Built in 1786, Blackwall.
Broken up in 1814.
- 1796 Capt. Augustus MONGOMERY.
- 1798 Capt. Ralph Willet MILLER, Mediterranean.
THESEUS was with the squadron which joined Rear Ad. NELSON off Toulon on 7 June.
On the 12th. they sailed for Corsica in search of the French fleet then, as Egypt seemed the probable destination, they steered for Alexandria.
When no news could be had there it was back to Syracuse on 19 July.
Fortunately Capt. TROUBRIDGE learned that the French were now in Egypt and NELSON's squadron arrived there on 1 August.
THESEUS was the 5th. in line as they approached the French in Aboukir Bay.
The ARTEMIS struck her colours after receiving the fire from THESEUS but as she was about to be boarded she was seen to be burning and shortly after she blew up.
When four French line-of-battle ships dropped to leeward out of the bay, apparently to attack the disabled BELLEROPHON, THESEUS, GOLIATH and ZEALOUS were ordered to proceed to her assistance.
Taking advantage of their absence the TIMOLEON ran herself ashore.
In the battle THESEUS lost 5 killed and 30 wounded.
- THESEUS was with Sir Sidney SMITH engaged in the blockade of Alexandria when news was received of the French advance towards Acre. She was sent on ahead with the French Royalist engineer Philippeaux to organise the defence.
During the siege Capt. MILLER enjoyed collecting, re-priming and firing back, French shells which failed to explode.
Seventy such shells were being refilled with British gunpowder when a fuse, being extracted with an auger, ignited and they all exploded in the captain's fore-cabin.
Capt. MILLER and 40 seamen were killed, 47 others, including the two lieutenants, were wounded and THESEUS wrecked.
- 1800 Capt. John STILES, 06/1799, (posted from CAMELION), Mediterranean.
- 1803 Capt. John BLIGH, Jamaica.
In September Capt. Bligh, as senior officer blockading San Domingo, reported that since he had found it difficult to prevent small vessels from the little ports on the north of the island bringing in provisions he had decided to reduce Port Dauphin.
On the 8th. he bombarded the fort at the entrance until it struck then, with the assistance of the boats, and captured the SARGASSE with twenty 8-pounders on her main deck and eight 4-pounders on the quarter-deck.
- The guns in the fort were spiked and the ammunition destroyed and the garrison, fearful of the blacks, were taken into Cape Francois, together with Gen. Dumont and his staff which Capt. BLIGH rescued from their black captors.
The 6-gun-brig PAPILLON, the brig TROIS AMIS and the schooners COURIER de NANTZ, SALLY and MARY were captured at the same time.
- 1805 under repair at Chatham.
- 1807 Capt. HOPE, with Com.
Later in the year Capt. J. P. BERESFORD, off Ferrol.
- 1808 Ditto with the Channel fleet.
On 25 February 1809 THESEUS, with REVENGE, HERO, TRIUMPH and REVENGE joined Rear Ad. STOPFORD's squadron off the Chasseron lighthouse to assist in blockading the enemy fleet in the Basque Roads.
On 7 March Lord GAMBIER arrived and took command.
THESEUS took part in the attack on the French fleet on 11 and 12 April.
Richard Francis JEWERS, master's mate, was severely wounded in the head and hands by powder in one of the fire ships, a marine and Thomas WILLIAMS, boy, were also wounded.
- 1811 Capt. William PROWSE, Downs.
- 1814 Ditto off the Scheldt.