SM UB-8
SM UB 8
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| History | |
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 German Empire
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| Name: | UB 8 |
| Ordered: | 15 October 1914 |
| Builder: | Germaniawerft, Kiel |
| Yard number: | 246 |
| Laid down: | 4 December 1914 |
| Launched: | April 1915 |
| Commissioned: | 23 April 1915 |
| Fate: | sold to Bulgaria, 25 May 1916 |
| Service record | |
| Part of: |
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| Commanders: | Ernst von Voigt (May 1915 – May 1916) |
| Operations: | 14 patrols |
| Victories: | 2 ships (20,645 GRT) sunk |
| History | |
 Bulgaria
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| Name: |
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| Acquired: | purchased 25 May 1916 |
| Commissioned: | 25 May 1916 |
| Fate: | surrendered to France, broken up at Bizerta, August 1921 |
| Service record | |
| Part of: | Bulgarian Navy |
| Commanders: |
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| General characteristics | |
| Class and type: | German Type UB I submarine |
| Displacement: |
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| Length: | 28.10 m (92.2 ft) (o/a) |
| Beam: | 3.15 m (10 ft 4 in) |
| Draft: | 3.03 m (9 ft 11 in) |
| Propulsion: |
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| Speed: |
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| Range: |
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| Test depth: | 50 metres (160 ft) |
| Complement: | 14 |
| Armament: |
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| Notes: | 33-second diving time |
SM UB-8 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was sold to Bulgaria in 1916 and renamed Podvodnik No. 18 (Bulgarian: Пoдвoдник №18), and was the first ever Bulgarian submarine.
UB-8 was ordered in October 1914 and was laid down at the AG Weser shipyard in Bremen in November. UB-8 was a little under 28 metres (92 ft) in length and displaced between 127 and 141 tonnes (125 and 139 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. UB-8 was originally one of a pair of UB I boats sent to the Austro-Hungarian Navy to replace an Austrian pair to be sent to the Dardanelles, and was broken into sections and shipped by rail to Pola in March 1915 for reassembly. She was launched and commissioned as SM UB-8 in the German Imperial Navy in April when the Austrians opted out of the agreement.
Although briefly a part of the Pola Flotilla at commissioning, UB-8 spent the majority of her German career patrolling the Black Sea as part of the Constantinople Flotilla. The U-boat sank two ships. One of them, SS Merion, was disguised by the British Admiralty as a Royal Navy battlecruiser as part of a decoy operation. In October, she helped repel a Russian bombardment of Bulgaria.
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Wikipedia