I had a look at the ships and must say I dislike the sails very much. They are very irregular this may look like fluttering in the wind but sails should not flutter. If they do the crew does a terrible job and the ship will not move. A sail full of wind should be very smoothly curved like this:
Also I'm very sure they did not transport stuff on the deck. They needed all space for sailing which is hard work. Also in case of a storm goods on deck are very dangerous.
Space in a ship is most valuable. There is always to little. So you can't place huge tables, with great chairs in a ship. Insided should be crammed with hammocks, equipment and maybe some tiny area with tables with and causing claustrophobia.
I also found this "wooden arch". I don't think that would be stable:
Aye that's why there is bunk beds but we're talking about 30+ knights and members IllI change the chairs but I don't see another solution for the table
As for the wooden arch I went over the ship many times with it's builder and we changed some things but that didn't seem to be a problem I'll have a closer look and I'll see what i can do