Starfire and the United Army had only just begun their naval confrontation when the United Army was already chilled to the bone. Although they had some advantage being upwind, in the magical world, the advantage from positioning was neither significant nor absolute.
Being upwind provided a slight advantage in range, allowing the smoke from the cannons to drift away with the wind, which did not affect the gunners' accuracy. Moreover, it was easier to perceive the opponent's movements. Of course, the disadvantage was that they were mostly forced into engaging the enemy, and if their combat power was weak, this could backfire.
In fact, being downwind was not an absolute disadvantage either. If they were purely warships, they usually did not have a layer of cannon ports, even if far away, because they could open the lower layer of cannon ports to shoot upward, their firepower was relatively stronger. However, what they said were warships were merely armed merchant ships in the end.