Impetuoso-class destroyer

{{Short description|Italian Navy ship class}}

{{Use dmy dates|date=August 2019}}

{{Infobox ship begin}}

{{Infobox ship image

|Ship image= Italian destroyer Impetuoso (D558) comes alongside USS Kalamazoo (AOR-6) in the Mediterranean Sea, in June 1977.jpg

|Ship caption=Impetuoso alongside {{USS|Kalamazoo|AOR-6|6}} in the Mediterranean Sea in June 1977

}}

{{Infobox ship class overview

|Name=Impetuoso class

|Builders=*Cantiere navale di Riva Trigoso

|Operators={{navy|Italy|navy-1947}}

|Class before={{sclass|San Giorgio|destroyer|4}}

|Class after={{sclass|Impavido|destroyer|4}}

|Subclasses=

|Cost=

|Built range=1952–1958

|In commission range=1958–1983

|Total ships building=

|Total ships planned=

|Total ships completed=2

|Total ships cancelled=

|Total ships active=

|Total ships laid up=

|Total ships lost=

|Total ships retired=2

|Total ships preserved=

}}

{{Infobox ship characteristics

|Hide header=

|Header caption=

|Ship type=Destroyer

|Ship displacement=* 2,775 tons standard

  • 3,810 tons full load

|Ship length={{convert|127.6|m|ftin|abbr=on}}

|Ship beam={{convert|13.2|m|ftin|abbr=on}}

|Ship height=

|Ship draught={{convert|4.5|m|ftin|abbr=on}}

|Ship power=

|Ship propulsion=* 2 shaft geared turbines

  • 4 × Foster Wheeler boilers providing {{convert|65,000|hp|abbr=on}}

|Ship speed={{convert|34|kn|lk=in}}

|Ship range={{convert|3,000|nmi|abbr=on}} at {{convert|16|kn|abbr=on}}

|Ship endurance=

|Ship complement=315

|Ship sensors=*SPS-6 air-search radar

  • SG-6B surface-search radar
  • SPG-25 and SPG-34 fire control radar
  • SQS-4 search sonar

|Ship EW=WLR-1 ESM (only Impetuoso by 1980)

|Ship armament=* 2 × twin 127 mm/38 caliber gun

|Ship armour=

|Ship aircraft=

|Ship aircraft facilities=

|Ship notes=

}}

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.{{Harvnb|Gardiner|Chumbley|1995|p=206}}

Design

The Impetuoso class hull design was based on the uncompleted World War II {{sclass2|Comandanti Medaglie d'Oro|destroyer}}. 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}}. The ships has a complement of 315 personnel.

The class were armed with four 5-inch/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 {{convert|533|mm|in|0|adj=on}} torpedo tubes, which was later replaced by two {{convert|12.75|in|mm|0|adj=on}} 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.

Ships

class="wikitable"
Name

!style="line-height:1.2em;"| Pennant
number

! Builder

! Laid down

! Launched

! Commissioned

! Fate

{{ship|Italian destroyer|Impetuoso|D 558|2}}

|style="text-align:center;"| D 558

| CNR, Riva Trigoso

| 7 May 1952

| 16 September 1956

| 25 January 1958

| Stricken 1983

{{ship|Italian destroyer|Indomito|D 559|2}}

|style="text-align:center;"| D 559

| Ansaldo, Livorno

| 24 April 1952

| 9 August 1955

| 23 February 1958

| Stricken 3 November 1980

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

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 }}