No, that's not quite what I want.
To quote from the Codex on Inter Astra "Please note that to access Inter Astra's vendor services you must have an active ship docked in the local shipyard."
What I'm wanting to do is take the shuttle to another station where I have ship(s) in storage and retrieve one of them. Having arrived in a shuttle, I won't have an active ship at that station.
So you haven't even tried it. you have just read and believe that whatever it says is 100% true.
So since I believe in testing stuff before I make suggestion... I did this:
1. Logged to Odyssey, was in my cockpit, docked at a station, so my Corvette is my active ship.
2. Disembarked, walked to concourse
3. Visited Apex, booked a shuttle to next system to a station I have stored some ships
4. Let Apex fly me to the other station
5. Disembarked and visited Astra
6. Marvelled at all the OPTIONS Astra offered me
Buy Ships
Sell Ships
Change active ship, and I could pick one of the locally stored ships....
so what you asking for, is ALREADY IN THE GAME
[edit]
just to make it even more interesting,
after visiting my locally selected ship I went back to the concourse.
I booked another Apex Shuttle to another station,where I had no no ships at all
And bought another ship, without having an active ship at the current station.