At one point in Vietnam, the navy looked at building a new monitor based on the British monitor s, Erebus and Terror.
The need for a heavy gunfire support platform was recognized. An Iowa BB was thought to be Overkill, would have huge manpower needs, and be too costly.
Another option was a helicopter transportable gun like the railguns of WWI. These would be moved to a firebase after a sturdy base was constructed/poured for each piece.
For various reasons, a BB was tried. At. Least one admiral held out for a monitor using a spare turret for Nevada class with two 12 or 14 inch guns.
"These things must be done delicately-- or you hurt the spell." - The Wicked Witch of the West.
"We've got the torpedo damage temporarily shored up, the fires out and soon will have the ship back on an even keel. But I would suggest, sir, that if you have to take any more torpedoes, you take 'em on the starboard side." Pops Healy, DCA USS Lexington.