On 7 March 1975, she embarked Marines at Morehead City and headed south. After an amphibious assault exercise at Onslow Beach from 8 to 10 March, she continued south to the Caribbean. During the two-month cruise, Trenton participated in four exercises, two of which – "LantReadEx 2–76" and "Rum Punch" – were held in cooperation with units of the Royal Navy and the Royal Netherlands Navy. She returned to Norfolk on 28 April. In May, she hosted a class from the Naval War College, conducted a midshipman training cruise for the United States Naval Academy, and returned to Onslow Beach for joint service Exercise "Solid Shield." During the early summer, Trenton prepared for overhaul. On 14 August, she headed north to New York, moored at the Coastal Drydock and Repair Company on the following day, and commenced a nine-month overhaul.
