@ Mario de Monti
Blast! You're right. Okay, I invoke Plan B.
I can't help but notice the oversized rectangular station hangar door on the lower module or element. If there were only one hangar door (as suggested by the AMT model kit which is practically all we have on the station as a "whole") you'd have to devote precious space for transport purposes, i.e. to get something stored on the other side of the element to the area with the large hangar door.
And since this is TOS with compression / decompression techniques this looks like a hangar way too big to do the compression / decompression procedure just to take onboard Cyrano Jones' merchant ship or smaller vessels in general, IMHO. There might be smaller hangars on the other and unseen side.