Very nicely realised galleys. They have a suitably menacing aspect. One minor quibble, towers were traditionally placed on the deck at an angle not square-on so increasing the defenders angle of fire to repel attacks from most quarters.
This is why you can see 2 sides of the tower on this side on relief in the Vatican museum
https://media1.britannica.com/eb-media/45/1045-004-B88F36DF.jpgEven though this is a late depiction, the tradition was almost certainly a very old one as the tactical advantage was considerable.
My credentials - back in the day my Uni dissertation was on Greek and Roman naval warfare...