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SM UC-55

Picture
UC II Class U boat.


​UC-55.  29/09/1917

UC II Class U boat.

Displacement: 
691t disp (surf)

   Length: 52.68m.    Beam: 5.22m.   Draught: 3.61 m.
Propulsion: 2 × 6-cylinder, 4-stroke diesel engines -2 × electric motors  .
Complement: 29  officers and men.
Crew Lost: 11

Armament: ​​6 × 100 cm (39.4 in) mine tubes
18 × UC 200 mines
3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern)
7 × torpedoes
1 × 8.8 cm (3.5 in) Uk L/30 deck gun





On the 29 September 1917 while attempting to lay mines off Lerwick, Shetland UC 55 suffered a loss of trim and went below her maximum diving depth which resulted in several leaks. The battery compartment flooded which produced chlorine gas. The U boat was forced to surface to ventilate the compartments but was then found the helm would not respond.
Two British destroyers HMS Tirade & HMS Sylvia and the armed trawler Moravia were ordered to the area and started shelling the surfaced U Boat.
​
On seeing the approaching destroyers   Oblt. Horst Rühle von Lilienstern ordered secret papers destroyed and scuttling charges set and then ordered the crew to abandon the U boat. A 12-pdr shell from HMS Sylvia hit the conning tower killing Oblt.z.S. Horst Rühle von Lilienstern. Another shell hit the hull and UC 55 began to sink. Two depth charges were then dropped alongside the U boat followed by more shells and one depth charge from HMT Moravia. 10 of the crew were killed and 17 were taken prisoner.


UC 55 sank in position 60°03.186'N  00°05.067'W,  8 miles SE of Lerwick, in 103m of water.
The wreck was located in 1985 with side scan sonar during a survey for UKHO. 
On the 29 September 1917 while attempting to lay mines off Lerwick, Shetland UC 55 suffered a loss of trim and went below her maximum diving depth which resulted in several leaks. The battery compartment flooded which produced chlorine gas.

The U boat was forced to surface to ventilate the compartments but was then found the helm would not respond.


Two British destroyers HMS Tirade & HMS Sylvia and the armed trawler Moravia were ordered to the area and started shelling the surfaced U Boat.
​
On seeing the approaching destroyers   Oblt. Horst Rühle von Lilienstern ordered secret papers destroyed and scuttling charges set and then ordered the crew to abandon the U boat.

A 12-pdr shell from HMS Sylvia hit the conning tower killing Oblt.z.S. Horst Rühle von Lilienstern. Another shell hit the hull and   
UC-55 began to sink. Two depth charges were then dropped alongside the U boat followed by more shells and one depth charge from HMT Moravia.

10 of the crew were killed and 17 were taken prisoner.



UC 55 sank in position 60°03.N  00°05'W,  8 miles SE of Lerwick, in 103m of water.

The Wreck
​UKHO wreck card 137 created in 1985.

The wreck was located in 1985 with side scan sonar during a survey for UKHO in position 60°03.186'N  00°05.067'W.


 LEAST E/S DEPTH 97MTRS IN GEN DEPTH 103MTRS. NO SCOUR. DCS3 HT 5.6MTRS, LENGTH 50MTRS, BEAM 10MTRS. LYING 015/195DEG. SONAR TRACE INDICATES APPARENTLY A SUBMARINE. SEABED ROCK OUTCROPS IN SAND & GRAVEL
Picture
Side Scan image UC-55 from 1985 survey (UKHO)

 SM UC-55 Crew Lost.  † 29/09/1917

​

​RÜHLE VON LILIENSTERN, HORST (27), Oberleutnant zur See, Iron Cross 2nd class.

KEßBERG, ERICH , Matrose.
   
KIRST, ALFRED , Marine-Ingenieur ObAsp.
 
LANGE, FELIX , Maschinenmaat,
 
MOURITZ, ERNST , Obermaschinistenmaat, 

OFENBECK, KARL , Heizer.
 
REBUSCHATIS, JOHANNES , Maschinenmaat.

SCHACHT, ALBERT , Oberbootsmannmaat d. Res.

SCHUSCHEL, WILHELM , Matrose.

THEIS, HEINRICH , Heizer. 

WILKENING, WILHELM , Matrose. 
Sponsors
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