The Impetuoso class were the first post-World War II destroyers built for the Italian Navy. The two ships were ordered in February 1950, entered service in 1958 and were retired in the early 1980s.
The Impetuoso class hull design was based on the uncompleted World War II . The class has a length of 127.6m (418.6feet) with length between perpendiculars of 123.4m (404.9feet), a beam of 13.2m (43.3feet), with a draught of 4.5m (14.8feet), and their displacement were 2775abbr=onNaNabbr=on standard and 3810abbr=onNaNabbr=on at full load. The ships was powered by two-shaft geared steam turbines with four Foster Wheeler boilers, with total power output of 65000shp. Impetuoso class has a maximum speed of 34kn, with range of 3000NM while cruising at 16kn. The ships has a complement of 315 personnel.
The class were armed with four 50NaN0/38 caliber guns in two twin-gun turrets, 16 Bofors 40 mm/60 guns consisted of two quad-mounts and four twin-mounts, and one 305 mm Menon anti-submarine mortar. They were also armed with two fixed 5330NaN0 torpedo tubes, which was later replaced by two 12.750NaN0 triple-tubes with Mark 44 torpedoes. There was a proposed modernization program in the late 1960s for the ships to be rearmed with a single lightweight 5"/54 caliber Mark 45 gun forward and RIM-24 Tartar surface-to-air missile launcher in the aft.
The ships electronics and sensors consisted of SPS-6 air-search radar, SG-6B surface-search radar, SPG-25 and SPG-34 fire control radar, and SQS-11 search sonar, which was later replaced with SQS-4 sonar. As of 1980, Impetuoso was equipped with WLR-1 electronic support measure system with noise jammer, while Indomito appears to be not equipped with any electronic warfare system.
| Name | Pennant number | Builder | Laid down | Launched | Commissioned | Fate | |
|---|---|---|---|---|---|---|---|
| D 558 | CNR, Riva Trigoso | 7 May 1952 | 16 September 1956 | 25 January 1958 | Stricken 1983 | ||
| D 559 | Ansaldo, Livorno | 24 April 1952 | 9 August 1955 | 23 February 1958 | Stricken 3 November 1980 |