Ratcliff-built ships

Newcastle was a 44-gun fourth-rate frigate of the English Royal Navy, originally built for the Commonwealth of England by Phineas Pett the Younger at Ratcliffe, and launched in May 1653. By 1677 her armament had been increased to 54 guns.

HMS Centurion was one of six 40-gun fourth-rate frigates, built for the Commonwealth of England under the 1650 Programme, she would be transferred to the navy of the Kingdom of England upon the Restoration of the monarchy in May 1660. When commissioned she partook in the First Anglo-Dutch War. After the first war ended she was in the Mediterranean fighting the Algerines at the Battle of Santa Cruz. She fought the battles of Dover, Portland, the Gabbard, and Scheveningen. During the Second Anglo-Dutch War she partook in the battles of Lowestoft and Orfordness. Following the second war she spent her time either in North America or the Mediterranean. She was wrecked in a storm in December 1689.

Constant Warwick was originally a 32-gun privateer, built in 1645 as a private venture between the Earl of Warwick and Sir William Batten and intended to operate as a privateer. Hired for service in the Parliamentarian navy during the First English Civil War, her captain William Batten defected to the Royalists during the 1648 Second English Civil War. After her crew mutinied in November 1648, she returned to England and was purchased by Parliament for the Commonwealth Navy on 20 January 1649.