Bremer Vulkan AG was a prominent German shipbuilding company located at the Weser river in Bremen-Vegesack.

Six slips equipped with modern electric travelling cranes were capable of building the largest vessels of that time.

In cooperation and under licence from MAN the Bremer Vulkan started the production of diesel ship-engines.

The Vulkan facility was several times target of the bombing of Bremen in World War II.

During the war about 10 kilometres (6.2 mi) downstream from the BV-shipyard between the Bremen suburbs Rekum [de; nds] and Farge the submarine bunker Valentin was under construction.

Here under management of the BV and beginning end of 1945 monthly 15 U-boats should be assembled from prefabricated sections.

The building itself still exists today and is partly used as a memorial to the many forced labourers from nearby concentration camps who worked and died there during construction of the bunker.

After 1996 bankruptcy because of financial problems and mismanagement, Bremer Vulkan closed the shipyard in Vegesack in 1997.