January 1955, the submarine departed for six weeks in the Caribbean participating in operation "Springboard" and, in September, took part in NATO exercise "New Broom IV," visiting Saint John, New Brunswick, en route home to New London, where she operated locally for the remainder of the year. 1956 – 1970 After engaging in special operations in late 1956 and early 1957, Sea Robin resumed normal duties in the New London area until entering the Portsmouth Naval Shipyard on 24 July 1957 for a two-month overhaul. Upon return to New London, she engaged in fleet exercises in the Atlantic and Caribbean until 28 March 1958 when she set sail for a -month tour of duty with the 6th Fleet in the Mediterranean. From Jan - May 1963 she again conducted a tour of duty in the Mediterranean. For the next five years, with time out for regularly scheduled overhaul periods, Sea Robin operated in Atlantic and Caribbean waters, engaging in fleet antisubmarine warfare exercises and providing services to the United States Naval Submarine School. In September 1964, Sea Robin in the company of Piper participated in exercise "Master Stroke" with United States, Canadian, and British forces. During this exercise, they conducted port calls in Portsmouth, England and Rotterdam, Holland. Sea Robin returned to New London for local operations and entered Portsmouth Naval Shipyard in November for a scheduled overhaul, remaining there until April 1965. Following shakedown operations, Sea Robin, and departed New London in July for exercise with the 6th Fleet in the Mediterranean returning to New London in October. The year 1966 was spent in participation with operation "Springboard" forces in the Caribbean providing services to naval air squadrons and surface units followed by training and antisubmarine warfare (ASW) exercises in the New London area. A scheduled main battery replacement was performed at Portsmouth Naval Shipyard during the months of July and August. Sea Robin participated in Operation Springboard in the early months of 1967, and resumed normal operations upon her return to New London. On 22 May 1967, Sea Robin put to sea in company with , , and Sea Owl for a two-month tour of northern European ports stopping at Portsmouth, England; Cherbourg, France; Derry, Northern Ireland; and various Scandinavian ports. From 2 October through 1 February 1968, Sea Robin underwent overhaul at the Philadelphia Naval Shipyard and upon completion resumed normal duties in the Atlantic and Caribbean.