Hamn was a battlefield museum in Fisksätra, Nacka Municipality, near Stockholm, Sweden about the Battle of Stäket on 13 August 1719 when Russian force, circumventing Vaxholm Castle, attempted to pass through Baggensstäket, a very narrow passage in the Stockholm archipelago.

In 2003, the project “Battlefield Archaeology by Stäket” was formed, which was consented by the Swedish National Heritage Board, the County Government and Nacka Municipality.

In spring 2004 sample examinations on the southern side, by the so-called Marsh Meadow, were initiated.

During the years 2004-2010, the last five of which under the management of the Swedish National heritage Board, the battlefields were completely examined by the Baggensstäket inlet.

Today, a book project about the southern side of the Battle of Stäket with results from ten years of research, is ongoing.