This gave them a range of  at 10 knots while surfaced. They had a designed diving depth of . The submarines were armed with four 18-inch (450 mm) torpedo tubes in the bow for the six torpedoes they carried.
This provided them a speed of 10 knots while submerged. They had a maximum diving depth of . The submarines were equipped with four 18-inch (450 mm) torpedo tubes in the bow to launch six torpedoes.