SM U-103
SM "U-103" was an Imperial Germany Navy Type U 57 U-boat that was rammed and sunk by during the First World War. "U-103" was built by AG Weser in Bremen, launched on 9 June 1917 and commissioned 15 July 1917. She completed five tours of duty under "Kptlt." Claus Rücker and sank eight ships totalling before being lost in the English Channel on 12 May 1918. Sinking. In the early hours of 12 May 1918, the surfaced "U-103" sighted "Olympic", the older sister of , which was carrying US troops to France. The crew prepared to launch torpedoes  from her stern torpedo tubes but was unable to flood them in time before the submarine was spotted by "Olympic", whose gunners opened fire as the transport ship turned to ram. SM "U-103" started to crash dive to in an attempt to turn to a parallel course to the liner. But there was not enough time before the port propeller of "Olympic" sliced through the submarine's pressure hull just aft of its conning tower. The crew of "U-103" blew ballast tanks before scuttling their sinking submarine. Nine crewmen lost their lives. "Olympic" did not stop to pick up the  survivors but continued on to Cherbourg. later sighted a distress flare and took 35 survivors to Queenstown. Wreck. The remains of "U-103" lie at a depth of in the English Channel about midway between England and France (). Its deep location makes its largely inaccessible to divers but the wreck was surveyed and identified by a remotely operated underwater vehicle in 2012.