Editing A- and B-class destroyer (section)

===Flotilla leaders===
{{HMS|Codrington|D65|2}} was built to an enlarged design to accommodate the commander of the destroyer flotilla, [[Captain (D)]] and his staff, some 47 additional officers and ratings. The ship displaced roughly {{convert|200|LT|t}} more than the [[private ship]]s ({{convert|1540|LT|t}} at standard load and {{convert|2012|LT|t}} at deep load); she was {{convert|20|ft|m|1}} longer overall and had a beam {{convert|1|ft|m|1}} wider. She shipped a fifth 4.7-inch gun between the funnels, which forced the two-pounders to be repositioned [[abaft]] the rear funnel,<ref name=l0/> and was not fitted with TSDS. To compensate for her greater size, ''Codrington''{{'}}s oil tanks were increased by {{convert|40|LT|t}} and her turbines were rated at {{convert|39000|shp|abbr=on}} to give her the same range and speed as the private ships, but she proved to be significantly faster as she made {{convert|37.7|kn}} during her sea trials. However, the increased length made her somewhat unhandy, having a turning circle much greater than the standard A class, which complicated manoeuvres with her flotilla.<ref>March, pp. 247, 258–259</ref>

Unlike ''Codrington'', ''Keith'' was built upon the same hull as her sisters to save money and to make her tactically identical to her flotilla-mates. The initial proposal was to enlarge the aft deckhouse to make room for the Captain (D) and his staff at the expense of 'Y' gun and the TSDS gear, but the gun was reinstated while she was under construction. The ship was too small to accommodate the entirety of the staff, and ''Blanche'' was fitted as a divisional leader to carry the surplus.<ref>Friedman, p. 205; March, pp. 265, 267, Whitley, p. 99</ref> ''Keith'' was {{convert|40|LT|t}} heavier than the private ships at standard load and nearly {{convert|100|LT|t}} heavier at full load ({{convert|1400|LT|t}} and {{convert|1821|LT|t}}, respectively) and carried 19 additional officers and ratings.<ref name=l0/>