Thanks for the help guys, I hadn't thought about the fact that the Cougar would get swamped or that amphibious vehicles likely leak a bit (this one has had an RPG through the side already so the patch job probably isn't the finest).
Thanks for the PDF on Barge Stability as well, it gives me some ideas for what might happen in a rainstorm since the barge is only partially covered with wood, and I imagine it must get fairly waterlogged when the rain starts to come down unless the Team thinks of putting pumps or something on it to drain the water.
While looking at weapon systems I came across the 30mm ASP which some light internet research revealed is a gas operated weapon. What does this entail -what type of gas does it use? I'm sure its' not gasoline, so I'm imagining metal 'bottles' like a welder uses. How often would you have to top these off?