Hi Bowlerdg...Hopefully then, you also remember getting out of the cell using the electronic tool on the door mechanism. After that would have been a good idea to go to the main cabin and find Ozgar.
I don't know where you are now, but if you are in the stern of the ship, where the abandon ship code pedestal is, you need to make your way up to the bow of the ship, main cabin and look in the window. Hopefully, Ozgar will still be there.
Here's the line from the walkthrough and the cabin is to the left of the yellow grill if you are standing facing it:
"(NOTE: If you haven't gone back up the corridor, the ramp, and to Ozgar's control room door, to peek in an see him abusing his guard...you will not be able to plug in the imager.)"
Good luck, Witchen =O)