MTU Friedrichshafen
The "Dolphin"s are equipped with three V-16 396 SE 84 diesel engines built by MTU Friedrichshafen (now Tognum), developing sustained power. The submarines are equipped with three Siemens 750kW alternators, and a Siemens 2.85MW sustained-power motor driving a single shaft. The propulsion system provides a speed of submerged and a snorkeling speed of . The hull is rated for dives up to . The maximum unrefuelled range is traveling on the surface at and over at submerged; they are designed to remain unsupplied for up to 30 days on station.