Ordered by the Royal Navy in 1941, the destroyers of the 5th Emergency Flotilla became known as S-class and served as fleet and convoy escorts in World War II. In the last months of the war, three were transferred to the Royal Netherlands Navy for service in the Far East. HMS Serapis was renamed HNLMS Piet Hein and served in the Indonesian War of Independence and saw action in the Korean War. She was sold for scrap in 1962.