Where a modernised Iowa might fight in the Cold War

How useful would a modernised Iowa-class battleship have been in a full non-nuclear Cold War?

Probably limited against warships, but more useful for shore bombardment, especially in a theatre such as Norway.

A modernised Iowa-class battleship would rarely get within gun range of a valuable naval target in a full non-nuclear Cold War. The theoretical power of the guns must be separated from the operational problem of finding a target they could reach. Coastal and land targets are more plausible, with Norway offered as the kind of theatre where heavy naval gunfire might be useful. The battleship's value therefore becomes a question of access and mission, rather than shell weight alone.