used measurements from cpu model & whitehall info to get all the dimensions, sketched in pics on grid sheet, figured approximately that one stud equaled about one foot (very approxiamately!) Roughed in the keel and started building from there. Btw my the keel on my new ship the Agamemnon is pretty much done, and got 40 cannons built already, it won't be quite as big as "legopirate83's" MOC since his is 100 gunner and mines only 64 but it will be pretty darn accurate and pretty darn big. My wifes having a fit trying to figure out where I can put it.