Re Umberto-class battleship

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Class overview
Name: Re Umberto
Operators:  Regia Marina
Preceded by: Ruggiero di Lauria class
Succeeded by: Ammiraglio di Saint Bon class
Subclasses: Sardegna
Built: 1884–1895
In commission: 1893–1918
Completed: 3
Scrapped: 3
General characteristics
Class & type: Re Umberto-class battleship
Displacement: 13,673 long tons (13,892 t) normal
15,454 long tons (15,702 t) full load
Length: 418 ft 7.5 in (127.6 m)
Beam: 76 ft 10.5 in (23.4 m)
Draft: 30 ft 6 in (9.3 m)
Installed power: 19,500 ihp (14,541 kW)
Propulsion: 2 shafts, vertical compound steam engines, 18 cylindrical boilers
Speed: 18.5 knots (21.3 mph; 34.3 km/h)
Range: 4,000–6,000 nautical miles (7,408–11,112 km)
Complement: 733

2 × 2 - 13.5-inch (343 mm)/30 guns
8 × 1 - Elswick Ordnance Company 6-inch (152 mm)/40 guns
16 × 1 - EOC 120-mm guns
16 × 1 - 57-millimeter (2.2 in) six-pounder guns
10 × 1 - 37-millimeter (1.5 in) guns

5 × 1 - 17.7-inch (450 mm) torpedo tubes
Armor: Belt and side: 4 in (102 mm)
Deck: 3 in (76.2 mm)
Barbettes: 13.75 in (349 mm)
Turrets: 4 in (102 mm)
Conning tower: 11.8 in (300 mm)
Casemates: 2 in (51 mm)

The Re Umberto class were a group of battleships built for the Italian Navy in the 1880s. All three ships of the class saw service during World War I in secondary roles.


Right elevation and deck plan from Brassey's Naval Annual; shaded areas show the extent of the armor layout

The first two ships of the class used vertical compound steam engines. They had three funnels, but, unusually, the two forward funnels were side-by-side. Sardegna, the last ship of the class, slightly larger than her sisters and she was the first Italian ship to use vertical triple expansion steam engines.


Barbette with 13.5-inch gun

The guns were British-made of the same type as fitted to the Royal Sovereign-class battleships


Re Umberto[edit]

Re Umberto at Brindisi in 1917.

Re Umberto was named after King Umberto I of Italy. She was built by the Castellammare Naval Shipyard. She was laid down on 10 July 1884, launched on 17 October 1888, and completed on 16 February 1893. She was laid up in Genoa in 1912 and became a depot ship. Towed to La Spezia in June 1915, after having been stricken from the Navy List on 10 May 1914, she became a depot ship for the dreadnought Andrea Doria. She was reinstated on 9 December 1915 and became a floating battery at Brindisi and, later, Valona, Albania. In 1918 Re Umberto was tasked to lead the planned assault on the primary Austro-Hungarian naval base at Pola and modified for the role by the removal of her armament and the addition of eight 3-inch guns with gun shields as well as a number of trench mortars. A special saw and cutters were also installed to deal with the harbor boom and net defenses. The war ended before the Italians could carry out the attack and she was stricken on 4 July 1920.[1]


Sicilia was named after the island of Sicily. She was built by the Venice Naval Shipyard. She was laid down on 3 November 1884, launched on 6 July 1891, and completed on 4 May 1895. She was stricken on 9 July 1914 and became a depot ship at Taranto before becoming a repair ship during the war. She was stricken again in 1923.[1]


Sardegna was named after the island of Sardinia. She was built by the La Spezia Naval Shipyard. She was laid down on 24 October 1885, launched on 20 September 1890, and completed on 16 February 1895. She was stricken on 4 January 1923.[1]


  1. ^ a b c Gardiner & Gray, p. 342


  • Fraccaroli, Aldo (1970). Italian Warships of World War I. London: Ian Allan. ISBN 978-0-7110-0105-3. 
  • Gardiner, Robert; Gray, Randal, eds. (1979). Conway's All the World's Fighting Ships: 1860–1905. Annapolis: Conway Maritime Press. ISBN 0-85177-133-5. 

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