german type ixd2 submarines were considerably larger than the original type ixs. "u-847" had a displacement of when at the surface and while submerged. the u-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . the submarine was powered by two man m 9 v 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two mwm rs34.5s six-cylinder four-stroke diesel engines for cruising, producing a total of for use while surfaced, two siemens-schuckert 2 gu 345/34 double-acting electric motors producing a total of for use while submerged. she had two shafts and two propellers. the boat was capable of operating at depths of up to .