yes,
there are a few photos knocking around somewhere of these shermans with the large hatches, but these are few and far between, so the hull could be ok, as long as you check your references and model a perticular vehicle.
Where you have used chain for the whinch, this should be ( SWR ) Steel wire rope, in model scale, picture hanging wire, but overall, well done,you have done a good job on the base, and the figures.
well done,
malc.
sappers do it everywhere ubique.
`Its not wise to upset a wookie`
`But sir, nobody worries about upsetting a droid!`
`Thats because droids dont pull peoples arms out of thier sockets when they loose...... wookies are known to do that!!`