Made popular by New Jersey divers. The Divers Emergency Ascent Reels affectionally called the "upline" is a spool that the diver carries on the side or the back of their tanks for emergency decompression use.

Stainless Steel Nylon Upline   Part#085 002   $99.99
The Emergency Upline Reel is used for rigging an ascent line where an ordinary line reel would be inadequate. Rot-resistant reusable 1/8" nylon line allows a safe tethered ascent from any depth in even the strongest currents.
This reel differs from a typical "Jersey" reel in that it is carried for emergency use rather than every day use. The low-profile design allows it to be bungied unobtrusively between double tanks, or alongside a single. A necessary piece of equipment for any deep diver. 15" x 3.5" holds 400' of 1/8" nylon line.

Sisal Upline   Part#848   $59.99
When divers get disoriented on the bottom and cannot find their way back to the dive boat's anchor it can be a real problem. For years Divers in New Jersey have utilized this simple Up Line Reel. the reel holds 250' of a strong 5/16" hemp line (not included). Divers carry the reel on their tanks with bungies and when needed simply send up the loose end with a small lift bag while letting line out. One the lift bag hits the surface the diver ties the up line to the wreck, cuts off the reel and ascends up his own newly created mooring line. Safety decompression stops are made easy and since the hemp is biodegradable it deteriorates quickly. Our Jersey Up Line Reel is mage of lightweight aluminum.