Good luck getting close enough to do so :). The winds are hurricane force and debris could smack you necromancer before getting close enough. The souls are also damaged and individually incoherent, the effects of the Soul Rending wands used against them. Go to Comment
It could be limited by powerful, probably artifical, weather conditions. The strength of this composite being is such that conditions which normally control hurricane movement (water temprature for one) do not have a great effect. It will not stray too far inland, but since so much of humanity generally lives on the sea, this still provides ample opportunity for destruction. Go to Comment
I did not mention sky ships - it was a pure blue-water battle.
and yes, the Aldruku ships are a minor variant on a longboat. They were a lower tech level then the Nyoran fleet - more tribal vs the greek/romanesque.
And to be honest, I had more fun writing the naval battle over the storm. Think I'll need to add toit sometime. Sigh. I keep saying that :)