Hi Jacob,
To hook Atlas to a barge, you do as you would to attach a towline except that you click the Barge icon in the lower right corner of the screen instead of the Towline icon. The Barge icon is below the Anchor icon.
Make sure that Atlas is lined up with the barge and up against it. The barge attachment circles are cyan (light blue).
To attach Atlas to a barge in the Mission Editor, you also do as you would for a towline except that you check the Barge box instead of the Towline box.
Regards,
Marty
In the Mission Editor, you use the Towing waypoint for barge hookup as well as for hawser tows.
You can download the Mission Editor Tutorial here:
http://www.shipsim.com/ShipSimForum/index.php?action=dlattach;topic=3653.0;attach=6978 (http://www.shipsim.com/ShipSimForum/index.php?action=dlattach;topic=3653.0;attach=6978)
I’ve not updated it to cover barges, but the above information explains it.