Definition
A specialization of TransportFacility. Each instance of PortFacility is an transport facility owned and/or managed by a single organization (private or public), typically built to support the loading, unloading, launching (or departure) and arrival of transports of certain kinds. Some ports serve only to support some of these functions: for example, some ports support only loading and launching of transports (see, for example, SpaceLaunchFacility). Specific kinds of port tend to support specific kinds of transports: space ports support spacecraft, sea ports support ships, and airports support aircraft.
