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Anchor Rope Break Load and Chain Compatibility Chart

The strength (breaking load) of your anchor rope should be broadly comparable with the strength of your anchor chain.

Anchor Rope Break Load by Rope Type
Rope \ Rope Diameter 10mm 12mm 14mm 16mm 18mm 20mm 24mm
LIROS 3 Strand Nylon 2400Kg 3300Kg 4400Kg 5600Kg 7000Kg 8140Kg 11800Kg
LIROS Anchorplait Nylon 2650Kg 3460Kg 4590Kg 6010Kg 7340Kg 8360Kg 12030Kg
LIROS Octoplait Polyester 2000Kg 2400Kg 3800Kg 4700Kg 5800Kg 7600Kg 11600Kg
LIROS 3 Strand Polyester 2000Kg 2600Kg 3600Kg 5000Kg 6000Kg 7000Kg 10500Kg
Chain Break Load by Grade
Chain Diameter 6mm 7mm 8mm 10mm 12mm 13mm 14mm
Grade 3 Stainless 3200kg 5000kg 7200kg
Grade 40 Galvanised 2400kg 3000kg 4000kg 6500kg 9200kg 10800kg 12700kg
Grade 6 Stainless 3800kg 6400kg 10100kg 14500kg 17000kg
Grade 70 Galvanised 7000kg 11200kg
Comparing the two charts shows approximate compatibility as follows:
Nylon Anchor Rope Broadly Comparable***
10mm 6mm Grade 40 Galvanised
12mm 7mm Grade 40 galvanised and 8mm G3 Stainless
14mm 8mm Grade 40 Galvanised and 10mm G3 Stainless
16mm 10mm Grade 40 Galvanised, 10mm G3 Stainless. 8mm G6 Stainless
18mm 10mm Grade 40 Galvanised, 10mm G6 Stainless, 8mm Grade 70 Galvanised
20mm 12mm Grade 40 Galvanised, 12mm Grade 30 Galvanised
24mm 13mm/14mm Grade 40 Galvanised, 10mm Grade 70 Galvanised

***Broadly comparable means approximately plus or minus 10%

Check the relative break loads carefully before making your selection, and take all the relevant factors into account.