Editing U and V-class destroyer (section)

{{Short description|Class of destroyers of the Royal Navy}}
{{Use dmy dates|date=July 2017}}
{{Use British English|date=July 2017}}
{{more citations needed|date=January 2013}}
{|{{Infobox ship begin|sclass=2}}
{{Infobox ship image
|Ship image= HMS Undaunted 1944 IWM FL 008812.jpg
|Ship caption={{HMS|Undaunted|R53|6}} in 1944
}}
{{Infobox ship class overview
|Name=U and V class
|Builders=*[[John Brown & Company]]
* [[Cammell Laird]]
* [[Fairfield Shipbuilding and Engineering Company]]
* [[J. Samuel White]]
* [[Swan Hunter]]
* [[John I. Thornycroft and Company]]
* [[Vickers-Armstrongs]]
|Operators=*{{navy|United Kingdom}}
* {{navy|Canada|naval-1911}}
|Class before={{sclass2|S and T|destroyer|4}}
|Class after={{sclass2|W and Z|destroyer|4}}
|Subclasses=
|Cost=
|Built range=1941–1944
|In service range=
|In commission range=1943–1982
|Total ships building=
|Total ships planned=
|Total ships completed=16
|Total ships cancelled=
|Total ships active=
|Total ships laid up=
|Total ships lost=1
|Total ships retired=
|Total ships preserved=
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=
|Ship type=[[Destroyer]]
|Ship displacement=*{{convert|1777|LT|t|0}} standard
* {{convert|2058|LT|t|0|abbr=on}} full load
|Ship length={{convert|363|ft|m|abbr=on}}
|Ship beam={{convert|35|ft|8|in|m|abbr=on}}
|Ship height=
|Ship draught={{convert|10|ft|m|abbr=on}}
|Ship depth=
|Ship propulsion=*2 × Admiralty 3-drum [[water-tube boiler]]s
* Geared steam turbines, {{convert|40000|shp|0|abbr=on}}
* 2 shafts
|Ship speed={{convert|36.75|kn|mph km/h|lk=in|1}}<ref>{{cite book|title=Conway's All the World's Fighting Ships 1922-1946 |editor=Robert Gardiner |publisher=Naval Institute Press |pages=42}}</ref>
|Ship range={{convert|4860|nmi|km|abbr=on|lk=in}} at {{convert|20|kn|km/h|abbr=on}}
|Ship complement= 180 (225 in flotilla leader)
|Ship sensors=
|Ship EW=
|Ship armament=*''Original configuration'' :
* 4 × [[4.7 inch QF Mark IX|QF 4.7-inch (120-mm) Mk IX guns]] in single mountings [[British ordnance terms#CP|CP]] Mk.XXII
* 2 × [[Bofors 40 mm Automatic Gun L/60|QF 40 mm Bofors]] guns in twin mount Mk.IV
* 6 × [[Oerlikon 20 mm cannon|QF 20 mm Oerlikon]] guns; 2 × twin mounts Mk.V, 2 × single mounts Mk.III
* 2 × quadruple tubes for [[British 21 inch torpedo|{{convert|21|inch|mm|adj=on|0}} torpedo]]es Mk.IX
|Ship armour=
|Ship notes=
}}
|}

The '''U and V class''' was a [[ship class|class]] of sixteen [[destroyer]]s of the [[Royal Navy]] launched in 1942–1943. They were constructed in two [[flotilla]]s, each with names beginning with "U-" or "V-" (although there was a return to the pre-war practice of naming the designated [[flotilla leader]] after a famous naval figure from history to honour the lost ships ''Grenville'' and ''Hardy''). The hull was nearly identical to the preceding ships of the S and T classes, but the U and V class ships had different bridge and armament fits. The flotillas constituted the 7th Emergency Flotilla and 8th Emergency Flotilla, built under the War Emergency Programme. These ships used the [[Fuze Keeping Clock]] HA Fire Control Computer.<ref>{{cite book|title=Destroyer Weapons of World War II |last=Hodges |first=Peter |last2=Friedman |first2=Norman |publisher=Harper Collins |date=1979 |isbn=0-85177-137-8}}</ref>