Submarine class UG
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| Construction data | |
| Ship type | Submarine |
| Ship class | medium submarine for convoy combat |
| Construction designation: | Project 51 |
| Builder: |
AG Vulkan / Hamburg Joh. C. Tecklenborg / Geestemünde Neptunwerft / Rostock Seebeck / Geestemünde Atlas-Werke / Bremen Nordseewerke / Emden Flensburger Schiffbau-Gesellschaft / Flensburg |
| Keel laying : | from 1919, not laid down |
| Launch : | |
| Completion: | |
| Building-costs: | k. A. |
| Technical specifications | |
| Displacement : | 655 ts standard ? ts submerged |
| Length: | 64.0 m |
| Width: | 6.42 m |
| Draft : | 4.4 m |
| Drive : | 2 × diesel motors of 950 HP each 2 × electric motors of 550 HP each 2 propellers |
| Fuel supply: | 75 t |
| Speed : | 14.5 kn surfaced approx. 8 kn submerged |
| Range : | 8,000 nm / 6 kn surfaced 90 nm / 3 kn submerged |
| maximum diving depth: | 100 m |
| Crew : | 37 men |
| Armament: | 1 × 105 mm Utof C16 L / 45 6 × 500 mm torpedo tubes 6 reserve torpedoes |
The UG submarine class was a projected submarine class of the Imperial Navy during the final phase of the First World War . It should be used mainly against the Allied convoys to and from Great Britain .
In the summer of 1918, the submarine inspection (UI) of the Imperial Navy decided to redesign a medium-sized submarine that was supposed to take on the tasks of type UB III . As was the case with the UF type, the decisive factor in these considerations was the requirement to avoid traces of oil after depth charges, and to accommodate the fuel bunker inside. As a result, this led to a mixed type of single hull and double hull boat, i.e. H. a boat with a relatively large pressure hull and correspondingly small external tanks. The lines of the new type were designed in such a way that they should give the boat the best possible diving properties. This idea corresponded above all to the aft ship, in which an almost spindle-shaped hull (meaning a particularly low-resistance underwater shape) was created, dispensing with an underwater torpedo tube and relocating the screw shafts at the height of the pressure hull axis. On the upper deck in the midship area, two overwater torpedo tubes were installed with an aft direction.
After an extensive discussion of the various departments in August 1918, where a larger type UG I and a smaller type UG II were put up for discussion, the decision was made for the enlarged design, the surface speed of which is more than 13 knots and at the same time at least four torpedo tubes in the Bug should result.
A detailed construction was no longer made due to the end of the war. Also, no more construction contracts have been awarded - only the building yards and the delivery target for the program year 1920 have been set. A total of 101 units were planned to be built. At the end of the war, almost all documents relating to this type were destroyed, so that only a line sketch has survived the times.
In the secret mobilization plan A of the Reichsmarine from 1926, this type was discontinued as being to be built. Subsequently, Friedrich Schürer, the marine building officer, carried out a reconstruction of the type under the designation Project 51a . The submarine class UG was the starting point for some types of submarines of the Second World War , some of which were built in large series. Thanks to the work of the Ingenieurskantoor voor Scheepsbouw design office, the Finnish type Vetehinen , the German type I and type VII boats, the Soviet boats of the Stalinez class and the Turkish boat Gür (ex Spanish E 1) were direct descendants of the UG type.
The appearance corresponded to the Type VII of the German Navy.
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
- 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