CB/T 3844-2000 Roller Type Chain Stopper

The CB/T 3844-2000 Roller Type Chain Stopper is a heavy-duty marine deck fitting designed to secure and guide the anchor chain between the anchor windlass and hawse pipe. It combines a chain-locking mechanism with a large guide roller, allowing the anchor chain to pass smoothly through the stopper while providing reliable chain holding during anchoring and navigation.

When the stopper is closed, the locking bar engages the anchor chain and transfers chain tension to the ship’s structure. This helps isolate the anchor windlass from continuous anchor chain loads and reduces unnecessary stress on the windlass brake, gearbox and other components.

The integrated roller supports and guides the anchor chain as it moves through the anchoring system, helping reduce friction and improve chain alignment.

Manufactured according to CB/T 3844-2000, the roller-type chain stopper is suitable for anchor chains with diameters ranging from approximately 42 mm to 132 mm, making it suitable for medium and large commercial vessels, offshore vessels and other heavy-duty marine applications.

Boomarine can supply different sizes according to anchor chain diameter, vessel specifications and project requirements.

Dimensions of CB/T 3844-2000 Chain Stopper (mm):

Nominal dia.	Anchor chain dia.	L	L1	D	h1	h2	B	Weight (kg)
44	42-44	1000	370	484	392	281	380	343
48	46-48	1050	420	528	414	306	446	390
52	50-52	1100	440	572	440	338	510	480
56	54-56	1150	450	600	460	354	556	608
60	58-60	1200	470	620	490	378	610	739
64	62-64	1250	500	640	520	400	666	811
68	66-68	1300	550	680	540	420	732	1061
73	70-73	1350	570	730	580	460	800	1229
78	76-78	1400	610	780	630	490	865	1494
84	81-84	1460	650	840	670	530	940	1758
90	87-90	1540	710	900	720	570	1030	2171
95	92-95	1600	740	950	760	610	1080	2567
102	97-102	1680	790	1020	800	650	1150	2755
107	105-107	1750	840	1070	860	690	1210	3640
114	111-114	1820	880	1140	910	740	1270	4302
122	117-122	1880	930	1220	980	790	1340	5326
132	124-132	1960	1000	1320	1060	860	1440	6244

* Technical data may be adjusted according to project requirements. Please provide the anchor chain diameter, chain grade, vessel information and required classification society when requesting a quotation.

Features of CB/T 3844-2000 Roller Type Chain Stopper

1. Integrated Roller Guidance

The large roller guides the anchor chain smoothly between the windlass and hawse pipe, helping maintain proper chain alignment during anchor handling.

2. Reliable Anchor Chain Holding

The locking mechanism securely engages the anchor chain and helps transfer anchoring loads away from the windlass.

3. Reduced Windlass Load

Once the chain stopper is engaged, anchor chain tension can be transferred to the vessel structure, reducing continuous loading on the windlass and its brake system.

4. Heavy-Duty Construction

Designed for large anchor chains and demanding marine environments, the robust steel structure provides excellent mechanical strength and long-term reliability.

5. Wide Chain Size Range

Available for anchor chains from 42 mm up to 132 mm, providing options for different vessel sizes and anchoring system requirements.

6. Marine Corrosion Protection

Marine-grade protective coatings can be applied to improve corrosion resistance in saltwater, humidity and harsh offshore environments.

7. Easy Inspection & Maintenance

The relatively straightforward mechanical construction allows convenient inspection of the roller, shaft, locking mechanism and supporting structure.

8. Custom Manufacturing Available

Dimensions, materials, coating systems and installation details can be customized according to vessel drawings and project specifications.

How Does a Roller Type Chain Stopper Work?

The roller type chain stopper is normally installed on the deck between the anchor windlass and hawse pipe.

During anchor handling, the anchor chain passes over the integrated roller, which helps guide the chain and reduce unnecessary friction.

After the required anchor chain length has been deployed, the locking mechanism is engaged with the chain. The stopper then holds the chain securely and transfers the chain load to the ship’s deck structure.

This arrangement reduces continuous loading on the windlass and helps protect the windlass brake and transmission system.

During anchor recovery, the locking mechanism is released so the chain can move freely over the roller toward the windlass.

Applications of CB/T 3844-2000 Roller Type Chain Stopper

The CB/T 3844-2000 roller type chain stopper is designed primarily for marine anchoring systems and can be used on:

• Bulk carriers
• Container ships
• Tankers
• General cargo vessels
• Offshore support vessels
• Engineering vessels
• Large commercial ships
• Workboats
• Offshore marine structures
• Other vessels equipped with heavy-duty anchor chain systems

It is particularly suitable for applications requiring both anchor chain securing and roller guidance in a single deck-mounted unit.

How to Select the Right Roller Type Chain Stopper?

When sending an inquiry, we recommend providing the following information:

Anchor Chain Diameter
For example: 60 mm, 84 mm or 102 mm.

Anchor Chain Grade
Please specify the applicable chain grade or standard.

Required Standard
CB/T 3844-2000 or other specified standard.

Vessel Type
Cargo ship, tanker, bulk carrier, offshore vessel, etc.

Classification Requirement
CCS, ABS, BV, DNV, LR, NK or other classification society if required.

Quantity
Specify the number of chain stoppers required.

Drawing or Technical Specification
Providing the vessel’s deck arrangement or technical drawing will help us verify dimensions and installation requirements.

Surface Treatment
Specify the required marine coating system or project paint specification.

FAQ

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