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{{Short description|Italian Navy ship class}}
{{Use dmy dates|date=September 2010}}
{{unreferenced|date=June 2008}}
{{Use dmy dates|date=August 2019}}


{|{{Infobox ship begin}}
{|{{Infobox ship begin}}
{{Infobox ship image
{{Infobox ship image
|Ship image= Italian destroyer Impetuoso (D558) comes alongside USS Kalamazoo (AOR-6) in the Mediterranean Sea, in June 1977.jpg
|Ship image=
|Ship caption=''Impetuoso'' alongside {{USS|Kalamazoo|AOR-6|6}} in the Mediterranean Sea in June 1977
|Ship caption=
}}
}}
{{Infobox ship class overview
{{Infobox ship class overview
|Name=''Impetuoso'' class
|Name=''Impetuoso'' class
|Builders=
|Builders=*[[Cantiere navale di Riva Trigoso]]
*[[Cantiere navale fratelli Orlando]]
|Operators={{navy|ITA}}
|Operators={{navy|Italy|navy-1947}}
|Class before={{sclass2-|Comandanti Medaglie d'Oro|destroyer|4}} (planned)<br/>{{sclass2-|Soldati|destroyer|4}} (actual)
|Class after={{sclass-|Impavido|destroyer|4}}
|Class before={{sclass|San Giorgio|destroyer|4}}
|Class after={{sclass|Impavido|destroyer|4}}
|Subclasses=
|Subclasses=
|Cost=
|Cost=
|Built range=
|Built range=1952–1958
|In service range= 1957
|In commission range=1958–1983
⚫
|Total ships building=
|In commission range=1956–1983
⚫
|Total ships building=
|Total ships planned=
|Total ships planned=
|Total ships completed=2
|Total ships completed=2
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{{Infobox ship characteristics
{{Infobox ship characteristics
|Hide header=
|Hide header=
|Header caption=
|Header caption=
|Ship type=[[Destroyer]]
|Ship type=[[Destroyer]]
|Ship displacement=* 2,775 tons standard
|Ship tonnage=
|Ship displacement=2,775 tons standard<br>3,810 tons full load
* 3,810 tons full load
⚫
|Ship length={{convert|127.6|m|ftin|abbr=on}}
|Ship tons burthen=
|Ship length={{convert|127.6|m|abbr=on}}
|Ship beam={{convert|13.2|m|ftin|abbr=on}}
⚫
|Ship beam={{convert|13.2|m|abbr=on}}
|Ship height=
|Ship height=
|Ship draught={{convert|4.5|m|abbr=on}}
|Ship draught={{convert|4.5|m|ftin|abbr=on}}
|Ship depth=
|Ship hold depth=
|Ship decks=
|Ship deck clearance=
|Ship ramps=
|Ship ice class=
|Ship power=
|Ship power=
|Ship propulsion=2 shaft geared turbines <br>4 Foster Wheeler boilers providing 65,000 hp
|Ship propulsion=* 2 shaft geared turbines
* 4 × Foster Wheeler boilers providing {{convert|65,000|hp|abbr=on}}
|Ship speed={{convert|34|kn|abbr=on}}
|Ship speed={{convert|34|kn|lk=in}}
|Ship range={{convert|3,000|nmi|abbr=on}} at {{convert|16|kn|abbr=on}}
|Ship range={{convert|3,000|nmi|abbr=on}} at {{convert|16|kn|abbr=on}}
|Ship endurance=
|Ship endurance=
|Ship test depth=
|Ship boats=
|Ship capacity=
|Ship troops=
|Ship complement=315
|Ship complement=315
|Ship sensors=*[[AN/SPS-6|SPS-6]] air-search radar
|Ship crew=
*SG-6B surface-search radar
|Ship time to activate=
*SPG-25 and SPG-34 fire control radar
|Ship sensors=
*SQS-4 search sonar
|Ship EW=
|Ship EW=[[AN/SLQ-32 electronic warfare suite|WLR-1]] ESM (only ''Impetuoso'' by 1980)
|Ship armament=2 × twin [[5"/38 caliber gun|127/38 mm]] [[naval artillery|gun]]<br> 2 × quad [[Bofors 40 mm gun]]s<br>4 × twin [[Bofors 40 mm gun]]s<br>2 × 533&nbsp;mm double torpedo launchers
|Ship armament=* 2 × twin [[5"/38 caliber gun|127 mm/38 caliber]] [[naval artillery|gun]]
* 2 × quad [[Bofors 40 mm Automatic Gun L/60|Bofors 40 mm/60 gun]]s
* 4 × twin Bofors 40 mm/60 guns
* 1 × 305 mm [[Menon (weapon)|Menon]] ASW mortar
* 2 × triple {{convert|12.75|in|mm|0|adj=on}} torpedo launchers with [[Mark 44 torpedo]]es
|Ship armour=
|Ship armour=
|Ship aircraft=
|Ship aircraft=
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|}
|}


