The docking collars had held pressure-so what was she fretting about?

She flipped the taxi up, slamming the docking collar into its mate on the lock.

The damaged docking collar could blow in a second.

And what is that thing behind the docking collar?

It also contains a docking collar for docking to space stations.

He switched on his helmet lamp, then began belly-stroking his way toward the docking collar.

Peter sighed, then flooded his BC a little more and sank away from the docking collar.

"Okay, follow me in," he said as he held the sticks apart and swam backward from the docking collar.

Galen asks if they're planning on setting up a docking collar, but Adama replies that there isn't enough time.

The active unit then retracted to bring the docking collars together.