Using the Dock Line's pre-spliced loop allows you to effectively dock and moor so your passengers can disembark quickly and safely. • Colorful Dock Lines come logo'd in 5 different lengths. Choose from 10' to 35'. Available in multiple diameters: 3/8", 1/2" and 5/8".Ground shipping only. • Lines have built in memory, easy to case without kinking. • Made of solid braid polypropylene, the Dock Line naturally repels water and floats so it won't get caught in your propeller.