The '''''Impetuoso'' class''' were the first post-[[World War II]] [[destroyer]]s built for the [[Marina Militare|Italian Navy]]. The hull design was based on the uncompleted ''Comandante''-class destroyers but American equipment (guns, radar, machinery) was used. A scheme to install guided missiles during a modernisation programme was proposed but not carried out. The two ships were ordered in 1952, entered service in 1957 and were retired in the early 1980s.
The '''''Impetuoso'' class''' were the first post-[[World War II]] [[destroyer]]s built for the [[Italian Navy]]. The two ships were ordered in February 1950, entered service in 1958 and were retired in the early 1980s.<ref name="conwayp206">{{Harvnb|Gardiner|Chumbley|1995|p=206}}</ref>


==Ships==
==Design==
The ''Impetuoso'' class hull design was based on the uncompleted World War II {{sclass2|Comandanti Medaglie d'Oro|destroyer}}.<ref name="conwayp206"/> The class has a length of {{convert|127.6|m|ft|abbr=on}} with [[length between perpendiculars]] of {{convert|123.4|m|ft|abbr=on}}, a beam of {{convert|13.2|m|ft|abbr=on}}, with a draught of {{convert|4.5|m|ft|abbr=on}}, and their displacement were {{convert|2,775|LT|t|abbr=on|lk=in}} standard and {{convert|3,810|LT|t|abbr=on|lk=in}} at full load. The ships was powered by two-shaft geared steam turbines with four [[Foster Wheeler]] boilers, with total power output of {{convert|65,000|shp|MW}}. ''Impetuoso'' class has a maximum speed of {{convert|34|kn|km/h}}, with range of {{convert|3,000|NM|km}} while cruising at {{convert|16|kn|km/h}}.<ref name="conwayp206"/> The ships has a complement of 315 personnel.


The class were armed with four [[5-inch/38-caliber gun|{{convert|5|in|mm|0|adj=on}}/38 caliber gun]]s in two twin-gun turrets, 16 [[Bofors 40 mm Automatic Gun L/60|Bofors 40 mm/60 gun]]s consisted of two quad-mounts and four twin-mounts, and one 305&nbsp;mm [[Menon (weapon)|Menon]] [[anti-submarine mortar]]. They were also armed with two fixed {{convert|533|mm|in|0|adj=on}} [[torpedo tube]]s, which was later replaced by two {{convert|12.75|in|mm|0|adj=on}} triple-tubes with [[Mark 44 torpedo]]es.<ref name="conwayp206"/> 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.<ref name="conwayp206"/>

The ships electronics and sensors consisted of [[AN/SPS-6|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.<ref name="conwayp206"/> As of 1980, ''Impetuoso'' was equipped with [[AN/SLQ-32 electronic warfare suite|WLR-1]] electronic support measure system with noise jammer, while ''Indomito'' appears to be not equipped with any electronic warfare system.<ref name="conwayp206"/>

==Ships==
{| class="wikitable"
{| class="wikitable"
|-
|-
! Name
! Name
! Pennant number
!style="line-height:1.2em;"| Pennant<br />number
! Builder
! Builder
! Laid down<ref name="conwayp206"/>
!Commissioned
! Launched<ref name="conwayp206"/>
!Fate
! Commissioned<ref name="conwayp206"/>
! Fate<ref name="conwayp206"/>
|-
|-
| {{ship|Italian destroyer|Impetuoso|D558|2}}
| {{ship|Italian destroyer|Impetuoso|D 558|2}}
|style="text-align:center;"| D&nbsp;558
| D558
| CNR Riva Trigoso
| [[Cantiere navale di Riva Trigoso|CNR]], [[Riva Trigoso]]
| 7 May 1952
| 16 September 1956
| 25 January 1958
| 25 January 1958
| Decommissioned 1983
| Stricken 1983
|-
|-
| {{ship|Italian destroyer|Indomito|D559|2}}
| {{ship|Italian destroyer|Indomito|D 559|2}}
|style="text-align:center;"| D 559
| D559
| [[Cantiere navale fratelli Orlando|Ansaldo, Livorno]]
| [[Cantiere navale fratelli Orlando|Ansaldo, Livorno]]
| 24 April 1952
| 9 August 1955
| 23 February 1958
| 23 February 1958
| Decommissioned 1980
| Stricken 3 November 1980
|}
|}

