On the Discovery1789 there are 10 4 pdrs but there are 14 gun ports(total). If you look at the upper deck plan I have marked in green where these excess gun ports would be. In the captains quarters the gun would be right up against the bulkhead and the next two actually have a bulkhead bisecting the port. This is the "as fitted" drawing from 1798 when she was converted to a bomb. In my earlier version the pantries aren't there but there just isn't room for a gun.
Anyway would these ports be treated as lights and have glass in them or would they be used for ventilation or maybe just be fixed shut. I don't think they would make good lights as they would start at the deck and only be a couple or three feet high. Puzzled

Anyway would these ports be treated as lights and have glass in them or would they be used for ventilation or maybe just be fixed shut. I don't think they would make good lights as they would start at the deck and only be a couple or three feet high. Puzzled

