 Vanguard was unique among British battleships in having remote power control ( RPC ) for her main , secondary and tertiary guns along with the Admiralty Fire Control Table Mk X for surface fire control of the main armament . There were two director control towers ( DCT ) for the 15 @-@ inch guns , each carrying a " double cheese " Type 274 fire @-@ control radar for range finding and spotting the fall of shot . Each DCT could control all four turrets while ' B ' turret could control ' A ' and ' X ' turrets . ' X ' turret could only control ' Y ' turret . There were four American Mark 37 DCTs for the 5 @.@ 25 @-@ inch guns , each carrying the twin domes of Type 275 gunnery radar . Lastly , each Mark VI sextuple 40 mm Bofors mounting was provided with a separate CRBF ( " close range blind fire " ) director fitted with a Type 262 radar , although the ship never mounted her complete outfit of those directors . The STAAG Mk II 40 mm Bofors mounting carried its own Type 262 on the mounting itself . Other radar sets carried were Type 960 air and surface search , Type 293 target indication and Type 277 height finding . 
