Although I like the cover as it was, I thought there ought to be something I could do to make it a little more 'shipwrightish.' The woodcut version I originally designed accomplished that, but it looks too bland to me now. (However, I do think it would make a nice title page.)
So, this is what I came up with as a front cover:
Do the ‘boat plans’ look too cluttery, or does it add that little something extra that gives a better sense of the story being about a shipwright?