I'm starting to get to the stage where I have to decide how to do my canons and ports.
I don't necessary want the gunports wide open with the canons ready to fire, but like it to be more like when she was being in harbor getting prepaired for departure. If possible I'd like it to have some ports open and other shut or half open. I like asymmetry in my models as I feel it makes them come alive.
So here's my question: When looking at the Batavia replica she seems to be able to open the gunports in different angles, that you can open the hatch only halfway. If I remember correctly the replicated gun deck at the museum has ropes for the hatches that allowes them to be either open or closed, not halfway open.
The gunport lids are mounted on simple hinges above the ports, with a line from a ringbolt near the bottom edge running through a hole in the hull above the hinges. There is a cleat mounted on the ceiling above the after corner of the gunport for belaying the lid line. With this arrangement, the port can be fixed in any position from closed to fully open. The strain on the line and cleat is greatest when the portlid is horizontal, halfway open, but the gear is heavy enough to take it.