Type UB
Type UB I
UB 1 to UB 17 = 17 U-boats
Single hull coastal submarines
Note: UB 1 was transferred via railway transport to Pola Naval Base and was handed over to the Imperial and Royal Austrian-Hungarian Navy to be recommisioned by that navy as U 10 in 1915 and operated in the Mediterranean.
| Yearof construction | 1915 |
| Shipyard | UB 1 to UB 8 at Germaniawerft at Kiel UB 9 to UB 17 at AG Weser at Bremen |
| Displacement | 127 t / 142 t submerged |
| Length | UB 1 to UB 8 = 28,1 m, UB 9 to UB 17 = 27,9 m |
| Beam | 3.2 m |
| Draught | 3.0 m |
| Propulsion | 1 diesel engine, 1 electric engine, 1 propeller |
| Engine power | 60 HP/ 120 HP |
| Speed | 6.5 kn/5.5 kn submerged |
| Range | UB 1 to UB 8 = 1,650 nm at 5 kn / 45 nm at 4 kn submerged UB 9 to UB 17 = 1,500 nm at 5 kn / 45 nm at 4 kn submerged |
| Diving depth | 50 m |
| Fuel | 3.0 cbm to 3.5 cbm |
| Armament | 2 bow torpedo tubes, 2 torpedoes, UB 14 after 1917 = 1 x 3 cm MG, UB 12 after 1917: 4 mine laying tubes for 8 mines replacing the torpedo tubes |
| Complement | 14 |
Typ UB II
UB 18 to UB 47 = 30 U-boats
Single hull coastal submarines with saddle tanks
Note: In 1917 two more German U-boats were transferred to the Imperial and Royas Austrian-Hungarian Navy. UB 43 as U 43 and UB 47 as U 47 to operate in the Mediterranean.
| Yearof construction | 1915 / 1916 |
| Shipyard | UB 18 to UB 23 and UB 30 to UB 41 at Blohm & Voss at Hamburg UB 24 to UB 29 and UB 42 to UB 47 at AG Weser at Bremen |
| Displacement | UB 18 to UB 23 = 263 t / 292 t submerged, UB 24 to UB 29 = 265 t / 291 t submerged, UB 30 to UB 41 = 274 t / 303 t submerged, UB 42 to UB 77 = 279 t / 305 t submerged |
| Length | UB 18 to UB 23 = 36.1 m, UB 24 to UB 29 = 36.1 m, UB 30 to UB 41 = 36.9 m, UB 42 to UB 47 = 36.9 m |
| Beam | 4.4 m |
| Draught | 3.8 m |
| Propulsion | 2 diesel engines, 2 electric engines, 2 propellers |
| Engine power | UB 18 to UB 23 = 284 HP / 280 HP submerged, UB 24 to UB 29 = 270 HP / 280 HP submerged, UB 30 to UB 41 = 270 HP / 280 HP submerged, UB 42 to UB 47 = 284 HP / 280 HP submerged |
| Speed | UB 18 to UB 23 = 9.2 kn/5.8 kn submerged, UB 24 to UB 29 =8.9 kn/5.7 kn submerged, UB 30 to UB 41 = 9.0 kn/5.7 kn submerged, UB 42 to UB 47 = 8.8 kn/6.2 kn submerged |
| Range | UB 18 to UB 23 = 6,650 nm at 5 kn / 45 nm at 4 kn submerged, UB 24 to UB 29 = 6,500 nm at 5 kn / 45 nm at 4 kn submerged, UB 30 to UB 41 = 7,030 nm at 5 kn / 45 nm at 4 kn submerged, UB 42 to UB 47 = 6,940 nm at 5 kn / 45 nm at 4 kn submerged |
| Diving depth | 50 m |
| Fuel | 30 cbm to 45 cbm |
| Armament | 2 bow torpedo tubes, 2-6 torpedoes, UB 21, UB 22, UB 27, UB 34 and UB 41 additionallsy 2 topedo delivery devices on each side of the conning tower, 1 x 5 cm oder 1 x 8.8 cm gun |
| Complement | 23 |
Typ UB III
UB 38 to UB 149 = 89 U-boats
Double Hull submarines, operating in extended coastal waters
Note: Many of these boats operated in the Mediterranean in cooperation with the Imperial and Royal Austrian-Hungarian Navy at it´s naval base at Pola.
| Yearof construction | 1917 / 1918 |
| Shipyard | UB 48 to UB 53, UB 75 to UB 79 and UB 103 to UB 117 at Blohm & Voss at Hamburg UB 54 to UB 59, UB 80 to UB 87, UB 118 to UB 132, UB 142 and UB 143, UB 148 and UB 149 at AG Weser at Bremen UB 60 to UB 65, UB 72 to UB 74 and UB 88 to UB 102 at Vulcan-Werft at Hamburg UB 66 to UB 71 at Germaniawerft at Kiel |
| Displacement | UB 48 to UB 53 = 516 t / 651 t submerged, UB 54 to UB 59 = 516 t / 646 t submerged, UB 60 to UB 65 = 508 t / 639 t submerged, UB 66 to UB 71 = 513 t / 647 t submerged, UB 72 to UB 74 = 508 t / 639 t submerged, UB 75 to UB 79 = 516 t / 648 t submerged, UB 80 to UB 87 = 516 t / 647 t submerged, UB 88 to UB 102 = 510 t / 640 t submerged, UB 103 to UB 117 = 519 t / 649 t submerged, UB 118 to UB 132 = 512 t / 643 t submerged, UB 142, UB 143 and UB 148, UB 149 = 523 t / 653 t submerged |
| Length | 55.3 m to 55.9 m |
| Beam | 5.8 m |
| Draught | 3.7 m to 3.8 m |
| Propulsion | 2 diesel engines, 2 electric engines, 2 propellers |
| Engine power | 1,060 HP to 1,100 HP / 788 HP submerged |
| Speed | 13.0 to 13.9 kn / 7.4 to 8.0 kn submerged |
| Range | UB 48 to UB 53 = 9,040 nm at 6 kn / 55 nm at 4 kn submerged, UB 54 to UB 59 = 9,020 nm at 6 kn / 55 nm at 5 kn submerged, UB 60 to UB 65 = 8,420 nm at 8 kn / 55 nm at 5 kn submerged, UB 66 to UB 71 = 9,090 nm at 8 kn / 55 nm at 5 kn submerged, UB 72 to UB 74 = 8,420 nm at 6 kn / 55 nm at 4 kn submerged, UB 75 to UB 79 = 8,680 nm at 6 kn / 55 nm at 4 kn submerged, UB 80 to UB 87 = 8,180 nm at 6 kn / 55 nm at 4 kn submerged, UB 88 to UB 102 = 7,120 nm at 6 kn / 55 nm at 4 kn submerged, UB 103 to UB 117 = 7,420 nm at 6 kn / 55 nm at 4 kn submerged, UB 118 to UB 132 = 8,420 nm at 6 kn / 55 nm at 4 kn submerged, UB 142, UB 143 and UB 148, UB 149 = 7,820 nm at 8 kn / 50 nm at 5 kn submerged |
| Diving depth | 75 m |
| Fuel | 68 cbm to 75 cbm |
| Armament | 4 bow torpedo tubes, 1 stern torpedo tubes, 10 torpedoes, 1 x 8.8 cm or 1 x 10.5 cm gun |
| Complement | 34 |