I like it. I do have some suggestions though...
I think the deck of the boat looks good, but the shape of the hull should be smoother. It does kinda look like it's melting.
On the starboard side of the boat, your walls have no thickness. Add thick edges like you see on the port (near) side of the boat.
There's no steering wheel on the boat... if the "house" part is supposed to be the wheelhouse/control room, add a window on the front so the pilot can see out.
The hull board pattern doesn't line up above and below the waterline. If you did this on purpose to make it look realistic, like the water is refracting the light, don't. Some realistic touches don't work with graphics like this.
I don't like the small plants on the beach. Round the bottom more so it doesn't look so flat, and shade the sides so it looks cylindrical.
I give it 7/10. As for the people who complain that it's a GK clone... well, why not? Many of us think that GK is the greatest thing that ever happened to Graal. If it works, use it. If it works and you can't use it, copy it.