Usually once a D is filed, assets are frozen so as to prevent things like what your H is attempting.
I had a sail boat for many years. Not big enough to comfortably live on but for a week or so at a time, but I can attest to the definition of a boat - "a hole in the water into which one throws money". It seemed that whenever I went into West Marine to get some minor item, I ended up spending at least $500 on other stuff.
I am sorry to hear of your dream of retiring on a boat being dashed, but bear in mind that you are young enough to find someone again with similar dreams.