Italian aviso Diana

History
Kingdom of Italy
Name	Diana
Builder	Cantieri Navali del Quarnaro, Fiume
Laid down	31 May 1939
Launched	20 May 1940
Completed	12 November 1940
Fate	Sunk by HMS Thrasher, 29 June 1942
General characteristics
Type	Fast aviso
Displacement	1,764 t (1,736 long tons) standard[1] 2,591 t (2,550 long tons) full load[1]
Length	113.9 m (373 ft 8 in) o.a.[2] 108.75 m (356 ft 9 in) p.p.[2]
Beam	11.70 m (38 ft 5 in)[2]
Draught	3.50 m (11 ft 6 in)[2]
Installed power	4 × three-drum boilers, 2 × geared turbines 30,000 shaft horsepower (22,000 kW)[2]
Propulsion	2 shafts
Speed	32 knots (37 mph; 59 km/h)[1]
Armament	2 × Cannon 102/35 Model 1914 guns 6 × Breda 20/65 mod. 35 AA guns

Diana was a fast aviso (Italian: avviso veloce) or sloop of the Italian Regia Marina which served during the Second World War. Originally designed as a yacht and despatch vessel for the Italian Head of Government, she was converted for military use.