RMAS Sea Giant OS. 1955 allocated to C D Malta. 12.3.65 arrived Devonport to relieve CAREFUL. 11.7.68 reallocated to Portland to relieve ANTIC for target towing duties. 24.6.70 hit by shell from German destroyer "Schleswig-Holstein" during exercises off Portland. 4.7.80 taken out of service at Portland. 8.11.80 towed from Portland to be broken up at Gijon (Spain).