Editing A- and B-class destroyer (section)

{{short description|1929 class of British destroyers}}
{{for multi|the earlier A class|A-class destroyer (1913)|the earlier B class|B-class destroyer (1913)}}
{{Use dmy dates|date=January 2018}}
{{Use British English|date=January 2018}}
{|{{Infobox ship begin|sclass=2}}
{{Infobox ship image
|Ship image=File:HMS Basilisk (H11).jpg
|Ship caption=[[HMS Basilisk (H11)|''Basilisk'']], 21 October 1937
}}
{{Infobox ship class overview
|Name=A and B class
|Builders=
|Operators=*{{navy|United Kingdom}}
* {{naval|Canada|1911}}
* {{navy|Kingdom of Greece|1935-naval|name=Royal Hellenic Navy}}
|Class before={{HMS|Ambuscade|D38|2}} and {{HMS|Amazon|D39|2}}
|Class after={{sclass2|C and D|destroyer|4}}
|Subclasses=A, B
|Cost=
|Built range=1928–1931
|In service range= 1930–1945
|In commission range= 
|Total ships completed=20
|Total ships lost=10
|Total ships scrapped=10
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=(as built)
|Ship type=[[Destroyer]]
|Ship displacement=*{{convert|1350|-|1360|LT|t|lk=on}} ([[Standard displacement|standard]])
* {{convert|1778|-|1790|LT|t}} ([[deep load]])
|Ship length={{convert|323|ft|m|abbr=on}} ([[Length overall|o/a]])
|Ship beam={{convert|32|ft|3|in|m|abbr=on}}
|Ship draught={{convert|12|ft|3|in|m|abbr=on}}
|Ship power=*3 × [[Admiralty 3-drum boiler]]s
* {{cvt|34000|shp|kW|lk=on}}
|Ship propulsion=2 × shafts; 2 × geared [[steam turbine]]s
|Ship speed={{convert|35|kn|lk=in}}
|Ship range={{convert|4800|nmi|lk=in|abbr=on}} at {{convert|15|kn}}
|Ship complement=138
|Ship armament=
* 4 × single [[4.7 inch QF Mark IX|4.7 in (120&nbsp;mm) guns]]
* 2 × single [[QF 2 pounder naval gun|2 pdr ({{cvt|40|mm}})]] [[AA gun]]s
* 2 × quadruple [[British 21-inch torpedo|21 in (533&nbsp;mm)]] [[torpedo tubes]] }}
{{Infobox ship characteristics
|Hide header=
|Header caption=''Saguenay'' and ''Skeena'' (where different)
|Ship class=
|Ship displacement=*{{convert|1337|LT|t}} ([[Standard displacement|standard]])
* {{convert|1805|LT|t}} ([[deep load]])
|Ship length={{convert|321|ft|m|abbr=on}} (o/a)
|Ship draught={{convert|12|ft|3|in|m|abbr=on}}
|Ship propulsion= {{convert|32000|shp|abbr=on}}
|Ship range= {{convert|5000|nmi|abbr=on}} at 15&nbsp;knots
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=''Codrington'' (A-class flotilla leader)
|Ship displacement=*{{convert|1540|LT|t}} (standard)
* {{convert|2012|LT|t}} (deep load)
|Ship length={{convert|343|ft|m|abbr=on}} (o/a)
|Ship beam={{convert|33|ft|9|in|m|abbr=on}}
|Ship power= {{convert|39000|shp|abbr=on}}
|Ship complement= 185
|Ship armament= 5 × single [[4.7 inch QF Mark IX|4.7 in guns]]
|Ship notes=(where different)
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=''Keith'' (B-class flotilla leader)
|Ship displacement=*{{convert|1400|LT|t}} (standard)
* {{convert|1821|LT|t}} (deep load)
|Ship complement= 157
|Ship notes=(where different)
}}
|}

The '''A- and B-class destroyers''' were a group of 18 [[destroyer]]s built for the [[Royal Navy]] during the late 1920s, with two additional ships built for the [[Royal Canadian Navy]]. The British ships were divided into two [[flotilla]]s of eight destroyers, each with a [[flotilla leader]].