German U-boat American 1918 Campaign-- Part 2: A Follow Up Attack

Encouraged by the success of the U-151, the Germans sent the U-156, U-117 and a large Type 139, U-cruisers u-140 were dispatched on similar missions, but the U.S. Navy was now ready for them, and the hunting was not as good.  The U-156 was lost with all hands on the return voyage when it is thought she must have struck a mine off Bergen, Norway, on 15 September 1918.

Another trio of long range submarines, the U-155, U-152 and U-cruiser U-139 were making their way across the Atlantic Ocean in November 1918 when the war ended and they turned back.

Cooter