Roman Seas Large Ships Update

I started on these late yesterday afternoon and managed to finish them before bedtime. These are the large ships in the Roman Navy set - Quadreme, Quinquereme, and Hexeres - two each. They are noticeably larger than the earlier small vessels. The largest, the Hexeres, is approximately 8.5" from stern to ram.

Since they are fairly large, including the decks, I wanted to make sure they would be able to support 6mm lead figures and artillery, so I modified the build a bit. All the ships were initially printed on 60lb. card, which my local Staples had - before jumping to 100lb. The smaller ships are fine with 60lb. However, what I did for the larger ships was this: Using spray-on tack, I added normal printer paper (20lb.) to the backs of the ships' hulls (total 80lb.). Two sheets of paper were added to the bottom of the decks (total 100lb.). I did not add more paper to the oars and outriggers, though. These I felt didn't need to be any thicker than 60lb, because of the folding they required.  Also, these would not support any extra weight, unlike the decks holding figures. I also drilled/punched holes for masts. I wanted the option to use sails for these large ships. I don't intend to use sails for the smaller vessels since the deck would be too cramped already with figures.
                                    
Here are all of the ships in the Roman Navy set - 22 ships total - quite cramped for the 6' X 4' mat I have.  Probably okay for combat, but not so great for maneuvering prior to.

Next I will finish the movement bases and then mount the ships on them.