Dromonds were a Byzantine improvement on the Mediterranean galley. They had an above-water spur rather than an underwater ram, lateen (triangular) sails which are easier to use to tack into the wind, providing superior mobility in adverse winds, and had a full rather than partial deck, which provided additional protection for the rowers from missile fire.
As for Aurane, yes it is. For example, Warwick the Kingmaker was the Captain of Calais and Lord High Admiral of England, which gave him control over England’s largest standing military and its navy. Warwick repeatedly used the navy to conduct pirate raids against the Castillians and the Hanseatic League, which made him very popular with the London merchants he fenced the booty to (and who were competitors of the Castillian and Hanseatic merchants).
(A cool animatronic at Warwick Castle, which I visited when I was a youngun…)
And when fighting between York and Lancaster broke out, Warwick used the navy both defensively (allowing him and the Duke of York and his family to escape into exile) and offensively (his invasion of June 1460 which led to the Battle of Northampton where he captured Henry VI). The garrison stayed (mostly) loyal to him because Warwick was the richest man in England and offered them pirating loot to boot.
Moral of the story: make sure your admirals are loyal, because ships are a very mobile asset.
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