U-DEUTSCHLAND made one more trip to America, commencing on 24th May, 1917 and ending successfully on 4th September, 1917. With America's entry into the war on the British side, the merchant submarine was no longer required, so she was armed with two 5.9 inch guns, the crew of 29 Merchant Navy seamen withdrawn and replaced with 73 naval personnel.

U-155, ex U-DEUTSCHLAND with guns mounted

As U-155, she captured the British Merchant Ship BENGUELA. The irony of this event was that the submarine was forced to make the British ship tow her a part of the way back to Germany due to a breakdown. In all, six Merchant Navy submarines were built.

The second, U-BREMEN, left Germany for Virginia and was badly damaged. She was converted to a surface vessel.

U-DEUTSCHLAND survived the war and was taken over by Britain and scrapped in 1922.

U-BOAT	BUILT	REMARKS
U-151	1917	Surrendered to France in 1918. Sunk at Cherbourg in 1921. When the US came into the war, the Merchant submarine U-OLDENBURG was the first of these boats taken over by the German Navy.
U-152	1917	Surrendered to Britain in 1918. Sank en route to ship-breakers.
U-153	1917	Surrendered to Britain in 1918. Sank en route to ship-breakers in 1921.
U-154	1917	Torpedoed by the British submarine E35 off Cape St. Vincent in 1918.
U-155	1916	Formerly U-DEUTSCHLAND; she was the first of the class; surrendered to Britain; scrapped in 1922.
U-156	1917	Mined in the North Sea in 1918.
U-157	1918	Surrendered to France in 1918; scrapped in 1921.
U-158	not	Scrapped incomplete in 1919
U-159	not	Scrapped incomplete in 1919.

There are reports that U-BREMEN was lost without any trace on her maiden voyage however, most records subscribe to the belief that she was badly damaged and converted into a surface vessel.

This is the end of the story by Alan Smith, but KTB #112 has comments by & about K.K. REINHARD HARDEGEN (102-LIFE-1985) regarding U-DEUTSCHLAND and Kapitän König.