SUBMARINES.
2 Boats, U 1 and U 2 (1906-08), displacement, 197-236 tons; speeds, 8-10 knots; armament, two torpedo tubes.
6 Boats, U 3-U 8 (1908-11), displacement, 240-300 tons; speeds, 8-12 knots; armament, two torpedo tubes.
12 Boats, U 9-U 20 (1910-12), displacement, 450 tons; speeds, 9-15 knots; armament, three torpedo tubes.
16 Boats, U 21-U 36 (1912-14), displacement, 800 tons; speeds, 18-12 knots; armament: two guns, four (or five) torpedo tubes.
MINELAYERS.
“Nautilus” (1906), displacement, 1,900 tons; speed, 20 knots; armament, eight 3·4-in., 400 naval mines.
“Albatross” (1907), displacement, 2,120 tons; speed, 20 knots; armament: eight 3·4-in., 400 naval mines.
“Pelikan” (1890), displacement, 2,300 tons; speed, 15 knots; armament: four 3·4-in., 300 naval mines.