>ship doesn't have cannons
>vehicles on board the ship do have cannons
>mount vehicles securely to the deck of the ship
>shoot cannon from the ship
I see nothing wrong with that. However: an LAV falling from a deck will likely capsize and sink. The crew inside will be unconscious from the impact and drown. Even if they don't go unconscious, they will break a limb or two. Have you ever been in the sea? Swimming is a full body exercise. Swimming in full combat gear is full body hell. Swimming with a broken limb in full combat gear is a death sentence.
I know tankers don't wear any armour and have very light gear when they are not outside their vehicle, but even the helmet and boots will make things difficult.
They will drown if that thing falls off.
Shit thread, desu.