Hovercraft and landing craft solve different beach problems

Which is better for amphibious operations: a landing craft or a hovercraft?

Neither universally; hovercraft favor flat or swampy approaches, while landing craft suit rougher seas and are cheaper.

Neither system is universally better. A hovercraft can cross flat beaches or swampy ground quickly because it is not confined to the waterline. A conventional landing craft is preferable in rough seas or on a shingle approach. Landing craft should also be cheaper to operate, so terrain, sea state, speed, and cost determine the better vehicle for a particular assault.