As I have a huge library of screenshots of my Smivs'Shipset ships, it made sense to use these, so for each ship I firstly aligned it facing left (if it wasn't already) then accurately cropped the image to the length of the ship, and scaled the images using a scale of 5 pixels per metre to the length of the ship as specified in the .dat file. These were then super-imposed over a grid, and text added, and finally the resultant image was scaled down to a suitable size.
The result is an accurate to-scale chart of all the Core ships, at a scale of 2 pixels per metre, on a 10 metre square grid.
I have now added a link to the chart at the bottom of the main Wiki 'Ships' page.