Complex sentence: HMS "Vestal" (J215) was a Royal Navy Algerine-class minesweeper launched in 1943 which saw service in the Pacific War against the Empire of Japan.
Split into simpler sentences: HMS "Vestal" (J215) was an "Algerine"-class minesweeper of the Royal Navy. She was launched in 1943 and saw service in the Pacific War against the Empire of Japan.