Seachoice 1/2 in. x 100 ft. 3-Strand Twisted Nylon Anchor Line — White
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You have 30 days to request a return. All sale items are final sale.
Heavy-Duty Anchoring for Larger Boats
This 1/2 in. x 100 ft. three-strand twisted nylon anchor line is built for boats that demand more holding power and greater shock absorption. The larger diameter delivers increased breaking strength over standard 3/8 in. lines, making it the right choice for vessels in the 25–40 ft. range or for boaters who anchor in exposed conditions with significant wind, current, or tidal surge.
Nylon's natural elasticity is the key advantage here — the line stretches under load and springs back, cushioning cleats, bow hardware, and the anchor rode system from sudden jerks. The line arrives with a professionally spliced galvanized steel thimble, ready to connect to your anchor shackle or chain leader without additional rigging.
- Diameter: 1/2 in.
- Length: 100 ft.
- Construction: 3-strand twisted
- Material: Nylon
- Color: White
- End fitting: Professionally spliced galvanized steel thimble
- Part number: 50-40731
Pairs Well With
- Seachoice Galvanized Anchor Lead Chain, 5/16 In. x 5 Ft. — add a chain leader to reduce seabed chafe and improve anchor set
- Seachoice Galvanized Anchor Lead Chain, 1/4 In. x 4 Ft. — lighter chain option for smaller setups
- Seachoice 3/8 in. x 100 ft. 3-Strand Twisted Nylon Anchor Line — White — lighter line option for boats under 25 ft.
Parts Desk Insights
Best use case: Primary anchor rode for powerboats and sailboats in the 25–40 ft. range, or as a heavier-duty upgrade for smaller boats anchoring in exposed or high-current locations. The 1/2 in. diameter provides meaningfully more breaking strength and chafe resistance than 3/8 in. line — worth the step up if you anchor overnight regularly or in areas with strong tidal movement.
Sizing note: Pair with a minimum 6 ft. galvanized chain leader (5/16 in. or larger) to protect the line from seabed abrasion and to help the anchor lie flat for a better set. Verify your bow roller and cleat are sized for 1/2 in. line before rigging.
Thimble compatibility: The pre-spliced galvanized thimble accepts standard 1/2 in. anchor shackles. Confirm shackle pin diameter matches before connecting.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.