SM UB-143

SM UB-143 was a German Type UB III submarine or U-boat in the German Imperial Navy (Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 3 October 1918 as SM UB-143.

She was surrendered to Japan on 1 December 1918 and served in the Imperial Japanese Navy until 1921, when she was broken up in Yokohama.

Construction
She was built by AG Weser of Bremen and following just under a year of construction, launched at Bremen on 21 August 1918. UB-143 carried 10 torpedoes and was armed with a 10.5 cm deck gun. UB-143 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7280 nmi. UB-143 had a displacement of 523 t while surfaced and 653 t when submerged. Her engines enabled her to travel at 13.5 kn when surfaced and 7.5 kn when submerged.