Anchor chain markers are used to identify how much anchor chain has been deployed during anchoring. Installed at selected intervals along the chain, they provide a clear visual reference that helps the crew estimate rode length and maintain a more consistent anchoring setup. Anchor chain depth markers are available in different colors, sizes, and installation styles to suit various chain diameters. Boat chain markers should be selected to fit the chain correctly and remain visible during repeated deployment and retrieval through the bow roller and windlass.
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1-2 weeks delivery time Osculati Chain Markers Assorted Colours Kit (Chain Rainbow) includes vibrant, durable markers for easy identification of anchor chain lengths. It features five colors (white, blue, yellow, red, and green) and inserts for 6mm, 8mm, 10mm, and 12mm chains.
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$ 30.94
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1-2 weeks delivery time The Osculati Rainbow Anchor Chain Marker Kit is designed for quick visual identification of deployed anchor chain length. The kit consists of coloured plastic inserts that fit directly into calibrated chain links and allows marking of up to 25 m of anchor chain. Available for 6 mm, 8 mm, 10 mm and 12 mm chain sizes, each kit includes white, blue, yellow, red and green inserts, with quantities tailored to the chain diameter for secure installation and clear visibility.
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$ 8.58
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1-2 weeks delivery time The Anchoright Anchor Chain Marker Set provides a simple and durable solution for identifying deployed anchor chain length. Designed for anchor chains from 6 mm to 12 mm, the sets feature marine-grade polymer markers with a secure two-piece screw-fastening system that resists loosening during windlass operation and seabed abrasion. Depending on the version, kits include either 30 markers in 6 colours or 40 markers in 8 colours, together with fastening hardware and a reference guide for fast and accurate chain length identification.
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$ 34.81
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1-2 weeks delivery time The Trem Happy-Chain Marker Kit is designed for fast and reliable identification of calibrated anchor chains. Made from durable coloured plastic inserts, each kit snaps securely into the chain links without tools thanks to its shaped sides, providing highly visible chain length marking. Fluorescent colours remain easy to identify even at sunset, making the system suitable for improved anchoring safety and chain management. Available for 6 mm, 8 mm, 10 mm, and 12 mm calibrated chains in five different colours.
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$ 4.42
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1-2 weeks delivery time The Trem Happy-Chain Multicolor Marker Kit is designed for quick visual identification of calibrated anchor chains. Each kit contains 10 coloured plastic inserts in five fluorescent colours (2 pink, 2 yellow, 2 orange, 2 green, and 2 blue) that securely clip into chain links. The wrapping profile closely follows the shape of the link, while the textured sides simplify installation without tools. Available for 6 mm, 8 mm, 10 mm, and 12 mm calibrated chains.
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$ 3.93
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1-2 weeks delivery time The Anchoright Chain Marker Display Stand is a retail presentation unit supplied with 12 complete Anchoright chain marker sets for 6 mm, 8 mm, 10 mm and 12 mm anchor chains. Designed for marine retailers and chandlers, it provides an attractive countertop display containing colour-coded polymer chain marker kits for fast and accurate anchor chain identification.
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$ 419.06
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1-2 weeks delivery time The Trem Happy Chain Marker Counter Display is a complete retail merchandising solution supplied with 100 Happy Chain Marker kits covering all available chain diameters and colour variants. Designed for marine retailers and chandlers, the display measures 500 × 305 × 140 mm and includes a sturdy countertop stand together with an assortment of marker kits for 6 mm, 8 mm, 10 mm, and 12 mm calibrated anchor chains.
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$ 442.39
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What are anchor chain markers used for?
Anchor chain markers are used to indicate how much chain has been paid out during anchoring. By placing markers at known intervals, the crew can estimate the deployed chain length more quickly without measuring it manually.
This helps when setting the required anchor rode length for different water depths and anchoring conditions.
How do anchor chain depth markers work?
Anchor chain depth markers are fitted to selected chain links at regular intervals. Different colors or marker combinations can be assigned to specific lengths so the crew can identify the amount of chain deployed as it passes over the bow roller or through the windlass.
How should boat chain markers be spaced?
Boat chain markers can be installed at intervals that are easy for the crew to remember, such as equal distance increments along the chain. The exact spacing depends on the total chain length, typical anchoring depth, and the preferred marking system on board.
A simple and consistent color sequence makes the system easier to use during anchor deployment and retrieval.
How do I choose the correct anchor chain markers?
The markers should be matched to the anchor chain diameter and link dimensions. They need to fit securely without preventing the chain from moving correctly through the bow roller, chain stopper, or windlass.
Visibility, ease of installation, and resistance to normal marine exposure should also be considered.
Can anchor chain markers be used with a windlass?
Yes, provided the markers are suitable for the chain size and do not interfere with the windlass gypsy. Correctly fitted markers should pass through the anchoring system without causing the chain to jam or sit incorrectly in the chainwheel.
When should anchor chain depth markers be replaced?
Markers should be checked periodically for wear, fading, looseness, or damage. If colors become difficult to distinguish or a marker no longer remains securely attached to the chain, it should be replaced to keep the depth-marking system clear and reliable.