R4S Mooring Chain

R4S Mooring Chain – High-Strength Solution for Demanding Offshore Applications

Premium-Grade Performance for Critical Moorings

The R4S mooring chain represents an advanced strength category in offshore mooring systems, offering superior tensile strength (≥960MPa) – making it ideal for:

Floating production platforms
Deepwater oil & gas installations
Heavy marine construction projects
Permanent offshore structures

Mooring Chain Grade Comparison

Grade	Tensile Strength	Typical Use
R3/R3S	690-800 MPa	Shallow-water applications
R4S	≥960 MPa	Deepwater installations
R5	≥1100 MPa	Ultra-deepwater projects

Parameters:

Chain	Breaking Load	Studless Tension	Stud Tension
Dia.	(kN)	(kN)	(kN)
(mm)
34	1451	1017	1146
36	1621	1136	1279
38	1799	1260	1420
40	1985	1391	1567
42	2180	1527	1721
44	2383	1670	1881
46	2594	1818	2048
48	2813	1971	2221
50	3040	2130	2400
52	3275	2295	2586
54	3518	2465	2777
56	3768	2640	2975
58	4026	2821	3178
60	4291	3006	3387
62	4563	3197	3602
64	4842	3393	3823
66	5128	3593	4048
68	5421	3798	4280
70	5721	4008	4516
73	6182	4332	4881
76	6659	4666	5257
78	6984	4894	5514
81	7484	5244	5909
84	7997	5603	6314
87	8523	5972	6729
90	9062	6350	7154
92	9428	6606	7443
95	9987	6998	7885
97	10366	7263	8184
100	10944	7668	8640
102	11336	7943	8950
105	11932	8361	9420
107	12335	8643	9739
111	13155	9217	10386
114	13781	9656	10880
117	14416	10101	11381
120	15059	10552	11889
122	15493	10856	12232
124	15931	11162	12577
127	16593	11626	13100
130	17263	12095	13629
132	17713	12411	13984
137	18852	13209	14884
142	20008	14019	15796
147	21179	14840	16721
152	22364	15669	17656
157	23559	16507	18600
162	24765	17352	19551
165	25492	17861	20125
168	26221	18372	20701
171	26953	18885	21279
175	27930	19570	22050
178	28665	20085	22630
180	29155	20428	23017
182	29646	20772	23405
185	30381	21287	23985
188	31117	21802	24566
191	31852	22317	25146
194	32585	22831	25725
197	33318	23345	26304
200	34048	23856	26880
205	35261	24706	27838
210	36466	25550	28789