20 years ago I was wreck diving on the Wolf Islander II in Kingston Ontario. I had doubles and a bailout bottle I was in the interior of the wreck at about 75-80 feet. I was swimming forward in a passage way and then all of a sudden I couldn't swim forward any further like something was pulling on me. I stopped and turned around and back tracked...I then couldn't go any further the way I came in...I turned around again and came back again with the same issue. I was stuck somehow but could swim approx 10-15 feet in both directions. I finally realized my gear was stuck on something but I didn't know what. I started to take off my BP/W and my plan was to exit the interior with my bailout bottle. As I was taking off the BP/W I noticed a cable was hooked onto a carabiner on my secondary reel. Somehow the cable "opened" my carabiner and the cable ran through the interior of the wreck with different length keepers against the interior of the wreck hence only allowing me to travel 10-15 feet in either direction. After that I only used bolt snaps. I also wanted to say I had fear and panic at one point but closed my eyes and regrouped mentally to figure out how to get out of this alive. Clearly I have not forgotten