Join Date: Jun 2000
Location: CT/ Long Island Sound
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Chosing dock lines
Three-strand nylon is supposed to be the best for dock & anchor lines because it stretches more, "cushioning" the effects of waves and wakes on your cleats. If the heavier line fits on your cleats and in your chocks, you''ll have less to worry about in the next big storm. The issue in storms isn''t usually the strength of the line - you could probably find a half-inch line of some super-fiber that could lift your boat entirely out of the water - the issue is chafe. The boat''s motion rubs the line until it wears through. A bigger line not only takes longer to wear through, but because the diameter is larger, it spreads the load at pressure points over a bigger area and therefore wears down less as well.
Also, BTW, though nylon does degrade less than some other fibers (e.g. Kevlar) in the sun, white should last longer than other colors.