Thaago and Ccrack, both ship designs look amazing and awesome.
The Sailfish, to me it has that nice Cosair look to it by the sails and body. I also agree with having a bottom deck to hold the balloon component and access to side turning engines. With the three guns broadside, maybe have the middle gun poin straight out and have the fore and aft guns pointed out in either direction, maybe 45 degrees, so it still have some overlap but so only two weapons can have sight at the target, and to have the third gun in arc, you have to turn the ship a bit. There is also another concept I was thinking, when I saw the size comparison between the Galleon and this, I notice near the forward bow, there maybe room to add one heavy gun to the ship. What popped into my head was have one side have a lower deck heavy weapon and top deck single light weapon, and the other broadside have the the three angled light weapons, to shake things up a bit.
Thaago, you ship looks like the da Vinci tank design. It's nice looking, almost like a Spire 2.0 with the tower structure but bigger like on roids
. The angled heavy guns is a nice touch where you can't have two overlap, but you can't approach it's front or side too long or get shot out. It maybe too much, but I don't know, it something I have to imagine to see it in battle.