7 Officers, 69 Enlisted; Armament, ten 21" torpedo tubes, six forward, four aft, 24 torpedoes; Patrol Endurance 75 days; Propulsion, diesel-electric reduction gear with four main generator motors, The Grampus had 4 Fairbanks-Morse 38D 8 1/8 engines. These engines were 10 cyl opposed piston in-line 2-cycle engines. They were rated at 1600 HP at 720 rpm emergency power and 1280 HP at 650 rpm normal continuous operation. Fuel Capacity, 113,510 gal., Elliot electric motors, HP 2,740, two 252-cell main storage batteries, two propellers.
 
 
    With new "snorkeling equipment," which permitted her to remain submerged for periods far longer than the World War II fleet-class boats, Grampus served as a prototype for the post-war "Guppy" class diesel-electric submarines. Attached to Submarine Squadron 6 at Norfolk, the boat helped train and familiarize surface navy anti-submarine warfare (ASW) forces with fast underwater submarines, that being the main naval threat posed by the Soviet Union during the Cold War. These exercises took place primarily off the East Coast and in the Caribbean and included torpedo attack exercises, snorkeling tests and demonstrations, and tactical ASW training. Grampus also helped develop early HUK (Hunter-Killer) antisubmarine patrol doctrine in support of Pacific and Atlantic Fleet overseas deployments.
 
 
    From 5 January to 2 April 1955 Grampus proceeded independently to the Mediterranean, where she "showed the flag" at Algiers, Naples, Barcelona, Malta, Beirut, Monaco, and Gibraltar before returning to Norfolk and her routine of exercises and tests, spaced with regular overhauls at Portsmouth and Philadelphia.
 
 
    In addition to North Atlantic and Arctic training exercises with Task Group "Alfa" in the late 1950s and early 1960s, Grampus conducted a second Mediterranean deployment with the 6th Fleet in the Mediterranean Sea between 3 April and 3 August 1964. After receiving an overhaul at the Philadelphia Naval Shipyard in mid-1965, Grampus made several deployments to the West Indies to test equipment for the nuclear-powered submarine program and test new tactics and doctrine.    
 
 
                                ** To view a 360 degree virtual view of the USS Pampanito (SS-383), press "USS Pampanito" link above.**
 

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