The second Notable (MSO-460) was laid down 8 June 1953 by Higgins Inc., New Orleans, La., Iaunched
15 October 1954 sponsored by Mrs. deLesseps G. Morrison, wife of the Mayor of New Orleans; and commissioned 8 June 1955, Lt.
John E. Murdock in command.
Following shakedown out of Charleston, S.C., Notable served as training ship for the Navy School
of Mine Warfare, Norfolk, Va. Returning to Charleston 18 November 1955, the minesweeper operated with the 2nd Fleet in the
Western Atlantic for the next two years, and then, on 9 January 1958, deployed to the Mediterranan for a six months cruise
with the 6th Fleet, returning 23 June. Temporarily assigned to the Loran "B" Experimental Development Force in October and
November 1958, Notable operated off the east coast until 18 September 1959 when she entered Norfolk Navy Yard for overhaul.
Engaging in Atlantic amphibious exercises in early 1960, and her second six months deployment to
the Mediterranean, the ship departed Charleston in January 1961 for minesweeping exercises and a Caribbean cruise. Calling
at ports in the Virgin Islands and the British West Indies, Notable sailed to Cape Canaveral in April to assist Project Mercury
Forces in the launching of America's first man in space, Lt. Comdr. Alan B. Shepard USN. For the remainder of the year, the
minesweeper operated off Florida, overhauling at Jacksonville from July to October and deploying 6 January 1962 for another
Caribbean cruise. She returned to Charleston 1 May, and operated off the Atlantic coast, patrolling during the Cuban Missile
Crisis in November 1962. On 17 September 1963 Notable, in company with other ships of Mine Division 85, departed Charleston
for the Mediterranean.
The minesweeper returned to Charleston 1 March 1964 and on completion of overhaul, commenced training
operations with various mine warfare units. She deployed to the Caribhean 11 September to 6 November, and after operations
off the east coast, departed Charleston 24 January 1966 for her fourth Mediterranean deployment. Arriving Rota, Spain, 21
February, the ship was immediately ordered to participate in the search for a nuclear bomb lost in an air collision off Palomares,
Spain. The minesweeper remained on this duty until salvage was completed 30 March. She then made goodwill visits to ports
in Italy and France, and participated in intensive amphibious training until returning to Charleston 14 July.
Notable sailed 19 September for extensive minesweeping exercises off New England. This operation
was immediately followed by a cruise to Puerto Rieo where she joined other 2nd Fleet ships in "LantFlex66", a full-scale mock
invasion of Vieques Island. The minesweeper returned to Charleston 15 December and operated out of there for the next year.
