3D Printed in Grey and Black
59 x 5.21 x 7.01mm
The UD-1 was a secret submarine project in 1918. Work started in Feb 1918 when "War contract AA" was awarded to KW Kiel for a U Cruiser of this type. In May work started in the mould-loft and work shops in great secrecy. But the keel was not laid down yet at the end of the war.
length overall 125m.
Max beam 10.5m.
displacement surfaced 3,800t
propulsion surfaced 4: 6,000 hp steam turbines, 2 450 hp diesel generators
propulsion submerged 2: 1,900 hp SSW electric motors
speed surfaced 25knots
speed submerged 9.5 knots
armament: six torpedo tubes [four submerged bow, two submerged stern]
three or four 15cm U-Boat guns