I think its obvious. Transports are multidimensional and thus have infinate space within them, the transport limit is actualy based on processing power. The trick with storing things in non-euclidian space is getting it back, thus 200 is simply the maximum amount of ships the transport can keep track of within its confines, and though could technicly load more than that, it would be nigh imposible to get it back.
Thats my story and I'm stickin' to it.