Would Vanguard have received close-in defenses by 1982?

Would Vanguard have had close-in weapon systems by 1982?

Possibly, though the answer is doubtful; Sea Wolf is another suggested modernization, with neither fit certain.

Close-in weapon systems are treated as possible but doubtful in this hypothetical refit. A version of Sea Wolf is also suggested as something Vanguard might have received. Neither fit is established, so the imagined ship's 1982 air defenses remain uncertain.