Mooring Chain
Calculator

Offspring International has over 30 years’ experience in the supply of chain for offshore mooring systems including of stud link and studless chain in R3, R3S, R4, R4S and R5 offshore grades up to and including 220mm diameter.

Our chain calculator provides guidance for mooring chain sizing, grade and load performance. For more help determining the chain specification required for your project email: mail@offspringinternational.com.

You can also find out more about Offspring International’s range of chains for Single Point Moorings, Conventional Buoy Moorings as well as FPSO, FSO and FLNG on the Offshore Grade Mooring Chain page.

Chain Calculator

Enter "xxx" mm chain diameter




  Studlink Chain Studless Chain
 
Common Link Enlarged Link End Link Pear Link (No Standards)
  Common Link End Link (No Standards)  
Nominal Bar Diameter
100 110 120 130
  100 120  
Inside Length
400 440 435 600
  400 435  
Overall Length
600 660 675 860
  600 675  
Overall Width
360 400 400 440
  335 400  
Inside Width
    160 180
  135 160  
Weight / Meter
219.00      
  202    
Grade
API ORQ RQ3 RQ3S RQ4
API ORQ RQ3 RQ3S RQ4
Proof Load (KN)
5040 5616 6480 7776
5317 5616 6264 6912
Break Load (KN)
7596 8028 8964 9864
7596 8028 8964 9864
Grade
  R4S R5  
  R4S R5  
Proof Load (KN)
  8640 9036  
  7668 8028  
Break Load (KN)
  10944 11520  
  10944 11520  
Length Tolerance
15      
       
Width Tolerance
9 Offspring International accepts no liability for the accuracy of the information presented, which is for guidance only.
Bar Stock Tolerance (Minus 0)
2.5 Please refer to specific classification or client standards.