Sorry to reanimate old thread, but nothing much going on forum anyway. So here it is.
Russians currently have 2 Ivan Gren class assault landing ships, that can carry two Ka-29 transport-attack helicopters, although only one of them can take flight at a time, since there is only one heli landing platform at the back of the ship.
Naturally, it also carries 300 marines and 13 MBT tanks or 24 APCs instead/ or combinations of it.
Although, the main problem in game usage would be - that it can launch only ONE chopper. Whereas for stable game flow, we need at least 2 or 3 choppers airborne at the same time, its especially critical at the beginning of the game. With just 1 chopper, people will get stuck on the ship, or will not get supplies.
Probable solution would be to have 2 such ships standing close by in visual range, so that pilots could pick up soldiers if they see them, but not sure if game engine will handle it.