Italian submarine F5

	F5 immediately after launching on 12 August 1916. She is dressed overall.
History
Italy
Name	F5
Builder	FIAT-San Giorgio, La Spezia, Italy
Laid down	23 May 1915
Launched	12 August 1916
Commissioned	26 November 1916
Decommissioned	20 July 1929
Identification	Pennant number F5
Motto	Te desposamus mare (We marry you, O sea)
Fate	Scrapped
General characteristics
Class & type	F-class submarine
Displacement	262 long tons (266 t) (surfaced); 319 long tons (324 t) (submerged);
Length	45.6 m (149 ft 7 in) (overall); 45.1 m (148 ft 0 in) (between perpendiculars);
Beam	4.2 m (13 ft 9 in)
Draught	3.1 m (10 ft 2 in)
Propulsion	2 × 670 bhp (500 kW) Fiat diesel engines; 2 × 500 hp (373 kW) Savigliano electric motors; 2 x shafts; 15 tons diesel fuel;
Speed	12.5 knots (23.2 km/h; 14.4 mph) (surfaced); 8.2 knots (15.2 km/h; 9.4 mph) (submerged);
Range	1,600 nmi (3,000 km; 1,800 mi) at 8.5 knots (15.7 km/h; 9.8 mph) (surfaced); 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) (submerged);
Test depth	45 metres (148 feet)
Complement	26 (2 officers, 24 men)
Armament	2 × 450 mm (17.7 in) torpedo tubes (2 bow); 4 x torpedoes; 1 × 76 mm (3 in) deck gun;
Notes	SOURCE:

F5 was an F-class submarine in commission in the Italian Regia Marina (Royal Navy) from 1916 to 1929. She took part in the Adriatic Campaign of World War I.

Design

Construction and commissioning

F5 was laid down by FIAT-San Giorgio at La Spezia, Italy, on 23 May 1915. She was launched on 12 August 1916 and commissioned on 26 November 1916.

Service history

After completing her workups in the Gulf of La Spezia, F5 was assigned in February 1917 to the 2nd Submarine Squadron in the Ancona Maritime Command. Based at Venice and Porto Corsini, she operated in the Adriatic Sea during the Adriatic Campaign of World War I. Before the war ended in November 1918 she completed 26 war patrols along Austria-Hungary's maritime trade routes and in the approaches to Trieste and Pola, but without significant results. In the immediate aftermath of the war, she took part in the Italian occupation of Umag on the coast of Istria.

Early in 1919, F5 was assigned to a new operational base at Brindisi, but in May 1919 she was transferred to Naples. She participated in the naval maneuvers of 1924, 1925, 1926, and 1927, which required her to make long cruises in the waters off Sicily.

F5 was decommissioned on 20 July 1929. She subsequently was scrapped.

References

Citations

1 2 3 4 5 "Regi Sommergibili F7-F8-F9-F10" [Royal Submarines F7-F8-F9-F10]. Grupsom - Sommergibili Mediterranei (in Italian). Archived from the original on 4 March 2016. Retrieved 8 September 2026.
1 2 3 Conway's 1906–1921 1985, p. 277.
1 2 Conway's 1922–1946 1980, p. 288.
1 2 sonar (28 February 2008). "Classe F (1915)" [F Class (1915)]. Betasom - XI Gruppo Sommergibili Atlantici (in Italian). Retrieved 27 August 2026.
1 2 3 "F 5". marina.difesa.it (in Italian). Marina Militare. Retrieved 9 September 2026.

Bibliography

Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
Favre, Franco (2008). La Marina nella Grande Guerra. Le operazioni aeree, navali, subacquee e terrestri in Adriatico [The Navy in the Great War: Aerial, Naval, Underwater, and Land Operations in the Adriatic] (in Italian). Udine: Gaspari Editore.
Gardiner, Robert; Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships 1906–1921. London, UK: Conway Maritime Press. ISBN 978-0851772455.
Giorgerini, Giorgio (2002). Uomini sul fondo. Storia del sommergibilismo italiano dalle origini a oggi [Men at the Bottom: History of Italian Submarining from its Origins to Today] (in Italian). Milano: Arnoldo Mondadori Editore. ISBN 978-8-80450-537-2.
Maffi, Mario (1919). La Vittoria in Adriatico [The Victory in the Adriatic] (in Italian). Milano: Alfieri e Lacroix.

[xmasgrupsom.com-1] 1 2 3 4 5 "Regi Sommergibili F7-F8-F9-F10" [Royal Submarines F7-F8-F9-F10]. Grupsom - Sommergibili Mediterranei (in Italian). Archived from the original on 4 March 2016. Retrieved 8 September 2026.

[FOOTNOTE''Conway's_1906–1921''1985277-2] 1 2 3 Conway's 1906–1921 1985, p. 277.

[FOOTNOTE''Conway's_1922–1946''1980288-3] 1 2 Conway's 1922–1946 1980, p. 288.

[betasomfclass-4] 1 2 sonar (28 February 2008). "Classe F (1915)" [F Class (1915)]. Betasom - XI Gruppo Sommergibili Atlantici (in Italian). Retrieved 27 August 2026.

[marinadifesaf5-5] 1 2 3 "F 5". marina.difesa.it (in Italian). Marina Militare. Retrieved 9 September 2026.