Here's an amazing picture of Remousavi's screws:


Note, the hull is unfinished. In the actual photo, you are seeing the outline of a complete hull. That accounts for the difference in shape. I am also still missing a sternpost, rudder, propeller wings, and keel.
Also, those featured in the photo from left to right: Modman, myself, Socky, RMS Gigantic, TicTac, and Northmoor.