german Imperial German Navy - Kaiserliche Marine (1903-1919) UB-75 [+1917]
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nationality german
purpose war
type submarine
subtype/class UB III class submarine (ger.)
UB III class submarine (ger.) UB-48 (+1918)
propulsion diesel and batteries
date built 1917
live live
weight (tons) 651  disp (subm)
dimensions 55.3 x 5.8 x 3.68 m
material steel
engine 2 x 6 cylinder 4 cycle diesel by Man-Vulcan - 2 x 550 EHP, electric motors type Mafferi - 2 x 500 EHP, 2 x screw
armament 10 torpedoes, 4 bow 50cm/19.7” torpedo tubes, 1 stern 50cm/19.7” torpedo tube, 1 x 105 / 88mm ? KL/45 deck gun (160 rounds)
power 1100  h.p.
speed 13.6  knots
yard no. 304
about the loss
cause lost mine
date lost 10/12/1917  [dd/mm/yyyy]
casualties  max.34rank: 611
about people
Blohm & Voss, Hamburg
engine by
MAN (Maschinenfabrik Augsburg-Nurnberg) , Augsburg
Imperial German Navy - Kaiserliche Marine (1903-1919)
captain Walther, Franz
complement 34
about the wreck
status in good state
depth (m.) 63 max. / 50 min. (m)
orientation 145°
position on seabed upright
visibility good
current strong
sea bed hard ground
protected no
war grave yes
 Racey Carl, A Century of Steamship Losses
entered by Racey Carl
entered 31/12/2005
last update Lettens Jan
last update 02/03/2014
Lettens Jan01/10/2009
latitudeUK hydro member
longitudeUK hydro member
AISUK hydro member
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dist. homeportdist. homeport
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 UK Hydrographic Office
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  The Wreck today  

Lettens Jan06/08/2007

Orientation: NW-SE, max depth: 53 metres, sea bed: smooth gravel; condition: 6 metre high in two pieces. Launch: Bridlington.

Racey Carl31/12/2005

Discovered on September 1st 2002 by Carl Racey & Andy Jackson off Robin Hood's Bay, Scarborough, upright & intact, mine damage at the stern end, about 5m missing. Featured in BBC documentary in Sept 2003 along with the discovery of UB-41 found nearby during same dive trip. This is a War Grave! all hands lost!
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 Carl Racey & Crew

Lettens Jan01/10/2009

UK hydro member
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 UK Hydrographic Office

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copyright: Racey Carl
 copyright: Racey Carl copyright: Racey Carl copyright: Unknown - onbekend - inconnu  
 copyright: Unknown - onbekend - inconnu copyright: UK Hydrographic Office copyright: Unknown - onbekend - inconnu copyright: Unknown - onbekend - inconnu 
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  Hydrographic Service UK  
Racey Carl15/11/2009After sinking the SS Frithjof Eide on 09/11/1917 (1109 tons) in Filey Bay the UB-75 commenced her 2nd patrol on 29th November off Yorkshire Coast sinking the SS Aigburth on 05/12/1917 (824 tons) 2 miles off Robin Hood’s Bay; SS Highgate 07/12/1917 (1780 tons) 3 miles off Robin Hood’s Bay; SS Lampada 08/12/1917 (2220 tons) 3 miles NW of Whitby; SS Venetia 09/12/1917 (3596 tons) 3 miles NNW of Whitby.
It is possible the UB-75 sank the SS Ottokar (957 tons) in the Whitby area, on 11/12/1917. The UB-75 failed to return to Borkum on 13/12/1917.
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 Racey Carl, A Century of Steamship Losses
Racey Carl10/12/2009The UB-75 left Borkum on the 29th November 1917 for the Whitby area. After sinking five merchant ships, it is assumed that she would then have set a course for home, been scheduled to arrive there on the 13th of December. All that is known for certain is that she never made it back to Borkum and her loss could have been anywhere south of Whitby along the North Sea crossing. Many parties speculated that she was lost in the newly laid, mined submarine nets, well off Flamborough Head.

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 Racey Carl, A Century of Steamship Losses
Racey Carl10/12/2009Earlier on the 4th November UB-75 torpedoed the armed merchant vessel s.s. LUCIDA 1,477 g/tons, 2.5 miles N of Scarborough, the vessel was beached but 4 lives lost. This was the first of UB-75 victims. Oberleutnant Franz Walther as the commander of the UB-21 had already experienced much success along the Yorkshire Coast.
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 Racey Carl
Racey Carl31/12/2005The wreck of the UB-75 was finally found some 25 miles further North than postion listed in German & British records. Good video footage of the wreck: see wedsite:
Lettens Jan01/10/2009UK hydro member
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 UK Hydrographic Office
Racey Carl31/12/2005UB-75, Blohm & Voss, Hamburg; 5 May, 1917; 10 torpedeos, 4 bow tubes & 1 stern tube; No mines carried ; Deck gun: 88mm, 160 rounds of ammunition; 1100hp/788 hp; 13,6 knots/8,0knots (surface/submerged); Cmdr. F Walther , V Flotilla . UB-75 had an active career, sinking 5 ships for a total of 9.529 tons (warships excluded). Presumably sunk by a mine of Flamborough Head in the North Sea, 10 December 1917.

All hands (34) lost

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About Owners
Imperial German Navy - Kaiserliche Marine (1903-1919)

Kaiserliche Marine or the German Imperial Navy is the name for the German Navy between 1903 and 1919. Most of the ships had a prefix SMS, Seine Majestäts Schiff, which is the equivalent of HMS, Her/His Majesty's Ship.

This Navy should not be confused with Reichsmarine (1920-1935) or Kriegsmarine (1935-1945).
About Builders
 Blohm & Voss, Hamburg
The name Blohm & Voss has stood for quality in ship construction and marine and mechanical engineering for 125 years. Blohm & Voss was founded in 1877 by Hermann Blohm and Ernst Voss as a general partnership. A shipyard was built on the island of Kuhwerder having three building berths along a 250m water front. - - -

Although the company was almost completely demolished at the end of World War II, it still builds warships both for the Deutsche Marine and for export. Today Blohm + Voss is an innovative German shipyard specializing in the construction of naval vessels and technically sophisticated megayachts from building facilities in Hamburg including repairs, refits, and modification of such vessels as well as merchant ships.

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Racey Carl  14/06/2010
A team Scarborough divers found the last two WW1 missing U-Boats off the Yorkshire Coast in one weekend after a search that had lasted more than 8 years. It was not known until the discovery was made that both subs had come to grief in the same British mine field and that they layed within half a mile of each other off Robin Hoods Bay. The BBC put a short piece together for the National version of Inside Out in 2004 which tells the story and takes the pair to Cuxhaven in Germany to report the finds
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 Carl Racey & Crew
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