| Career (German Empire) | |
|---|---|
| Name: | SM U-104 |
| Ordered: | 15 September 1915 |
| Builder: | AG Weser, Bremen |
| Laid down: | 4 August 1916 |
| Launched: | 3 July 1917 |
| Commissioned: | 12 August 1917 |
| Fate: | Depth-charged and sunk 25 April 1918. 41 dead, 1 survivor. |
| General characteristics | |
| Class and type: | German Type U 57 submarine |
| Displacement: | 808 tons (surfaced) 946 tons (submerged) 1160 tons (total) |
| Length: | 70.60 m (overall) 55.55 m (pressure hull) |
| Beam: | 6.30 m (overall) 4.15 m (pressure hull) |
| Draught: | 4.02 m |
| Propulsion: | 2400 hp (surfaced) 1200 hp (submerged) |
| Speed: | 16.8 knots (surfaced) 9.1 knots (submerged) |
| Range: | 11,220 miles (surfaced) 56 miles (submerged) |
| Complement: | 39 men |
| Armament: | 16 torpedoes (4/2 in bow/stern tubes) 105mm deck gun with 220 rounds 88mm deck gun |
| Service record | |
| Part of: | Kaiserliche Marine: |
| Commanders: | Kurt Bernis |
| Operations: | 4 |
| Victories: | 8 ships sunk for a total of 10.795 tons |
SM U-104 was a German Type Mittel U U-boat during the First World War. U-104 was built at AG Weser in Bremen, launched on 3 July 1917 and commissioned on 12 August 1917. She completed four patrols under commander Kurt Bernis and was responsible for the sinking of eight vessels of a total of 10.795 gross register tons (GRT). Among these was the American lightship LV 71, stationed at Diamond Shoals; the latter reported the submarine's presence in the area, at which point Bernis notified the lightship of his intentions and allowed her crew to depart before shelling the vessel and sinking her.[1]
On 25 April 1918 the U-104 was engaged by the USS Cushing in St. George's Channel and severely damaged. Later the same day HMS Jessamine came upon her and dropped further depth-charges, sinking her and leaving but a single survivor of her 42-member crew. The wreckage lies at position .
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