"Mmm," Q nodded. "For a while I was using a chilling spell before battle, but that sometimes caused ice to form around the ship. Then there was the wind ward, but that caused waves, even occasionally fueled the flames... I think there's a chance the wood itself could be enchanted to resist flames, but it's a large ship- Even if we only enchanted the outer layers, it could take weeks. I'm open to suggestions though."