# SM UB-48

The SM UB-48 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. It was commissioned into the German Imperial Navy on 11 June 1917 as SM UB-48.
The submarine conducted nine patrols and sank 35 ships during the war for a total loss of 107,795 gross register tons (GRT) and one destroyer. It operated as part of the Pola Flotilla and later the II Mediterranean U-boat Flotilla based in Cattaro. UB-48 was one of the most successful U-boats serving in the Mediterranean. The boat was assigned the number U-79 in the Austro-Hungarian Navy. It was scuttled in Pola after the surrender of Austria-Hungary on 28 October 1918.

## Construction

UB-48 was ordered by the GIN on 20 May 1916 and built by Blohm & Voss of Hamburg. Following less than a year of construction, it was launched at Hamburg on 6 January 1917. UB-48 was commissioned later that same year under the command of Wolfgang Steinbauer. Like all Type UB III submarines, UB-48 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-48 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,090 nautical miles (16,830 km; 10,460 mi). UB-48 had a displacement of 516 t (508 long tons) while surfaced and 651 t (641 long tons) when submerged. Her engines enabled her to travel at 13.6 knots (25.2 km/h; 15.7 mph) when surfaced and 8 knots (15 km/h; 9.2 mph) when submerged.

## Summary of raiding history

Ships sunk or damaged by SM UB-48 :
| Date | Name | Nationality | Tonnage | Fate |
| 12 August 1917 | Roanoke | United Kingdom | 4,803 | Sunk |
| 14 August 1917 | HMS Prize | Royal Navy | 199 | Sunk |
| 18 August 1917 | Kongsli | Norway | 5,826 | Sunk |
| 20 August 1917 | Serra Do Marco | Portugal | 74 | Sunk |
| 20 August 1917 | Serra Do Pilar | Portugal | 65 | Sunk |
| 23 August 1917 | Winlaton | United Kingdom | 3,270 | Sunk |
| 27 August 1917 | Hathor | United Kingdom | 3,823 | Sunk |
| 2 October 1917 | Imera | Italy | 1,172 | Sunk |
| 6 October 1917 | Citta Di Bari | Italy | 1,489 | Sunk |
| 9 October 1917 | Niki | Greece | 511 | Sunk |
| 14 October 1917 | Valparaiso | Italy | 4,930 | Sunk |
| 19 October 1917 | Pera | United Kingdom | 7,635 | Sunk |
| 20 October 1917 | Collegian | United Kingdom | 7,520 | Sunk |
| 27 November 1917 | Glenbridge | United Kingdom | 3,845 | Damaged |
| 4 December 1917 | Dowlais | United Kingdom | 3,016 | Sunk |
| 4 December 1917 | Gerasimos | Greece | 3,845 | Sunk |
| 8 December 1917 | Consols | United Kingdom | 3,756 | Sunk |
| 27 January 1918 | Volonta Di Dio | Italy | 43 | Sunk |
| 30 January 1918 | Harlaw | Italy | 821 | Sunk |
| 2 February 1918 | Celia | United Kingdom | 5,004 | Sunk |
| 2 February 1918 | Edilio | Italy | 4,719 | Sunk |
| 2 February 1918 | Newminster Abbey | United Kingdom | 3,114 | Sunk |
| 3 February 1918 | Aboukir | United Kingdom | 3,660 | Sunk |
| 7 February 1918 | Sturton | United Kingdom | 4,406 | Sunk |
| 26 April 1918 | Upada | United Kingdom | 5,257 | Damaged |
| 26 April 1918 | Leopold D’or | France | 2,300 | Sunk |
| 27 April 1918 | Romany | United Kingdom | 3,983 | Sunk |
| 27 April 1918 | Saint Jean | French Navy | 287 | Damaged |
| 29 April 1918 | Kingstonian | United Kingdom | 6,564 | Sunk |
| 29 April 1918 | HMT Dalkeith | Royal Navy | 748 | Sunk |
| 29 April 1918 | Monte Bianco | France | 988 | Damaged |
| 29 April 1918 | HMT Moose | Royal Navy | 208 | Damaged |
| 2 May 1918 | Franklyn | United Kingdom | 4,919 | Sunk |
| 2 May 1918 | Tyler | United States | 3,928 | Sunk |
| 5 May 1918 | Clan Ross | United Kingdom | 5,971 | Damaged |
| 2 June 1918 | San Antonio | Italy | 389 | Sunk |
| 6 June 1918 | Christophero Colombo | Italy | 264 | Sunk |
| 10 June 1918 | Nivernais | France | 2,555 | Sunk |
| 13 June 1918 | Penhallow | United Kingdom | 4,318 | Sunk |
| 16 August 1918 | Balkan | France | 1,709 | Sunk |
| 18 August 1918 | Nordboen | Denmark | 2,417 | Sunk |
| 1 September 1918 | Baron Minto | United Kingdom | 4,537 | Damaged |
| 1 September 1918 | Monviso | Italy | 4,020 | Damaged |
| 18 October 1918 | Voltaire | French Navy | 18,400 | Damaged |