Here is a pic of a page of my gaming notebook, with the first doodles of a plan for a Half Continent naval vessel:
It is a 24 guns-broad frigate, and the sketch is the approximate size of the model in 1/600, although it is probably distorted a bit by the pic. The measurements at the top of the page do indicate the actual length and beam of the model.
The drawing is rough. It lacks a lot of deck detail, and the ship's boats are definitely way off in scale, but this is close to what I think the frigate might look like in model form. This page on DM Cornish's art site has some much better (by the originator of course!) of the ships I hope to imitate.
I will need to make a trip to the local hobby shop for some balsa and sheet plastic so I can start to put one together!