12 Boats, V 150-161 (1907-08), displacement, 545 tons; speed, 30 knots; armament, two 3·4-in., two machine guns, three torpedo tubes. Complement, 83.
12 Boats, S 138-149 (1906-07), displacement, 515 tons; speed, 30 knots; armament: one 3·4-in., five smaller guns, three torpedo tubes. Complement, 80.
1 Boat, G 137 (1906), displacement, 565 tons; speed, 33 knots; armament: one 3·4-in., five smaller guns, three torpedo tubes. Complement, 80.
47 Boats, G 132-136 (1905-06), S 126-151 (1904-05), S 120-125 (1903-04), S 114-119 (1902-03), G 108-113 (1901-02), S 102-107 (1900-01), S 90-101 (1898-1900), displacement, 390-475 tons; speed, 26-27 knots; armament: three 3-pdrs., two machine, three torpedo tubes. Complement, 60.
8 Boats, D 3-10 (1887-98), displacement, 290-345 tons; speed, 22-28 knots; armament: three (or five) 3-pdrs., three torpedo tubes. Complement, 50-60.
1 Boat “Taku” (1898), displacement, 270 tons; speed, 30 knots; armament, two 3-pdrs.; two torpedo tubes. Complement, 49.
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.