On 18 January 1814 she was escorting a convoy from England to Bermuda when she encountered the French 40-gun frigates Sultane and Étoile.

[a] Later the same year, on 1 May, she captured the American privateer schooner Yankee Lass, armed with nine guns and carrying a crew of 80 men.

[10][d] In the late summer and autumn of 1814, Severn was an important participant in the War of 1812, as she was stationed in Chesapeake Bay to blockade the Patuxent River.

It was from this point that the British launched their invasion of Maryland, which led to the Battle of Bladensburg and then the subsequent burning of Washington D.C. On 2 July Severn and Loire captured two schooners, two gun-boats, and a sloop.

[13] On 20 August Severn, the frigate Hebrus, and the gun-brig Manly sailed up the Patuxent to follow the boats as far as possible.

They left at 9 o'clock on the evening of the next day and returned to Nottingham, Maryland, on the Patuxent where Cochrane boarded Manly.

[15][e][18] The draught of this class of frigate was too deep to permit Severn and her sister ships from sailing into the harbour at Baltimore.

Her sailors had to kedge rafts holding small cannon and rocket launchers seven miles up the river to Fort McHenry.

Although the navy contributed seamen and marines to the land attack, and took casualties, Severn did not suffer any losses.

Ino's crew, unaware that the war had ended on 15 February 1815, fired grapeshot and small arms at the British boats, causing them to shear off.

As a result of the attack, the Dey agreed to abolish the enslavement of Christians in perpetuity, and to free all slaves whatsoever then in Algiers.

[k] In 1847 the Admiralty issued the Naval General Service Medal with clasp "Algiers" to the 1328 surviving claimants from the battle.

[2] This article includes data released under a Creative Commons Attribution-ShareAlike 3.0 Unported UK: England & Wales Licence, by the National Maritime Museum, as part of the Warship Histories project.