Editing County-class destroyer (section)

===Batch 2 improvements===
[[File:NAVO eskader bezoekt Amsterdam, vlaggeschip HNS Norfolk, Bestanddeelnr 928-6223.jpg|thumb|HMS ''Norfolk'', a Batch 2 ship, following modification that removed the 'B' turret and replaced it with four Exocet launcher boxes]]
The second four Counties had improved air warning and target indicator radar ("double bedstead" 965M and a revised 992 for closer range tracking rather than only surface warning). The revised Seaslug Mk2 was supposedly effective against supersonic and surface targets at up to 30&nbsp;km. ADAWS command and control system could process and prioritise air targets detected by the 965 and 992 radar and other so fitted RN warships. This was important as the Type 984 3D processing system on the carriers ''Victorious'', ''Hermes'' and ''Eagle'' were removed from 1967 to 1972, affecting the first four County class ships which depended on datalinks to the carrier systems for primary radar and targeting processing of Seaslug.

As constructed, the County-class ships were armed with a pair of twin [[QF 4.5 inch naval gun|QF 4.5-inch gun]] mountings. These had magazines for 225 shells for each gun, two-thirds of the magazine capacity for the same guns in the single-turreted [[Leander-class frigate|''Leander''-class frigate]]s.{{sfnp|Friedman|2006|p=189}} The second batch of four ships (''Antrim'', ''Fife'', ''Glamorgan'' and ''Norfolk'') were refitted in the mid-1970s – their 'B' turrets were removed and replaced by four single [[Exocet|MM38 Exocet]] surface-to-surface anti-ship-missile launcher boxes in order to increase the fleet's anti-ship capability following retirement of its aircraft carriers.{{sfnp|Marriott|1989|p=106}} This made the County-class ships the only Royal Navy ships to be fitted with three separate types of guided missile: Seaslug, Seacat and Exocet.