Vertical-launch replenishment and relative motion

How could vertical-launch missile cells be replenished at sea?

A rail or chute fixed relative to the receiving ship is suggested as one possible response to relative movement.

Reloading requires control of motion between the deck, crane and transferred missile. A proposed rail or chute would remain connected to the receiving ship. It could preserve a consistent relationship with the hull while moving the missile into position. The concept remains a tentative suggestion about the eventual approach. Other methods may prove more viable despite greater expense.