Wassenaar was a 64-gun ship of the line of the Dutch States Navy. The order to construct the ship was given by the Admiralty of Rotterdam. The ship was commissioned in 1781.J.F. Fischer Fzn. De Delft: De dagjournalen met de complete en authentieke geschiedenis van 's Lands schip van oorlog Delft en de waarheid over de zeeslag bij Camperduin (Franeker: Van Wijnen, 1997), 135. From 1783 to 1784, Wassenaar sailed to Batavia under Captain Gerardus Oorthuis.Nieuwe Nederlandsche Jaarboeken, achttiende deel, derde stuk (Amsterdam : Erven F. Houttuyn, Leiden, P. van der Eyk en D. Vyg, 1783), 2221.
In 1795, the ship was commissioned into the Batavian Navy. On 11 October 1797 Wassenaar took part in the Battle of Camperdown under Captain Adolph Holland. Holland was killed during the battle, and his ship surrendered to . Triumph then sailed on to the centre of the battle, and when Wassenaar was fired on by a Batavian brig, the crew raised the Batavian flag again. But in the end they were captured again by the British.William Laird Clowes, The Royal Navy: A History from the Earliest Times to 1900, Volume IV (London: Chatham Publishing, 1997), 54.
As HMS Wassenaar, the ship first served as a troop ship. In February 1798 she was the flagship of Admiral Joseph Peyton in the Downs. In the years 1800-1802 she served in the Mediterranean. In her final years (1802–1815) she lay at Chatham as a powder hulk, until she was finally sold for breaking up in 1818.
References