In order to enable communications with the strike center and marshall controller on an aircraft carrier, you must assign the player aircraft to that specific carrier. In the mission editor, open the player aircraft's "profile" (right-click on the icon), scroll down the "Carrier-" list situated near the bottom left corner of the box and select the specific carrier from which you intend to operate. In the mission, open the "Tower-" menu in the secondary communications menu and issue a request for i. e. landing (assumes that the player's aircraft is situated within a particular radius of the carrier).