These two model kits were designed after original plans and photos with freecad. The PLA hull parts were produced with a Prusa MK3s, all other resin parts with a formlabs form3 3D-printer.
UB I, 25 parts: Small coastal submarine, 160 tons, 14 crew. The 20 units of these class served in the German, Austria-Hungarian and the Bulgarian Navy. Theatres of operation: Baltic and North Sea, Adriatic, Aegean and Black Sea.
See more details about this kit here.
U139, 85 parts, length over 1,2m: A class of 3 units, 3,000 tons, 80 crew. Armed with 6 torpedo tubs (20 torpedoes on board, also mines), two 15 cm and two 8.8 cm guns. U-139 cruised in the Biscay, and U-140 before the canadian and US east coast. After the war U-139 was commissioned as Halbronn into the French Navy until 1935.
See more details about this kit here.
More models are in development, you can find the information here.
A brief note about this contribution. Hans Joachim Koerver is a reputed historian as well as scale models enthusiast, with a deep knowledge in the U Boats warfare during the World War I. He manages this small line of German World War I submarines in resin, you can find all the information, details and purchase his models at http://ub1418.info. He also wrote several books about this topic, you can find them in Amazon.
He freely sent us the information and pictures, and we are happy to publish them and share.
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