Why a battleship might float after a drop but never fight

Would Duke of York or an Iowa-class battleship still float after being dropped belly-first into the sea from 100 feet?

A sealed ship might remain afloat, but shock would ruin shaft alignment, machinery, electronics, and turret systems.

Closed doors and intact watertight boundaries could keep the hull from immediately flooding. Open fittings would instead admit water and make sinking much more likely. Even if the ship floated, the impact would displace shafts, machinery, electronics, and turret components from their designed alignments. The thought experiment separates basic flotation from the precise engineering required to move and fight.