[sapper740]

Without further ado I'd like to present the:

MOBILE AIRSHIP MOORING MAST

It seems the US Navy had so many problems both docking airships to the masts as well as manoevering them in and out of their hangars that they decided to bring the mountain to Moses with a mobile mooring mast. Most mooring masts were fixed but there were some that were on wheeled dollies allowing them to be towed by a tractor (see the pic with the airship attempting a headstand) while some stations had mooring masts that were self-propelled for ease of docking and moving the airships.