SM UB-42

SM UB-42
History
German Empire
Name:	UB-42
Ordered:	31 July 1915
Builder:	AG Weser, Bremen
Yard number:	244
Laid down:	3 September 1915
Launched:	4 March 1916
Commissioned:	23 March 1916
Fate:	broken up at Malta, 1920
General characteristics
Class and type:	German Type UB II submarine
Displacement:	279 t (275 long tons) surfaced 305 t (300 long tons) submerged
Length:	36.90 m (121 ft 1 in) o/a 27.90 m (91 ft 6 in) pressure hull
Beam:	4.37 m (14 ft 4 in) o/a 3.85 m (12 ft 8 in) pressure hull
Draught:	3.75 m (12 ft 4 in)
Propulsion:	1 × propeller shaft 2 ×four-stroke 6-cylinder diesel engine, 270 PS (200 kW; 270 bhp) 2 × electric motor, 280 PS (210 kW; 280 shp)
Speed:	9.06 knots (16.78 km/h; 10.43 mph) surfaced 5.71 knots (10.57 km/h; 6.57 mph) submerged
Range:	7,030 nmi (13,020 km; 8,090 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Complement:	2 officers, 21 men
Armament:	2 × 50 cm (19.7 in) torpedo tubes 4 × torpedoes (later 6) 1 × 8.8 cm (3.5 in) deck gun
Service record as UB-42
Part of:	German Imperial Navy: Pola Flotilla, May – August 1916 Constantinople Flotilla, August – November 1916
Commanders:	Fritz Wernicke (March 1916 – May 1917) Kurt Schwarz (May 1917 – April 1918) Erich von Rohrscheidt (April – July 1918) Herbert Nolde (July – September 1918) Hans Georg Lübbe (September 1918) Cassius von Montigny (September – November 1918) Peter Ernst Eiffe (November 1918)
Victories:	10 ships (15,925 GRT) sunk 1 ship (97 GRT) taken as prize 1 warship (1,200 t) damaged

SM UB-42 was a Type UB II submarine or U-boat for the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-42 operated in the Mediterranean and the Black Seas during the war. She was broken up at Malta in 1920.

UB-42 was ordered in July 1915 and was laid down at the AG Weser shipyard in Bremen in September. UB-42 was 36.90 m (121 ft 1 in) in length and displaced between 270 and 305 tonnes (266 and 300 long tons), depending on whether surfaced or submerged. She was equipped to carry a complement of four torpedoes for her two bow torpedo tubes and had an 5 cm (1.97 in) deck gun. As part of a group of six submarines selected for Mediterranean service, UB-42 was broken into railcar sized components and shipped to Pola where she was assembled, launched and commissioned in March 1916.

In 21 patrols during the war, UB-42 sank ten ships of 15,925 gross register tons (GRT), captured one 97-ton vessel as a prize, and damaged Veronica a British Acacia-class sloop. In October 1916, UB-42 delivered five Georgians who had gold to help finance a Georgian independence movement. After the surrender of the Ottoman Empire in late October 1918, UB-42 fled to Sevastopol, where she was surrendered in November. UB-42 was taken to Malta, where she was broken up in 1920.

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