Stainless Steel Anchor Chain Stopper (For 6-8 mm & 10-12 mm Chains)

Code:

01.119.34

A heavy-duty anchor chain stopper made of AISI 316 stainless steel, designed to prevent accidental release of the anchor and chain, and to relieve strain on the windlass while at anchor. This device clamps the chain securely and bears the anchor’s weight. Key features:

Secure Locking: Deluxe pawl mechanism that grabs a chain link firmly, preventing the anchor from slipping or dropping even in waves or vibration.
Windlass Protection: By taking the pull of the chain, the stopper shields your windlass from shock loads and overload, extending its life and enhancing safety.
Two Sizes: Available in two versions – small (60x50 mm base) for 6-8 mm chains, and large (80x70 mm base) for 10-12 mm chains, to suit the needs of most boats and yachts.

Chain:

Price: 90⁰⁰лв. €46⁰²

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0.290 Kgs

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An anchor chain stopper is a crucial component of the anchoring system on any larger boat or yacht, where safety and gear preservation are paramount. This model, made entirely of polished 316 stainless steel, is built to withstand harsh marine conditions and the constant loads from a heavy anchor and chain. Its design includes a fixed base, which is bolted securely to the deck (typically near the windlass or anchor locker), and a pivoting locking arm (pawl) that clamps down on the chain.

How it works: After you deploy the anchor to the desired chain length, engage the stopper by placing one of the chain links into its slot and dropping the locking pawl. The stopper’s toothed jaw grabs that link and locks the chain in place. This way, the entire anchor load (and forces from wind/waves) transfers to the stopper and the deck, rather than to the windlass gypsy. You can then relax the tension on the windlass – a big advantage during long stays at anchor, as it protects the windlass motor and gearbox from wear and overheating.

Besides its safety role, the stopper also keeps the anchor more securely in the stowed position during transit. Prevents accidental release: In rough seas or vibration, not using a chain stopper could allow the chain to creep out of the windlass a bit – the stopper prevents this by holding the anchor firmly in place.

Sizes & Compatibility:

Small Stopper (Osculati code 01.119.34): Suited for 6 mm and 8 mm chains. Base size approx 60 x 50 mm, height ~47 mm. This covers the needs of boats up to around 10-12 meters (33-40 ft) that typically use those chain sizes. It’s compact yet very strong – easy to install in the limited space on the bow.
Large Stopper (Osculati code 01.119.35): Designed for 10 mm and 12 mm chains. Larger base ~80 x 70 mm, with an overhang height of ~63 mm. Intended for big yachts and motor vessels (above ~12 m / 40 ft), where chains and anchors are heavier. The robust construction handles the highest loads in its class.

Installation is done with through-deck bolts and a backing plate underneath (if applicable) for load distribution. Usage: Ensure the chain has a little slack between the windlass and the stopper once engaged, so the stopper bears the full load. When weighing anchor, release the stopper first (lift the pawl) while holding the chain with the windlass brake or tension, then continue hauling in.

With this stainless steel chain stopper, you gain peace of mind – your anchor will stay put both underway and at anchor, with no risk of the chain paying out unexpectedly. It is especially recommended for extended anchoring or when weather deteriorates, where sudden gusts can put high stress on the anchoring system. Investing in a stopper is investing in the safety of your boat and the longevity of your anchoring equipment.