Editing V and W-class destroyer (section)

==Thornycroft V and W class==
{|{{Infobox ship begin|sclass=2}}
{{Infobox ship characteristics
|Hide header=
|Header caption= (Thornycroft V and W class)
|Ship displacement= 1,120&nbsp;tons standard
|Ship beam= 30&nbsp;ft 6&nbsp;in
|Ship draught= 10&nbsp;ft 6&nbsp;in
|Ship propulsion=3 Yarrow type [[Water-tube boiler]]s, Brown-Curtis [[steam turbines]], 2 shafts, 30,000&nbsp;shp
|Ship complement= 134
|Ship armament=
* 4 × [[QF 4-inch naval gun Mk V|QF 4 in Mk.V (102mm L/45) guns]]
* 1 × [[QF 3-inch 20 cwt]] anti-aircraft gun
* 4/6 (2/3x2 – see text) tubes for [[British 21-inch torpedo|{{convert|21|inch|mm|adj=on}} torpedo]]es
|Ship notes= Other characteristics as per Admiralty V leader
}}
|}
The '''Thornycroft V and W class''' were two V class and two W class specials built by [[John I. Thornycroft & Company Limited]] to Admiralty specifications. They were ordered in pairs six months apart, on 30 July 1916 and 9 December 1916, respectively. They could be recognised by a higher freeboard and shorter mainmast than the Admiralty type and the flat-sided funnels typical of Thornycroft. The large boiler room (two units) was aft with the single unit forward, the fore funnel therefore being narrower. This arrangement was transposed in the Thornycroft Modified W class.  The V-class ships had twin torpedo tubes and those of the W-class triple units. The second pair had slightly more displacement and a guaranteed (by contract) speed of 36 knots compared with the 35 knots guaranteed for the first pair. Early in their careers the specified anti-aircraft gun, the QF 2 pounder, was replaced by a single QF 12 pdr 20 cwt Mark I weapon, on a platform between the after funnel and the forward torpedo tubes.

All except ''Viscount'', which became a long range escort, were modified to WAIR type fast anti-aircraft escorts. Their conversions were non-standard in that they carried a pair of [[QF 2-pounder naval gun|QF 2 pdr Mark VIII]] guns on platforms amidships – ''en echelon'' in ''Woolston'' only – and that ''Viceroy'' retained a bank of torpedoes for some time.

===Ships===
* [[HMS Viceroy (1917)|''Viceroy'']], built by [[John I. Thornycroft & Company Limited]], [[Woolston, Hampshire|Woolston]], laid down 15 December 1916, launched 17 November 1917, completed 5 February 1918, sold for breaking up June 1948.
* [[HMS Viscount (1917)|''Viscount'']], built by Thornycroft, laid down 20 December 1916, launched 29 December 1917, completed 25 March 1918, sold for breaking up 20 March 1945 but actually broken up in May 1947.
* [[HMS Wolsey (1918)|''Wolsey'']], built by Thornycroft, laid down 28 March 1917, launched 16 March 1918, completed 1 May 1918, sold for breaking up 4 March 1947.
* [[HMS Woolston (1918)|''Woolston'']], built by Thornycroft, laid down 25 April 1917, launched 27 April 1918, completed 28 June 1918, sold for breaking up 18 February 1947.