How much line do I need?

The size and type of line you use will depend on a number of factors including the size and weight of your boat. In general, lengths for fore and aft dock lines are usually two-thirds of the boat length, and spring lines are usually equal to the length of the boat. The Size Selection Guide provides a guideline for selecting the right diameter line.

Size Selection Guide

Boat Length Dock Line Anchor Line
Up to 20' 3/8" 3/8"
20'-30' 1/2" 1/2"
30'-35' 1/2" 1/2"
35'-40' 1/2" 5/8"
40'-45' 5/8" 3/4"
45'-55' 5/8" 7/8"
55'-65' 3/4" 1"