SM U-106



SM U-106 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-106 was commissioned on 28 July 1917, under the command of Kapitänleutnant Hans Hufnagel, and participated in one wartime patrol starting on 2 September 1917. On 18 September 1917, during the First Battle of the Atlantic, U-106 was credited with the sinking of HMS Contest, an Acasta class destroyer, and damaging "City of Lincoln", a steamer, in the Western Approaches. She was lost off Terschelling after striking a mine on 7 October 1917.

Design
Type U 93 submarines were preceded by the shorter Type U 87 submarines. U-106 had a displacement of 798 t when at the surface and 1000 t while submerged. She had a total length of 71.55 m, a pressure hull length of 56.05 m, a beam of 6.30 m, a height of 8.25 m, and a draught of 3.90 m. The submarine was powered by two 2400 PS engines for use while surfaced, and two 1200 PS engines for use while submerged. The boat had two propeller shafts and two 1.70 m propellers. The boat was capable of operating at depths of up to 50 m.

The submarine had a maximum surface speed of 16.4 kn and a maximum submerged speed of 8.4 kn. When submerged, she could operate for 50 nmi at 5 kn; when surfaced, she could travel 9280 nmi at 8 kn. U-106 was fitted with six 50 cm torpedo tubes (four at the bow and two at the stern), twelve to sixteen torpedoes, one 10.5 cm SK L/45, and one 8.8 cm SK L/30 deck gun. She had a complement of thirty-six (thirty-two crew members and four officers).

Wreck
In 2009 the Royal Netherlands Navy found the wreckage of the ship north of Terschelling, while charting sea-routes. The news was made public in March 2011, after the ship's identity had been confirmed by German authorities and the crewmembers' families had been informed. The ship will stay in place as a wargrave.