The pack of three flats is interesting and took a little digging to work out exactly what should be on the back of them.
Contemporary illustrations are pretty much useless as artists seemed to have no concept of drawing what they saw - the results are almost cartoons that bear no relation to reality.
Not to worry, I found a historian who could explain, and then went away to build the models.
I think the results look the part and aren't particularly difficult to make. There's even a model boat used for added variety.
