When the Ship Limit is reached, ship build orders are no longer performed immediately but are collected in a queue. When a ship slot gets free, it is filled again with a build order from the queue. The modus of this queue differs greatly between host versions. See also PBPs and PHost build queue.

This is a testing version.
It may be incomplete, and have more bugs (or features) than the public live version at planetscentral.com.