And how do you simulate tanks and howitzers tied on the deck?
The question remains: are they really up to using that kind of thing in real combat conditions, are they experimenting for further dedicated shipborne systems (e.g. using the landlubbers' stabilization technology), or is that just a propaganda quirk to frighten the hell out of the Taiwanese?
Or as far as the game is concerned, just take any old LC unit and stuff it full with any old vehicle-based weapons if you like!
I tend to do the same with infantry weapons in some landing scenarios, to account for crewmen, grunts, MPs or just anyone giving some support (rifles, MGs, grenades, mines, rarely LAWs and MANPADS) during the beaching.