- USS Trigger (SS-564)
USS "Trigger" (SS-564), a "Tang"-class
submarine , was the second ship of theUnited States Navy to be named for thetriggerfish , any of numerous deep-bodied fishes of warm seas having an anterior dorsal fin with two or three stout erectile spines.Her keel was laid down on
24 February 1949 atGroton, Connecticut , by theElectric Boat Company. She was launched on14 June 1951 sponsored by Mrs.Roy S. Benson , and commissioned on31 March 1952 with CommanderEdward L. Beach in command.History
Following shakedown training off
Rio de Janeiro ,Brazil , the attack submarine returned to her home port, New London, Conn., and participated in local operations for the remainder of the year. She was back in theCaribbean Sea in February, returned to New London on28 March , and continued East Coast operations until16 August 1957 . She then joinedsubmarine "Nautilus" (SSN-571) and proceeded to theArctic Ocean . The submarine spent ten days at the ice pack in the northGreenland Sea and made several short trips under the ice pack. From16 September to1 October , she participated in theNorth Atlantic Treaty Organisation (NATO) Operation "Strikeback". She then called at Portland,England andLe Havre ,France , en route back to New London to resume normal operations.On
14 January 1958 , "Trigger" entered thePortsmouth Naval Shipyard inKittery, Maine for major alterations. Her four troublesome high-speed diesel engines were replaced by three reliable medium-speed engines. The submarine was cut in two and lengthened by nine feet to accommodate the large, easier-to-maintain engines. On15 August , she got underway for New London and refresher training. She stood out of New London on2 February 1959 for extended operations in the North Atlantic. She called atFaslane ,Scotland , and returned to her home port in late April.On
1 August , "Trigger" joinedSubmarine Squadron 4 (SubRon 4) at Charleston, S.C. her new home port and, in late September and early October, participated in NATO Exercise "Fishplay". The submarine conducted operations out of Charleston for the next decade. She was deployed to6 August Fleet in the Mediterranean during the periods:10 April to6 August 1962 ;7 July to29 October 1966 ; and7 October 1969 to2 February 1970 . From6 January to6 August 1964 , she underwent modifications in connection with the SUBSAFE program; and, from3 January 1968 to6 June 1969 , her hull was again lengthened to accommodate the PUFFSsonar equipment.On
10 August 1970 , "Trigger" departed Charleston for the west coast and assignment to the Pacific Fleet. She called atMontego Bay ,Rodman , andAcapulco en route, and arrived atSan Diego, California , her new home port, on6 September to join SubRon 3. On18 November , the submarine got underway forBangor, Washington , to spend a month testing theMark 48 torpedo . From3 March to7 June 1971 , "Trigger" returned to Bangor to participate in Mk 48 Torpedo Selection Test Plan operations. Following yard work at theHunter's Point Naval Shipyard from July 1971 to April 1972, she made a voyage to theNanoose Bay Acoustic Test Range and returned to San Diego on25 May .On
17 October , "Trigger" stood out to sea on her first WestPac deployment. She called atChristmas Island on31 October and arrived atAuckland, New Zealand , on10 November . The operational control of "Trigger" was shifted to the Commander, Seventh Fleet; and she participated in Exercise "Longex 7," a combined fleet problem utilizing ships from the navies of theUnited States ,New Zealand ,Canada , andAustralia . The submarine departedAuckland on1 December and arrived at Subic Bay on18 December . From29 December 1972 until25 January 1973 , "Trigger" was underway conducting special submarine operations. She left thePhilippines on3 February and, after calling atHong Kong , participated in a joint United States-Canadian exercise offTaiwan . The ship sailed forYokosuka on20 February and remained in Japan undergoing repairs until getting underway for theUnited States on16 March .The
submarine arrived atSan Diego, California , on5 April . On25 June , she started training a crew of the "Marina Militare " to operate the ship. "Trigger" was decommissioned and transferred toItaly on10 July 1973 . She was struck from theNaval Vessel Register on2 July 1973 ."Livio Piomarta" (S-515)
Ex-"Trigger" served as "Livio Piomarta" (S-515) until it was decommissioned on
28 February 1986 .See also
See USS "Trigger" for other ships of the same name.
References
This article includes information collected from the "
Dictionary of American Naval Fighting Ships ".External links
* [http://history.navy.mil/danfs/t8/trigger-ii.htm history.navy.mil: USS "Trigger"]
* [http://www.navsource.org/archives/08/08564.htm navsource.org: USS "Trigger"]
* [http://ss564.org ss564.org: USS "Trigger" Organization]
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