Looking good! It's an interesting concept and I like it a lot.

Only suggestion is to maybe shift the part of the ship protruding from the sand a little toward blue so we understand that it's below water. I like how you've done your cutaway setup but it wants to trick my eye into thinking that the light blue ocean floor is actually the top of the water and that the front of the ship is sticking out. Knocking it back under water visually might help that?
M