What is a U 151 U-boat?

Type U 151 U-boats were a class of large, long-range submarines initially constructed during World War I to be merchant submarines and later used by the Kaiserliche Marine (Imperial German Navy).

What was the U 151 called in WW1?

On 16 December 1916, four under construction in the Reiherstieg and Flensburger Schiffbau yards were taken over by the navy and converted to military specification as Type U 151 U-boats, being designated U-151 to U-154. The remaining two, along with Deutschland, which became U-155, passed into naval control in February 1917, as U-156 and U-157.

What was the range of a U 139 U-boat?

All were armed with two 15 cm (5.9 in) SK L/45 deck guns, and carried a crew of 56. They had a cruising range of around 25,000 nautical miles (46,000 km; 29,000 mi). The success of the Type U 151 submarines led to “Project 46″, the larger Type U 139 ” U-cruisers “, designed from the outset as military submarines.