UF submarine class
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| Construction data | |
| Ship type | Submarine |
| Ship class | Submarine for near-shore use |
| Construction designation: | Project 48 from UF 49 Project 48a |
| Builder: |
Schichau / Elbing UF 1-20, UF 81-92 Joh. C. Tecklenborg / Geestemünde UF 21-32, UF 49-60 Atlas-Werke / Bremen UF 33-38, UF 73-76 Neptunwerft / Rostock UF 39-44, UF 77-80 Seebeck / Geestemünde UF 45-48, UF 61-72 |
| Keel laying : | from summer 1918 |
| Launch : | no boat launched |
| Completion: | planned from October 1, 1918, none completed |
| Building-costs: | k. A. |
| Technical specifications | |
| Displacement : | 364 ts standard 480 ts submerged |
| Length: | 44.6 m |
| Width: | 4.44 m |
| Draft : | 3.8 m |
| Drive : | 2 × diesel engines 440 kW (600 PS) 2 × diesel engines 660 kW (900 PS) (from UF 49) 2 × electric motors 455 kW (620 PS) 2 propellers |
| Fuel supply: | 29 t |
| Speed : | 11.5 kn surfaced 13 kn (from UF 49) 7.25 kn submerged |
| Range : | 4,000 nm / 7.3 kn surfaced 50 nm / 4.6 kn submerged |
| maximum diving depth: | 75 m |
| Crew : | 25 men |
| Armament: | 1 × 88 mm Utof C 01 L / 30 5 × 500 mm torpedo tubes 2 reserve torpedoes |
The UF submarine class was a submarine class of the Imperial Navy developed in 1917 specifically for use by the Ostend and Zeebrugge naval bases against British merchant ships in the Channel and in the North Sea for coastal use.
The demands of the Marine Corps Flanders ( Kapt. Z. S. Bartenbach ), which was responsible for the use of the boats, were limited in autumn 1917 to a powerful single-hulled boat with internal oil bunkers, so that no bunker leaks should occur after a depth charge. The new type was to be developed from type UB III , since its stability limit had been reached and improvements in the design could no longer be realized. In addition, due to the short development time, parts of the UC III type , such as the diesel and electric motor system, should continue to be used. A main focus was also on the shortest possible diving times. The simplest possible construction was another feature in order to include smaller shipyards that had not been used for submarine construction up to now, as well as to maintain short construction times. Deliveries were to begin on October 1, 1918, so that the boats would be ready for use in spring 1919. Due to the delayed delivery of the engine systems, there were delays until January 1919, so that no boat was put into service.
The type traded in the project list of the inspection of submarines under the number Project 48. According to this design, the first 48 boats were to be built. According to the further developed project 48a, the following 54 boats were to be equipped with a reinforced diesel engine system in order to achieve a higher surface speed.
The construction contracts were carried out between December 18, 1917 and April 9, 1918 with war contract X at the shipyards involved. The improved boats from UF 49 to UF 92 were ordered between May 22, 1918 and July 2, 1918 with the war order AF . No further orders were placed because it was believed that they could cover the acute need. After production was discontinued in 1920, the reinforced and larger type UG (project 51) was to be continued.
In 1926, the type Project 48a was included in the mobilization plan A of the Reichsmarine . This was the case until 1929, when the secret armaments efforts in connection with the Ingenieurskantoor voor Scheepsbouw in Deen Haag designed more modern types for foreign countries (Spain, Finland, Turkey). The 48 project was one of the starting points for the submarine-type II the Navy of the Third Reich.
Although there were 27 plans of the type in the archives in 1926, none of them apparently survived the Second World War. Newer publications therefore always contain a reconstructed type sketch. The UF submarine class was outwardly similar to the Finnish Vesikko type and the IIA type of the later Navy, and the internal layout was roughly the same.
literature
- Eberhard Rössler : German submarines 1898–1918. ES Mittler & Sohn Hamburg, Berlin, Bonn 2011 ISBN 978-3-8132-0926-6
- Eberhard Rössler: History of the German submarine construction. Vol. 1 Development, construction and characteristics of the German submarines from the beginnings until 1943. Bernard & Graefe Koblenz 1986 ISBN 3-7637-5801-1
- Eberhard Rössler: The submarines of the Imperial Navy. Bernard & Graefe Bonn 1997 ISBN 3-7637-5963-8
- Eberhard Rössler: UF, the “faceless” submarine type. Marine-Rundschau 79 (1982); H. 8: pp. 434-435
- Erich Gröner : The German warships 1815-1945. Bd. 3 U-boats, auxiliary cruisers, mine ships, net layers, barrier breakers. Bernard & Graefe Koblenz 1985 ISBN 3-7637-4802-4
Web links
- U-Boot-Net ( Memento from December 2, 2014 in the Internet Archive )
- Details about the boats UF 1 to UF 50 (Russian)
- Details on the boats UF 51 to UF 92 (Russian)