|Launched:||28 September 1907|
|Commissioned:||4 March 1908|
|Displacement:||1,595 gross register tons (GRT)|
|Length:||85.3 m (280 ft)|
|Beam:||16.5 m (54 ft)|
|Draught:||3.85 m (12.6 ft)|
The famous U-boat ace Max Valentiner served as salvage officer on Vulkan in early 1911. On 17 January 1911, he and the crew saved all 30 men from U-3 by getting them out of the torpedo tube after it sank near Kiel harbour in Heikendorfer Bay because of an unclosed valve in the ventilation shaft. Amongst the saved crew was Otto Weddigen, the later commander of U-9 and Paul Clarrendorf, the commander of U-boot-Abnahme-Kommando in Kiel which enlisted u-boat crews.
Vulkan was taken out of service 11 November 1918 and surrendered to the British forces together with the bigger salvage tug, SMS Cyclop. Being pulled to Harwich it was sunk 6 April 1919 in position 54°54′N 06°18′E.
- u-boot-net.de webpage about SMS Vulkan (in German)
- max-valentiner.dk webpage about Max Valentiner and salvage of U-3 in 1911 (in Danish)