OK - small tutorial about the gunports.
First thing to remember - as already said: a 2D drawing is rather difficult to project on a 3D object. And the other way round: making a 2D drawing from an 3D object is also a bit of a thing (I know from experience).
Second: the drawing is first of all ment to give a guideline where the ports should come.
Third: How were ports cut in a ships hull? I wasn't there around 1595, but I presume (guess might be a better word) it was done in the following way.
The frames of the hull were all vertical in a 90 degree angle with the waterline. So the vertical sides of the ports were cut out as first. You simply had to cut in between the frames.
Second step is to cut out the upper joint - perpendicular to the vertical joints.
At this point the hinges could be mounted, so the lid would not fall out, and then the lower cut could be made.
This lower joint did not have to be perpendicular to the other joints. The port would also open if it was under an angle:
If the upper joint is cut in an angle with the vertical joints, remember that the hinges must be under this angle as wel, otherwise the ports can't be opened.
This works:
This certainly not!:
The easiest way to project the ports is to cut a square in the right dimensions, pin it on the right spot on the hull and mark the outlines. Eventually you can follow the lines of the wales, but be aware how to place the hinges in this case.
Edit: the thinner lines in the sketches should be seen as joints instead of the thicker horizontal lines.
Hans