<gallery widths="250" mode="packed">
File:Italian destroyer Impetuoso (D558) is refueld USS Kalamazoo (AOR-6) in the Mediterranean Sea, in May 1977.jpg|Aft view of ''Impetuoso'' in May 1977
</gallery>

==References==
{{reflist}}

==Bibliography==
*{{cite book|editor-last1=Gardiner |editor-first1=Robert |editor-last2=Chumbley |editor-first2=Stephen |title=Conway's All the World's Fighting Ships 1947–1995 |year=1995 |publisher=Naval Institute Press |location=Annapolis, Maryland, USA |isbn=1-55750-132-7 }}

==External links==
{{commons category|Impetuoso class destroyer}}
* [https://www.marina.difesa.it/noi-siamo-la-marina/mezzi/mezzi-storici/Pagine/EFGHI/impetuoso02.aspx Destroyer Impetuoso] Marina Militare website

{{Portal bar|Italy|Engineering}}


{{Impetuoso class destroyer}}
{{Impetuoso class destroyer}}
{{Italian destroyers, frigates and corvettes post-1945}}
{{Italian destroyers, frigates and corvettes post-1945|noshipclass=yes}}
{{Ship classes of the Marina Militare}}


[[Category:Impetuoso-class destroyers| ]]
[[Category:Impetuoso-class destroyers| ]]

Latest revision as of 02:45, 13 September 2023

Impetuoso alongside USS Kalamazoo in the Mediterranean Sea in June 1977
Class overview
NameImpetuoso class
Builders
Operators Italian Navy
Preceded bySan Giorgio class
Succeeded byImpavido class
Built1952–1958
In commission1958–1983
Completed2
Retired2
General characteristics
TypeDestroyer
Displacement
  • 2,775 tons standard
  • 3,810 tons full load
Length127.6 m (418 ft 8 in)
Beam13.2 m (43 ft 4 in)
Draught4.5 m (14 ft 9 in)
Propulsion
  • 2 shaft geared turbines
  • 4 × Foster Wheeler boilers providing 65,000 hp (48,000 kW)
Speed34 knots (63 km/h; 39 mph)
Range3,000 nmi (5,600 km; 3,500 mi) at 16 kn (30 km/h; 18 mph)
Complement315
Sensors and
processing systems
  • SPS-6 air-search radar
  • SG-6B surface-search radar
  • SPG-25 and SPG-34 fire control radar
  • SQS-4 search sonar
Electronic warfare
& decoys		WLR-1 ESM (only Impetuoso by 1980)
Armament

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.[1]

Design

[edit]

The Impetuoso class hull design was based on the uncompleted World War II Comandanti Medaglie d'Oro-class destroyer.[1] The class has a length of 127.6 m (419 ft) with length between perpendiculars of 123.4 m (405 ft), a beam of 13.2 m (43 ft), with a draught of 4.5 m (15 ft), and their displacement were 2,775 long tons (2,820 t) standard and 3,810 long tons (3,870 t) at full load. The ships was powered by two-shaft geared steam turbines with four Foster Wheeler boilers, with total power output of 65,000 shaft horsepower (48 MW). Impetuoso class has a maximum speed of 34 knots (63 km/h), with range of 3,000 nautical miles (5,600 km) while cruising at 16 knots (30 km/h).[1] The ships has a complement of 315 personnel.

The class were armed with four 5-inch (127 mm)/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 533-millimetre (21 in) torpedo tubes, which was later replaced by two 12.75-inch (324 mm) triple-tubes with Mark 44 torpedoes.[1] 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.[1]

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.[1] 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.[1]

Ships

[edit]
Name Pennant
number 		Builder Laid down[1] Launched[1] Commissioned[1] Fate[1]
Impetuoso D 558 CNR, Riva Trigoso 7 May 1952 16 September 1956 25 January 1958 Stricken 1983
Indomito D 559 Ansaldo, Livorno 24 April 1952 9 August 1955 23 February 1958 Stricken 3 November 1980
  • Aft view of Impetuoso in May 1977
    Aft view of Impetuoso in May 1977

References

[edit]
  1. ^ a b c d e f g h i j k Gardiner & Chumbley 1995, p. 206

Bibliography

[edit]
  • Gardiner, Robert; Chumbley, Stephen, eds. (1995). Conway's All the World's Fighting Ships 1947–1995. Annapolis, Maryland, USA: Naval Institute Press. ISBN 1-55750-132-7.
[edit]
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