Sea-Dog Line - Double Braid Fender Line - 3/8" x 6' - Navy PR/PK - 302110006NV-1. Sea-Dog Line company has been servicing the marine industry since the early 20s of the 20th century. A quality line or chain is must-have equipment in the arsenal of every boat owner. Whether you're going to use it for a specific application or for general purposes, it is a great investment that will come in handy time and again. Depending on the type of the marine line or chain you use, it may help you secure your boat to a dock, or to another boat when rafting, etc. It can also be useful when you need to secure your luggage in inclement weather to prevent it from damage.. Features:. Sail away secure and stress free with this durable rope on board. Sea Dog's Double Braid Line, gives elongated life expectancy and abrasion resistance. Sea Dog's Dock Line and Fender Line is the right choice of rope due to it's double braid and triple strand nylon fiber. Being nylon also makes this rope ideal for your marine