For other ships of the same name, see German submarine U-28.
| SM UB-28 | |
|---|---|
 SM UB-45 a u-boat similar to UB-28 | |
| Career (German Empire) |  |
| Name: | UB-28 |
| Ordered: | 30 April 1915[1] |
| Builder: | AG Weser, Bremen[1] |
| Cost: | 1,291,000 German Papiermark[2] |
| Yard number: | 242[1] |
| Launched: | 20 December 1915[1] |
| Commissioned: | 27 December 1915[3] |
| Fate: | surrendered 24 November 1918[3] |
| General characteristics | |
| Class & type: | German Type UB II submarine |
| Displacement: |
265 t (261 long tons) ↑[2] 291 t (286 long tons) ↓[2] |
| Length: | 36.13 m (118 ft 6 in)[2] |
| Beam: | 436 m (1,430 ft 5 in)[2] |
| Draft: | 3.66 m (12 ft 0 in)[2] |
| Propulsion: |
2 × propeller shafts 2 × Benz diesel engines, 270 shp (200 kW)[2] 2 × Siemens-Schuckert electric motor, 280 shp (210 kW)[2] |
| Speed: |
8.9 knots (16.5 km/h) ↑[2] 5.72 knots (10.59 km/h) ↓[2] |
| Range: |
7,200 nautical miles (13,300 km; 8,300 mi) @ 5 knots (9.3 km/h; 5.8 mph) ↑[2] 45 nmi (83 km; 52 mi) @ 4 knots ↓[2] |
| Test depth: | 50 m (160 ft)[2] |
| Complement: | 2 officers, 21 men[2] |
| Armament: |
2 × 50 cm (19.7 in) torpedo tubes[2] 4 × torpedoes (later 6) 1 × 5 cm SK L/40 gun[2] |
| Notes: | 30-second diving time[2] |
SM UB-28 was a German Type UB II submarine or U-boat in the German Imperial Navy (German language: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 20 December 1915. She was commissioned into the German Imperial Navy on 27 December 1915 as SM UB-28.[Note 1]
UB-28 was surrendered to Britain in accordance with the requirements of the Armistice with Germany on 24 November 1918. She was ultimately broken up at Bo'ness in 1919-20.[3]
Notes[]
- ↑ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
References[]
Bibliography[]
- Gröner, Erich (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. III. Koblenz: Bernhard&Graefe. ISBN 3-7637-4802-4.
- Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal. Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7.
- Rössler, Eberhard (1979). U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 - 1945. I. Munich: Bernhard&Graefe. ISBN 3-7637-5213-7.
The original article can be found at SM UB-28 and the edit history here.