Strainstall have recently supplied 34 strain rings to Total/Fina/Elf for use in an anchor mooring system on an FPSO. These strain rings have been specially developed by Strainstall for underwater use and can be easily fitted by divers, although for this application they will be situated above the water line, but subject to very wet conditions.
The FPSO has 16 mooring lines, each of which is fitted with a chain stopper. These units will have 2 strain rings installed - one on each side of the base plate, so the strain in the chain stopper can be measured and the mooring lines kept within safe limits. | 
