P@nther, thanks for the quick reply….we are playing 1940 Global, so the long range aircraft only applies to initial movement. The defending Aircraft from a sunk or damage aircraft carrier has a max of one movement regardless of long range tech.
Since there was no sea battle in sea zone 12 and the destroyer did not participate in the amphibious assault, it did not participate in combat and is therefore free to move in noncombat movement.
Just as other ships may, submarines may also move out of a sea zone where they begin their turn with enemy ships, even destroyers. The destroyer doesn’t stop the sub’s movement, as the sub didn’t enter the sea zone - it started off there.