HMS Cumberland was a 74-gun third rate ship of the line

Ship of the line

A ship of the line was a type of naval warship constructed from the 17th through the mid-19th century to take part in the naval tactic known as the line of battle, in which two columns of opposing warships would manoeuvre to bring the greatest weight of broadside guns to bear...

 of the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

, launched on 19 August 1807 at Northfleet

Northfleet

Northfleet is a town in the Borough of Gravesham in Kent, England. Its name is derived from North creek , and the settlement on the shore of the River Thames adjacent to Gravesend was known as Norfluet in the Domesday Book, and Northflet in 1201...

.

She was converted to serve as a prison ship

Prison ship

A prison ship, historically sometimes called a prison hulk, is a vessel used as a prison, often to hold convicts awaiting transportation to penal colonies. This practice was popular with the British government in the 18th and 19th centuries....

in 1830. She was renamed Fortitude in 1833.
During the Napoleonic wars she brought King William I of the Netherlands from London to The Netherlands.

She was eventually sold out of the service in 1870.