CHAIN ​​TENSIONER WITH CHAIN ​​SWITCH DEVICE

Abstract

The invention relates to a chain tensioner for use at the bottom of a water system, wherein the chain tensioner is configured to adjust the length of a tension chain extending between the chain tensioner and a floating offshore installation, wherein the chain tensioner includes a chain lock for engaging and restricting a link of the tension chain in the chain passage from the end of the tension chain and a chain switch arrangement including a chain guide for engaging the tension chain in the chain passage from the end of the tension chain, wherein the chain guide is movable between a first position in which the chain lock engages a link of the tension chain, and a second position in which the tension chain passes the chain lock.