Editing Valiant-class submarine (section)

{{Short description|1966 class of British fleet submarines}}
{{Use dmy dates|date=January 2015}}
{{Use British English|date=January 2015}}
{|{{Infobox ship begin}}
{{Infobox ship image
|Ship image=Valiant class submarine 1986.jpeg
|Ship caption=A ''Valiant''-class submarine
}}
{{Infobox ship class overview
|Name=
|Builders=[[Vickers Armstrong]]
|Operators={{navy|United Kingdom}}
|Class before= {{HMS|Dreadnought|S101|6}}
|Class after= {{sclass|Churchill|submarine|4}}
|Subclasses=
|Cost=
|Built range=
|In service range=   
|In commission range=18 July 1966 – 12 August 1994
|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=[[Nuclear submarine]]
|Ship displacement=*{{convert|4400|LT|t|lk=in|abbr=on}} surfaced
*{{convert|4900|LT|t|abbr=on}} submerged
|Ship length= {{convert|285|ft|m|abbr=on}} 
|Ship beam= {{convert|33|ft|3|in|m|abbr=on}} 
|Ship height=
|Ship draught= {{convert|27|ft|m|abbr=on}} 
|Ship depth=
|Ship propulsion=*1 × [[Rolls-Royce PWR|Rolls-Royce pressurised water reactor]]
*2 × steam turbines
*1 shaft
|Ship speed=*{{convert|20|kn|mph km/h|lk=in}} surfaced
*{{convert|29|kn|mph km/h}} submerged
|Ship range=Unlimited, except by food supplies
|Ship test depth=
|Ship complement=103
|Ship time to activate=
|Ship sensors=
|Ship EW=
|Ship armament=*''Originally'' :
*6 × {{convert|21|in|mm|0|abbr=on}} bow [[torpedo tube]]s
*32 × [[List of torpedoes#21 inch Mark VIII|Mark VIII]] and [[Mark 24 Tigerfish|Tigerfish]] torpedoes
*''or''
*64 × Mk.5 and Mk.6 [[Naval mine|mines]]
*''Later '' :
*26 × torpedoes
*6 × UGM-84B [[Boeing Harpoon|Harpoon]] [[Anti-ship missile]]s
*''or''
*[[Stonefish (mine)|Stonefish]] and Sea Urchin mines
|Ship armour=
|Ship notes=
}}
|}

The '''''Valiant'' class''' were a class of [[Nuclear marine propulsion|nuclear-powered]] [[fleet submarine]]s in service with the [[Royal Navy]] from the mid-1960s until 1994. They were the first fully British nuclear fleet submarine; the earlier {{HMS|Dreadnought|S101|6}} used an American nuclear reactor. There were only two boats in the class, the first, ''Valiant'' (the nameship) commissioned in 1966 three years after ''Dreadnought'', and ''Warspite'' the following year. Both were built by [[Vickers]] at [[Barrow-in-Furness]].