HMS Daedalus was a nineteenth-century warship of the Royal Navy. She was launched as a fifth-rate frigate of 46 guns of the Modified Leda class in 1826, but never commissioned in that role, being roofed over fore and aft and then laid up in Ordinary (reserve). After spending 18 years laid up in reserve, she was raséed (cut down) at Woolwich Dockyard into a corvette, reduced to 19 guns in 1844.

The Daedalus sea serpent of 1848
History
United Kingdom
Name	HMS Daedalus
Ordered	23 July 1817
Builder	Sheerness Dockyard
Laid down	November 1822
Launched	22 May 1826 (floated out)
Fate	Sold 14 September 1911
General characteristics
Class and type	Modified Leda-class frigate
Tons burthen	1082 bm
Length	150 ft 10.25 in (45.9804 m) (gundeck) 127 ft 4.5 in (38.824 m) (keel)
Beam	40 ft 3.5 in (12.281 m)
Depth of hold	12 ft 9 in (3.89 m)
Sail plan	Full-rigged ship
Complement	300
Armament	46 guns (original) Upper deck: Twenty-eight 18-pounder guns Forecastle: Two 9-pounder guns and two 32-pounder carronades Quarter deck: Eight 9-pounder guns and six 32-pounder carronades

On 6 August 1848, Captain McQuhae of Daedalus and several of his officers and crew (en route to St Helena) saw a sea serpent which was subsequently reported (and debated) in The Times. The vessel sighted what they named as an enormous serpent between the Cape of Good Hope and St Helena. The serpent was witnessed to have been swimming with four feet (1.2 m) of its head above the water and they believed that there was another sixty feet (18 m) of the creature in the sea. Captain McQuahae also reported that the creature was dark brown and had a yellowish white colour around its throat and was moving between 19 or 24 Kilometers per hour. Captain McQuahae also said that "The creature passed rapidly, but so close under our lee quarter, that had it been a man of my acquaintance I should have easily have recognised his features with the naked eye." According to seven members of the crew it remained in view for around twenty minutes. Another officer wrote that the creature was more of a lizard than a serpent. In 2015, evolutionary biologist Gary J. Galbreath contended that what the crew of Daedalus saw was a sei whale.^[1]

In 1853, Daedalus was laid up at Plymouth Dockyard. Between March and June 1851 she was fitted out as a training ship, and transferred to the Royal Naval Reserve as a drill ship at Bristol. She was finally paid off from this role in September 1910, and sold in 1911 at Bristol to take to pieces.