When the Ghost returns to Lothal with the space whales, Mart and Wolf are both seen in the cockpit manipulating the controls (in the pilot and copilot's seats, respectively). Only one of them could actually be flying the ship.
When Admiral Thrawn orders his Star Destroyer's turbolasers to aim at the city, the large turbolasers mounted on the dorsal side take aim, even though they are not facing the city.