Chain Stopper

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Chain stoppers are also known as cable stoppers and are a device (hook) that secures the anchor chain when the anchor is raised, taking the strain away from the windlass while the ship is in motion. IACS requirements state that a chain stopper should be able to withstand a pull of 80% of the breaking load on its chain. The windlass with brakes in use and cable lifters not in use should be able to withstand a pull of 45% of the breaking load of the chain. Common chain stoppers include guillotine, screw chain, roller chain, and shackle chain stoppers.

As a major supplier of deck fittings, WAC recommends the Japanese standard cast steel, bar type chain stopper or roller chain stopper as detailed on this page.

Japanese Standard Casting Bar Type Chain Stopper
Parameters of

Nominal Diameter	40	44	48	52	56	60	64	68	73	78
Suitable Chain Diameter	38-40	42-44	46 - 48	50 - 52	54 - 56	58 -60	62 - 64	66-68	70 - 73	76 - 78
A	378	412	450	491	528	564	600	635	675	715
B	540	590	640	695	745	795	850	900	960	1020
C	390	424	460	494	530	564	600	636	678	720
D	336	366	397	428	4 57	488	517	547	5 82	617
Weight (kg)	111	139	176	216	261	319	396	482	608	739

Roller Chain Stopper

CB/T 3844-2000

Parameters of

Nominal Diameter	Anchor Chain Diameter	L	LI	D	h1	h2	B	Weight (kg)
44	42-44	1000	370	484	392	281	380	343
48	4 6-48	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	660	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	830	790	1340	5326
132	124-132	I960	1000	1320	1060	860	1440	6244