Contents

SMUC-24

History
German Empire
Name	UC-24
Ordered	29 August 1915[1]
Builder	Blohm & Voss, Hamburg[2]
Yard number	274[1]
Launched	4 March 1916[1]
Commissioned	15 August 1916[1]
Fate	Torpedoed and sunk by Circé on 24 May 1917[1]
General characteristics [3]
Class and type	Type UC II submarine
Displacement	417 t (410 long tons), surfaced 493 t (485 long tons), submerged
Length	49.35 m (161 ft 11 in) o/a 39.30 m (128 ft 11 in) pressure hull
Beam	5.22 m (17 ft 2 in) o/a 3.65 m (12 ft) pressure hull
Draught	3.68 m (12 ft 1 in)
Propulsion	2 × propeller shafts 2 × 6-cylinder, 4-stroke diesel engines, 500 PS (370 kW; 490 bhp) 2 × electric motors, 460 PS (340 kW; 450 shp)
Speed	11.6 knots (21.5 km/h; 13.3 mph), surfaced 7.0 knots (13.0 km/h; 8.1 mph), submerged
Range	9,430 nmi (17,460 km; 10,850 mi) at 7 knots (13 km/h; 8.1 mph) surfaced 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	26
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
Notes	35-second diving time
Service record
Part of:	I Flotilla 13 November 1916 – 21 February 1917 Pola Flotilla 21 February – 24 May 1917
Commanders:	Kptlt. Kurt Willich[4] 17 August 1916 – 24 May 1917
Operations:	4 patrols
Victories:	4 merchant ships sunk (9,815 GRT)

SMUC-24^{[Note 1]} was a German Type UC II minelaying submarineorU-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 29 August 1915 and was launched on 4 March 1916. She was commissioned into the German Imperial Navy on 15 August 1916 as SM UC-24. In four patrols UC-24 was credited with sinking 4 ships, either by torpedo or by mines laid. UC-24 was torpedoed and sunk by Circé off Cattaro on 24 May 1917.^[1] The wreck was found in late 2019 at a depth of 85m, 2 nautical miles from the mainland (Molunat, Dubrovnik, today's Croatia).

Design[edit]

Like all pre-UC-25 Type UC II submarines, UC-24 had a displacement of 417 tonnes (410 long tons) when at the surface and 493 tonnes (485 long tons) while submerged. She had a length overall of 49.35 m (161 ft 11 in), a beam of 5.22 m (17 ft 2 in), and a draught of 3.65 m (12 ft). The submarine was powered by two six-cylinder four-stroke diesel engines each producing 250 metric horsepower (180 kW; 250 shp) (a total of 500 metric horsepower (370 kW; 490 shp)), two electric motors producing 460 metric horsepower (340 kW; 450 shp), and two propeller shafts. She had a dive time of 35 seconds and was capable of operating at a depth of 50 metres (160 ft).^[3]

The submarine had a maximum surface speed of 11.6 knots (21.5 km/h; 13.3 mph) and a submerged speed of 7 knots (13 km/h; 8.1 mph). When submerged, she could operate for 55 nautical miles (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 9,430 nautical miles (17,460 km; 10,850 mi) at 7 knots (13 km/h; 8.1 mph). UC-24 was fitted with six 100 centimetres (39 in) mine tubes, eighteen UC 200 mines, three 50 centimetres (20 in) torpedo tubes (one on the stern and two on the bow), seven torpedoes, and one 8.8 cm (3.5 in) Uk L/30 deck gun. Her complement was twenty-six crew members.^[3]

Summary of raiding history[edit]

Date	Name	Nationality	Tonnage[Note 2]	Fate[5]
4 February 1917	Solbakken	Norway	2,616	Sunk
6 February 1917	Ellavore	Norway	2,733	Sunk
6 February 1917	Havgard	Norway	1,279	Sunk
11 July 1917	Siracusa	Kingdom of Italy	3,187	Sunk

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