Sure, i understand the logic behind the question, but i also see a flaw that is generated from the choice of object:

A ship is made of more than just planks. There are probably a few very large pieces of wood that run through the ship that connect everything together. Trying to remove on of these pieces of wood would cause the rest of the ship to collapse. So the base frame of the ship could not be replaced piece-wise.

What if every node from E2 was removed and replaced? Would it still be E2? What if they were re-pieced together into another E2? Now there is a mind bender.