U1405 1944
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| U1405 | 255 | Blohm & Voss, Hamburg | 10.1943 | 1.12.1944 | 12.1944 | scuttled 5.5.1945 | |
| U1406 | 256 | Blohm & Voss, Hamburg | 10.1943 | 2.1.1945 | 2.1945 | scuttled 5.5.1945, salvaged to USA, BU 5.1948 | |
| U1407 | 257 | Blohm & Voss, Hamburg | 11.1943 | 2.1945 | 3.1945 | scuttled 5.5.1945, salvaged, to United Kingdom 1946 (Meteorite) | |
| U1408 | 258 | Blohm & Voss, Hamburg | 10.1943 | --- | --- | damaged incomplete 30.3.1945, cancelled | |
| U1409 | 259 | Blohm & Voss, Hamburg | 12.1943 | --- | --- | damaged incomplete 30.3.1945, cancelled | |
| U1410 | 260 | Blohm & Voss, Hamburg | 12.1943 | --- | --- | cancelled 3.1944 |
|
Displacement standard, t |
|
|
Displacement normal, t |
312 / 337 |
|
Length, m |
41.5 |
|
Breadth, m |
4.50 |
|
Draught, m |
4.30 |
|
No of shafts |
1 |
|
Machinery |
1 Deutz diesel / 1 Brückner & Kanis-Walter geared hydrogen peroxide steam-gas turbine / 1 AEG electric motor |
|
Power, h. p. |
210 - 230 / 2500 / 77 |
|
Max speed, kts |
8.5 / 25 / 5 |
|
Fuel, t |
diesel oil 20 + Walter fuel 52 |
| Endurance, nm(kts) | 3000(8) / 123(25) or 76(2) |
|
Armament |
2 - 533 TT (short) (bow, 4) |
| Electronic equipment | FuMO 30 or FuMO 61 radar, GHG hydrophone, FuMB 3 Bali, FuMB 6 Palau ECM suites |
|
Complement |
12 |
| Diving depth operational, m | 80 |
Project history: Experimental submarines of a construction of G. Walter with hydrogen peroxide turbines used H2O2 as oxidizer. Using of this non-standard fuel-oxidizer mix, known as "Walter-Treibstoff", theoretically allowed to increase strongly submerged machinery power of submarine and submerged speed, allowing to use diesel oil in submerged position.
First built was experimental V80, shown submerged 28kts speed, but appeared too uneconomical. She was followed by experimental V300, included to fleet list as U791, but never completed.
In summer of 1942 orders for 4 submarines of XVIIA series belonging to two different designs: Wa201 and Wk202. These submarines had single-shaft diesel-electric machinery with additional hydrogen peroxide turbine intended for short-term increase of submerged speed. Trials were passed successfully and then 4.1.1943 the order on 12 submarines of XVIIB series was been given out, only 10 such boats were laid down, and building of 7 units was cancelled after the beginning of building of "elektroboot"s of XXI and XXIII series.
Modernizations: None.
Naval service: U1405 was scuttled 5.5.1945 at Eckernförde. U1406 was scuttled 7.5.1945 at Cuxhaven, salvaged and transferred to the USA, BU in 1948. U1407 was scuttled 7.5.1945 at Cuxhaven, salvaged and transferred to United Kingdom as Meteorite, BU in 1949.
© Ivan Gogin, 2008-14