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USS GRAMPUS (SS-523) - a Tench-class submarine

In Commission 1949 to 1972

SS-523 Deployments - Major Events

Add a SS-523 Shellback Initiation Add a SS-523 Deployment - Major Event
Month Year to Month Year Deployment / Event
FEB 1944 - Keel Date: 8 FEB 1944
at Boston Navy Yard
DEC 1944 - Launch Date: 15 DEC 1944
OCT 1949 - Commissioned: 26 OCT 1949
JAN 1955 - APR 1955 Mediterranean
APR 1955 - JUL 1955 Regular Overhaul
SEP 1956 - FEB 1957 Dry Dock
JUN 1962 - DEC 1962 Dry Dock
JAN 1963 - FEB 1963 Caribbean
APR 1963 - AUG 1963 Mediterranean
JAN 1965 - FEB 1965 Caribbean
JUN 1965 - NOV 1965 Dry Dock
MAY 1966 - SEP 1966 North Atlantic
JUN 1968 - DEC 1968 UNITAS
AUG 1969 - Shellback Initiation - 16 AUG 1969 - Pacific Ocean
AUG 1969 - DEC 1969 UNITAS
AUG 1969 - Shellback Initiation - 16 AUG 1969 - Pacific Ocean
MAY 1972 - Decommissioned: 13 MAY 1972

SS-523 General Specifications

Class: Tench-class submarine

Complement: 10 Officers and 75 Enlisted

Displacement: 1870 tons

Length: 307 feet

Beam: 27 feet 4 inches

Draft: 17 feet

Range: 15 000 Nautical Miles

Final Disposition: Transferred to Brazil 13 May 1972


Built at the Naval Shipyard Boston Grampus (SS-523) was begun in 1944 but left uncompleted at the end of the war. Construction was resumed in 1948 and Grampus launched [Vol. IV errata: was christened] 26 October 1949 Mrs. Clark H. Woodward who also sponsored the previous Grampus sponsor. She commissioned the same day Comdr. George F. Sharp in command.

With her new snorkeling equipment which permitted her to remain submerged for periods far longer than the World War II fleet class ships Grampus served as a prototype for the "Guppy" class submarines and also incorporated many features to appear later in nuclear submarines. Attached to SubDiv 61 at Norfolk she has participated in a variety of exercises along the East Coast and in the Caribbean including torpedo and attack exercises snorkeling tests and demonstrations and antisubmarine training. Grampus also did a great deal of work with the early HUK (Hunter-Killer) antisubmarine patrols now a vital part of American defenses to whose development she greatly contributed.

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. During the late 1950's and early 1960's Grampus operated out of Norfolk in the North Atlantic.

Under the command of Lt. Comdr. D. A. Kilmer Grampus sailed with Task Force "Alfa" for 6 weeks prior to 13 February 1964. On 3 April she deployed with the 6th Fleet in the Mediterranean Sea until 3 August.

She operated out of the Virginia Capes until entering Philadelphia Naval Shipyard in mid-April 1965 for overhaul. After refresher training and shakedown in the fall Grampus operated along the East Coast engaging primarily in ASW exercises.

She departed Norfolk 13 May 1966 for the eastern Atlantic and Northern European countries to participate in NATO ASW exercises. Back in Norfolk 30 August she resumed operations in the Virginia Capes area and Caribbean until sailing 29 December to Philadelphia for repairs in the naval shipyard. Shipshape again she resumed operations with the Atlantic Fleet.

[Note: The above USS GRAMPUS (SS-523) history may or may not contain text provided by crew members of the USS GRAMPUS (SS-523) or by other non-crew members and text from the Dictionary of American Naval Fighting Ships]