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HarborMasterTM dock and anchor lines are constructed of 100% nylon, the best fiber for both applications. Nylon's elastic elongation helps smooth out the surge effects of wakes, waves, wind or heavy seas. HarborMaster dock lines are pre-spliced with a secure eye in one end and available in a wide range of diameters and lengths. Available on spools as well.

Product Code


Specific Gravity


Fiber (Core/cover)

Nylon / Nylon


Product Specific Class I

at Percent of break strength
10% 20% 30%
Elastic Elongation
3.00% 5.30% 6.70%

Dock/Anchor Line

Easy to handle, long-lasting lines   •   Excellent wet abrasion resistance   •   Stays flexible for long life

DIAM.  (INCH) 3/8 1/2 5/8 3/4
WEIGHT PER 100 FT.  (LBS) 4 6.3 10 15
AVG. STRENGTH  (LBS) 4,900 8,200 13,500 22,200
DIAM.  (MM) 9 12 16 18
WEIGHT PER 100 M  (KG) 6 9.4 14.9 22.3
AVG. STRENGTH  (KG) 2,200 3,700 6,100 10,100

For storm conditions, upgrade one size and double chafe protection. Strengths are approximate averages of new rope. Check with your local dealer for color and size availability.

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