You are correct in saying that it would be impossible to be a ship. Because it is not made of cells.

But neither is a lamp or a car...

At this point, my stance has boiled down to more concrete limitations on his abilities, as well as defining the abilities clearer. If he cant turn into a ship because he is made of cells, then it should be impossible to form into a lamp or a car or something small and unnoticeable such as a grain of sand. At this point, I would be okay if we agree he can shift into other living objects however the ability would still need to be refined.

EDITERINO: I just read President Taco's newest post. One of the biggest ideals in Godmods post is that you can APPEAR like an object, but on closer examination (you wouldn't actually have that objects function/you would be squishy) it would be apparent that not everything is as it seems. The items working I am once again not to sure about. I wouldn't call plastic squishy. Once again, need GMs on this one, but I would keep it human flesh consistency. Overall, you still need more elaboration. When I used to rp, I tried to stay away from shapeshifting because of this exact reason here... it's difficult to balance.

Keep in mind that I am not at all AGAINST you being a shape shifter, I just think that the GMs need to agree on what is acceptable and what isnt. And if they decide that you can shapeshift into anything and for me to shut the hell up, then so be it, but we need more elaboration, and concrete limits. 

To reiterate, GM's call on this and I hope we can get this worked out.