HDMS Holsteen was a 60-gun ship of the line constructed for the Royal Dano-Norwegian Navy, serving as the flagship of her class, which consisted of three vessels designed by Frederik Michael Krabbe. Notably narrower than her sister ships in the Oldenborg class, Holsteen was launched and commissioned in 1775. Her early service included a voyage to Norway, where she acted as a command ship for ships laid up in Trosvik near Oslo Fjord before returning to Copenhagen in 1776. From 1776 to 1780, Holsteen undertook extended voyages to Lisbon, the Gold Coast, and Cape Town, showcasing her role in long-range naval expeditions. Upon her return, she performed guardship duties in Øresund off Copenhagen until late 1780. She also participated in the Neutrality Squadron from 1782 to 1783 and again in 1794-1795, operating in Øresund and the North Sea. Holsteen's most notable engagement occurred during the Battle of Copenhagen on 2 April 1801, where she served as a blockship and briefly as the flagship, positioned at the northern end of the Danish defensive line. She sustained damage and was forced to strike her colors to British forces. The British subsequently returned her to Britain, where she was used to transport wounded and laid up until 1802. In 1805, after repairs costing over £22,000, she was renamed Nassau and commissioned for service in the North Sea under Captain Robert Campbell. She participated in various naval actions, including capturing several Prussian vessels in 1806 and escorting convoys to Madeira in 1807. Nassau played a significant role in the second Battle of Copenhagen later that year, where she helped escort surrendered Danish ships and participated in the destruction of the last Danish ship of the line, HDMS Prinds Christian Frederik, at Zealand Point on 22 March 1808. This action resulted in casualties but cemented her reputation in the Danish fleet. Subsequently, Nassau continued operations including the capture of Danish ships Industrie and Haabet Anker in April 1808 and the capture of a French privateer lugger, Jean Bart, in September 1809. She was laid up at Chatham in September 1809, then converted into a prison ship in 1810 under Lieutenant William Field. She was eventually sold in 1814 for £2,510, marking the end of her distinguished service history.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.