You've got no business being there, and the crew is probably busy restocking, or maybe they're even all on shore leave.
You can't help but feel a little bit like it's a missed opportunity. Oh well. You turn your back on the viewport. She'll undock, and you probably will never see that ship again. How often does a given ship drop by the same spacedock, unless they're on a patrol?
...
Still. It's a pity.