# SM UC-11

SM UC-11 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 23 November 1914, laid down on 26 January 1915, and was launched on 11 April 1915. She was commissioned into the German Imperial Navy on 23 April 1915 as SM UC-11. Mines laid by UC-11 in her 83 patrols were credited with sinking 27 ships. UC-11 was mined and sunk on 26 June 1918. A crew member was Rudolf Finkler from Oberlinxweiler, Kreis St. Wendel, Germany. According to his death record the boat went down in the North Sea near Harwich, abt. 2.5 nautical miles (4.6 km; 2.9 mi) north east of Funk Feuerschiff on position 51°55′N 1°41′E﻿ / ﻿51.917°N 1.683°E﻿ / 51.917; 1.683.

## Design

A Type UC I submarine, UC-11 had a displacement of 168 tonnes (165 long tons) when at the surface and 182 tonnes (179 long tons) while submerged. She had a length overall of 33.99 m (111 ft 6 in), a beam of 3.15 m (10 ft 4 in), and a draught of 3.06 m (10 ft). The submarine was powered by one Benz six-cylinder, four-stroke diesel engine producing 80 metric horsepower (59 kW; 79 shp), an electric motor producing 175 metric horsepower (129 kW; 173 shp), and one propeller shaft. She was capable of operating at depths of up to 50 metres (160 ft).
The submarine had a maximum surface speed of 6.20 knots (11.48 km/h; 7.13 mph) and a maximum submerged speed of 5.22 knots (9.67 km/h; 6.01 mph). When submerged, she could operate for 50 nautical miles (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 910 nautical miles (1,690 km; 1,050 mi) at 5 knots (9.3 km/h; 5.8 mph). UC-11 was fitted with six 100 centimetres (39 in) mine tubes, twelve UC 120 mines, and one 8 millimetres (0.31 in) machine gun. She was built by AG Weser Bremen and her complement was fourteen crew members.

## Summary of raiding history

| Date | Name | Nationality | Tonnage | Fate |
| 1 June 1915 | HMS Mohawk | Royal Navy | 865 | Damaged |
| 9 June 1915 | Erna Boldt | United Kingdom | 1,731 | Sunk |
| 9 June 1915 | Lady Salisbury | United Kingdom | 1,446 | Sunk |
| 10 June 1915 | HMS TB 10 | Royal Navy | 255 | Sunk |
| 10 June 1915 | HMS TB 12 | Royal Navy | 255 | Sunk |
| 15 June 1915 | Argyll | United Kingdom | 280 | Sunk |
| 20 October 1916 | Huguenot | United Kingdom | 1,032 | Sunk |
| 24 October 1916 | Framfield | United Kingdom | 2,510 | Sunk |
| 26 October 1916 | HMT Lord Roberts | Royal Navy | 293 | Sunk |
| 21 November 1916 | Helena | Netherlands | 1,798 | Sunk |
| 29 November 1916 | HMT Lord Airedale | Royal Navy | 215 | Sunk |
| 9 December 1916 | Forth | United Kingdom | 1,159 | Sunk |
| 9 December 1916 | Harlington | United Kingdom | 1,089 | Sunk |
| 9 December 1916 | Harlyn | United Kingdom | 1,794 | Sunk |
| 17 December 1916 | Michail Ontchoukoff | Denmark | 2,118 | Sunk |
| 29 December 1916 | Zoroaster | United Kingdom | 3,803 | Sunk |
| 8 January 1917 | HMD Cape Colony | Royal Navy | 82 | Sunk |
| 2 February 1917 | HMT Holdene | Royal Navy | 274 | Sunk |
| 12 February 1917 | Foreland | United Kingdom | 1,960 | Sunk |
| 14 February 1917 | Marie Leonhardt | United Kingdom | 1,466 | Sunk |
| 26 April 1917 | HMS Mercury | Royal Navy | 378 | Damaged |
| 27 April 1917 | HMT Agile | Royal Navy | 246 | Sunk |
| 24 September 1917 | HMD Hastfen | Royal Navy | 77 | Sunk |
| 25 October 1917 | Wearside | United Kingdom | 3,560 | Sunk |
| 27 October 1917 | HMT Strymon | Royal Navy | 198 | Sunk |
| 24 November 1917 | French Rose | United Kingdom | 465 | Sunk |
| 25 November 1917 | Ostpreussen | United Kingdom | 1,779 | Sunk |
| 27 November 1917 | Groeswen | United Kingdom | 3,570 | Sunk |
| 16 January 1918 | HMT John E. Lewis | Royal Navy | 253 | Sunk |
| 13 June 1918 | HMS Conquest | Royal Navy | 4,219 | Damaged |