UD5 1944
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| UD3 (ex-O25) | 667 | Wilton-Fijenoord, Schiedam, Netherlands | 4.1939 | 1.5.1940 | 6.1941 | stricken 10.1944 | |
| UD4 (ex-O26) | 209 | Rotterdam Droogdok, Netherlands | 4.1939 | 23.11.1940 | 1.1941 | stricken 3.1945 | |
| UD5 (ex-O27) | 210 | Rotterdam Droogdok, Netherlands | 8.1939 | 26.9.1941 | 1/1942 | surrendered 5.1945, to Netherlands 7.1945 (O27) |
|
Displacement standard, t |
|
|
Displacement normal, t |
990 / 1205 |
|
Length, m |
77.7 |
|
Breadth, m |
6.80 |
|
Draught, m |
4.00 |
|
No of shafts |
2 |
|
Machinery |
2 Sulzer-de Schelde diesels / 2 Schmit electric motors |
|
Power, h. p. |
5000 / 1000 |
|
Max speed, kts |
19.5 / 9 |
|
Fuel, t |
diesel oil 135 |
| Endurance, nm(kts) | 7100(10) / 28(8.5) |
|
Armament |
UD3, 5: 1 x 1 - 88/42 SK C/35, 2 x 1 - 20/65 C/38, 6 - 533 TT (4 bow, 2 stern, 12) UD4: 1 x 2 - 20/65 C/38, 6 - 533 TT (4 bow, 2 stern, 12) |
| Electronic equipment | GHG hydrophone |
| Complement |
39 |
| Diving depth operational, m | 100 |
Project history: Former Dutch submarines O25, O26 and O27, captured incomplete 14.5.1940 by German troops; 23.7.1940 they were renamed UD3-5. They were completed under German standards, CT and original artillery (1 single 88mm gun and 2 single 40mm MGs) were replaced by new; trainable TT mount, most likely, was never installed. UD3 and UD5 participated in operations, UD4 was used only as training boat and had no 88mm gun.
Modernizations: 1942-1943, most: + FuMO 30 radar, FuMB 1 Metox ECM suite
1943-1944, most: - FuMB 1 Metox ECM suite; + FuMB 3 Bali, FuMB 6 Palau ECM suites
1944 - 1945, UD5 are rearmed with artillery consisted of 1 x 1 - 37/69 FlaK M/42, 2 x 2 - 20/65 C/38
1944-1945, some survived: - FuMO 30 radar; + FuMO 61 radar
Naval service: UD3 and UD4 were stricken in 1944-1945, both were in 1945 captured by Allies at Kiel and handed over on demolition. UD5 was returned to the Netherlands in 1945 and BU in December, 1960.
© Ivan Gogin, 2008-14