This aims to uncover connections between facial expression shifts, exercise intensity, and fatigue ranges, thereby exploring potential correlations. In March, she participated in Exercise "RIMPAC 75", which included ships from the navies of the United States, Canada, Australia, and New Zealand. She offered providers to surface ships and aircraft, carried out torpedo firing drills, and did one other tour making ready potential commanding officers for the new jobs. After conducting torpedo firing exercises, Blueback entered upkeep at Pearl Harbor. The warship ended the cruise at Pearl Harbor on 1 October and began a period of local operations and upkeep. After one other period of upkeep and liberty at Sasebo, she bought underway on the 22nd for ASW operations in cooperation with the Japanese submarine Isoshio. On 21 June, the submarine acquired underway for Santa Marta, Colombia. She acquired underway for Bremerton, Washington, on that day and entered the Puget Sound Naval Shipyard 18 days later for overhaul.
She held sea trials and weapons workouts in January 1976 and started one other lengthy overhaul on the Pearl Harbor Naval Shipyard in February. She returned to Pearl Harbor in June, where she carried out native operations till 7 September. She carried out prolonged special operations