regatta marine essentials bungee dock line boat rope 4.5 ft. length 6 ft. stretch 12 in. loop (pack of 4) regatta marine essentials pack of 4 bungee dock lines 4.5 ft. length 6 ft. stretch 12" loop extending boat rope. recommended for docking and mooring smaller sized common vessels up to 4000 lbs - tensile strength is 2,150 lbs. eliminate the jerking and preserve your dock lines and boat condition. foam attachment prevents abrasion and prevents the lines from sinking for easy pick up and docking. great for small vessels and pwcs.