Yes, a Jersey Upline is a Yankee thing...specifically a Jersey thing that wreck divers in New Jersey came up with. It's basically a piece of safety gear. It looks like a long thin reel with handles at both ends. Most divers make their own. They wind biodegradable line onto the reel (sisal I think) and tie a lift bag to the end of the line. It is traditionally attached to the back of their doubles, out of the way, with thin pieces of inner tube so it can easily be removed.
It is used as an emergency anchor line if needed. Put a little air into the lift bag and hold onto the handles as the bag surfaces, then follow the line up as deco stops are completed. Once the diver surfaces s/he cuts the line and let's it drop to the bottom, folds up the lift bag and swims back to the boat.
Here's a commercially manufactured one:
Manta Jersey Up-Line JUL with reviews at scuba.com
What's up with the "ya'll" thing? Are you from the south? I know that's not a common phrase in NY. My ex-wife was from Long Island and she wouldn't dare utter a ya'll in public...probably not even under torture, although I'd like to find out for sure about that.
Thank you, K-valve for clarifying the Jersey upline yankee thing to this NYer. I'm have to look into one before I do my first NJ wreck next season.
Dunno, I've always used "y'all" or as you say "ya'll', maybe I've got a little southern in but mom just never told dad :shocked2:.