What keeping HMS Hood until 1982 would really require

What would an HMS Hood still serving in 1982 look like?

It would be a radically rebuilt missile-and-helicopter ship with new machinery and structure, and constructing a replacement would probably cost less.

Sixty years of steel fatigue and obsolescence would demand replaced framing, renewed armour, new engines, modern accommodation, radar power, missiles, and aviation facilities. The likely result keeps forward guns but replaces after turrets with missile and helicopter spaces, leaving little beyond the name and parts of the original structure. This is repeated near-rebuilding rather than an ordinary refit, probably at greater cost than a replacement ship. The earlier discussion of postwar planning reinforces the point: navies retain the hulls that emerge from war in usable condition, not necessarily the ships once intended for long service. The Royal Navy's worn-out 12-inch battleships after World War I provide the comparison.