Assurance was a 32-gun fourth-rate of the English Navy, built by Peter Pett I at Deptford Dockyard and launched in 1646.

During her time in the Commonwealth Navy she partook in the Battles of Dover, Portland, Gabbard and Texel.

[2] She was ordered in December 1645 from Deptford Dockyard to be built under the supervision of Master Shipwright Peter Pett I.

[12] At the Battle of Kentish Knock she was a member of Robert Blake's Fleet of sixty-eight ships on 28 September 1652.

She partook in the Battle of Gabbard as a member of White Squadron, Rear Division on 2/3 June 1653.

[15] This fight was followed by the Battle of Scheveningen where she was a member of White Squadron, Rear Division on 31 July 1653.

She joined Robert Blake's Fleet in the Mediterranean in August 1655 remaining with him until July 1656, when she returned home for service in the English Channel.

Samuel Pepys states in his diary that Assurance sank near Woolwich during a storm in December 1660, with the loss of twenty men.

[20] On 4 May 1661 she was under the command of John Tyrwhitt and was with the Earl of Sandwich's squadron at Tangiers, then Algiers on 31 July.

She partook in the Battle of Lowestoffe as a member of White Squadron, Center Division on 3 June 1665.

[24] She was also present in the attack on Dutch shipping in the Vlie (also known as Holmes's Bonfire) on 9/10 August 1666.

[25] In June 1667 she sailed for the West Indies with Rear Admiral John Harmon's Squadron for Martinique.