Great work! Can't wait to see more of it.
Just one thing bothering me... with that huge stern addition and the already largish forecastle, the four wheels it uses for support are looking increasingly fragile. I know this is fantasy and all, but you might think about adding more sets of wheels to make the whole thing seem more mobile. As is, I can see it all too easily getting bogged down in soft ground.
Or just ignore my observation. It's fantasy! <g>