Mooring Chain Specs: chain
R4 studless 137 to R5 studless 137
Offshore mooring and anchor chain specifications per IACS UR W22 (studless) and IACS UR W7 (studlink). Chain grades R3, R3S, R4, R4S, R5 with nominal diameters 16–162 mm. Properties: minimum breaking load (MBL) in kN, proof load in kN, weight per unit length in kg/m, link length and width in mm, Young's modulus in GPa. Also includes wire rope (6×19, 6×37, spiral strand) and polyester rope (3-strand, braided) entries for taut-leg mooring system comparison per API RP 2SK.
| mooring component | record id | elongation modulus GPa (GPa) | grade | link length mm (mm) | link thickness mm (mm) | link type | link width mm (mm) | mbl kN (kN) | nominal diameter mm (mm) | proof load kN (kN) | weight kg m (kg/m) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| chain | R4 studless 137 | 77 | R4 | 822 | 137 | studless | 459 | 7,384 | 137 | 5,317 | 374.6 |
| chain | R4 studless 162 | 77 | R4 | 972 | 162 | studless | 543 | 10,167 | 162 | 7,320 | 523.2 |
| chain | R4 studless 76 | 77 | R4 | 456 | 76 | studless | 255 | 2,433 | 76 | 1,752 | 114.6 |
| chain | R4 studless 92 | 77 | R4 | 552 | 92 | studless | 308 | 3,493 | 92 | 2,515 | 168.1 |
| chain | R4 studlink 107 | 64 | R4 | 642 | 107 | studlink | 385 | 4,629 | 107 | 3,333 | 250.6 |
| chain | R4 studlink 76 | 64 | R4 | 456 | 76 | studlink | 274 | 2,433 | 76 | 1,752 | 126.1 |
| chain | R4 studlink 92 | 64 | R4 | 552 | 92 | studlink | 331 | 3,493 | 92 | 2,515 | 185.2 |
| chain | R5 studless 107 | 77 | R5 | 642 | 107 | studless | 358 | 5,720 | 107 | 4,233 | 227.5 |
| chain | R5 studless 122 | 77 | R5 | 732 | 122 | studless | 409 | 7,328 | 122 | 5,423 | 296.5 |
| chain | R5 studless 137 | 77 | R5 | 822 | 137 | studless | 459 | 9,124 | 137 | 6,752 | 374.6 |
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