 For propulsion, she had two shafts, twin diesel engines of for surface running, and twin electric motors of for submerged travel.She was capable of while surfaced and while submerged.Although there is no specific notation of a range for "U-29" in "Conway's All the World's Fighting Ships, 1906–1921", the German UB II boats, upon which the "U-27" class was based, had a range of over at surfaced, and at submerged.