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HMS Theseus (1786)

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Name  HMS Theseus
Ordered  11 July 1780
Fate  Broken up, 1814
Launched  25 September 1786
Beam  14 m
Namesake  Theseus
Laid down  3 September 1783
Construction started  3 September 1783
Length  52 m
Builder  Blackwall Yard
HMS Theseus (1786) httpsuploadwikimediaorgwikipediacommonsthu
Notes  Participated in Battle of Santa Cruz de Tenerife Battle of the Nile Siege of Acre. Battle of the Basque Roads

HMS Theseus was a 74-gun third-rate ship of the line of the Royal Navy.

Contents

One of the eight Culloden class ships designed by Thomas Slade, she was built at Perry, Blackwall Yard, London and launched on 25 September 1786.

Service

Theseus was the flagship of Rear Admiral Horatio Nelson's fleet for the 1797 Battle of Santa Cruz de Tenerife. Day to day command was vested in her flag captain Ralph Willett Miller. The British were soundly defeated and Nelson was wounded by a musket ball while aboard the Theseus, precipitating the amputation of his right arm.

Despite the defeat, morale and good order were retained aboard the ship. In August 1797 ship's surgeon Robert Tainsh reported a mere nine cases of illness aboard, with little incidence of scurvy and a ready supply of antiscorbutics. An outbreak of ulcers was attributed to the overuse of salted provisions and addressed by Miller's insistence on ensuring a supply of onions and lemons as part of daily rations. Also with Miller's approval, the lower deck ports were periodically washed with nitrous acid to reduce the risk of mould, windsails were installed to encourage a flow of fresh air below decks and the crew's hammocks were ordered to be aired three times a week.

Battle of the Nile

In 1798, Theseus took part in the decisive Battle of the Nile, under the command of Captain Ralph Willett Miller. The Royal Navy fleet was outnumbered, at least in firepower, by the French fleet, which boasted the 118-gun ship-of-the-line L'Orient, three 80-gun warships and nine of the popular 74-gun ships. The Royal Navy fleet in comparison had just thirteen 74-gun ships and one 50-gun fourth-rate.

During the battle Theseus, along with Goliath, assisted Alexander and Majestic, who were being attacked by a number of French warships. The French frigate Artemise surrendered to the British, with the crew setting fire to their ship to prevent it falling into the hands of the British. Two other French ships Heureux and Mercure ran aground and soon surrendered after a brief encounter with three British warships, one of which was Theseus.

The battle was a success for the Royal Navy, as well as for the career of Admiral Nelson. It cut supply lines to the French army in Egypt, whose wider objective was to threaten British India. The casualties were heavy; the French suffered over 1,700 killed, over 600 wounded and 3,000 captured. The British suffered 218 dead and 677 wounded. Nine French warships were captured and two destroyed. Two other French warships managed to escape. Theseus had five sailors killed and thirty wounded, included one officer and five Royal Marines.

Siege of Acre

Theseus played a less successful role in the 1799 Siege of Acre, under the command of Captain Ralph Willett Miller. On 13 May 1799 she reached the nearby port of Caesarea, and Miller ordered the ship readied for action in bombarding Acre the following morning. A large quantity of ammunition was brought to the deck for use by the ships guns, including more than 70 18-pound and 36-pound shells. At 9.30am on the 14th, the ammunition was accidentally ignited while the ship was under way. The resulting explosion set fire to the deck, main and mizzen masts and killed Miller and 25 other men. Another 45 crew members were injured.

Flames quickly spread between Theseus' decks, and a second detonation of ammunition stores destroyed the poop and quarterdecks and toppled the main mast over the starboard bow. A further ten men were killed before the fire was brought under control, leaving the ship unserviceable for the Acre campaign.

Later service

Four years later a refitted Theseus took part Blockade of Saint-Domingue in 1803, under Captain John Bligh. She also took part in the Battle of the Basque Roads in 1809. Lord Cochrane initiated a daring attack, led by fire ships and other explosive vessels, in an attempt to cause chaos among their target, an anchored French squadron. Many of the French ships were subsequently run aground due to the havoc that this attack caused. The enemy squadron would probably have been completely destroyed had the Commander-in-Chief, Admiral Lord Gambier, not hesitated over necessary decisions, such as to deploy the main fleet which instead lay in wait for their orders. Thus the remnants of the French escaped destruction.

Theseus was broken up at Chatham in 1814.

References

HMS Theseus (1786) Wikipedia


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