@R:
The foot print won’t be much larger then the AirPort w/ Hanger. This could be a Ship Yard or Naval Base. Not sure how to differentiate between the two. Unless I remove the Oil Tank and insert a Spot for an AA gun, similar to the one on top of my Sub Pen. That may be cool. However, an AA base is larger then the Oil Tank. Will play around with it.
I’m not sure of the best way to translate the difference into a sculpt design, but I’d say that even though some shipyards and some naval bases may have some facilities in common, the fundamental characteristic of a shipyard is that it has the ability to build and launch ships. A big naval base would typically have some capacity to complete the fitting-out of a new ship, or repair an existing ship, and perhaps might even able to overhaul substantially an existing ship, but it generally wouldn’t be able to construct and launch a new one. The main purpose of a naval base is to support operational ships: giving them a safe harbour in between missions; providing them with fuel, ammunition and other stores; providing the crews with rest and recreation and training facilities; and so forth.