I'm about ready to start rivetting now and would appreciate views on my logic on the spacing and positioning before I get going. I would think the planking and wales would have been principally nailed and rivetted to the frames, so one would see a series of vertical rows, much as you see on aircraft. Looking at this drawing, that's what I do see, along with the odd non-pattern for sundry items which would be also be typical of this method of assembly. Then I also see the four much larger heads two either side of the gunports, whose purpose I don't know - would they have been much beefier bolts to stop the recoil tearing the frames from the planking, or even through-bolts with eyelets on the other end, for the gun rigging?







