Abstract: Chain jack for the tightening of chains, comprising an upper stopper unit (20) and a lower stopper unit (30) with opposite locking pawls where each can be locked to a through-running chain (12) so that they can be detached, and also several drive units (50; 150) to push the upper and lower stopper units (20,30) mutually towards and away from each other, in which the upper and lower stopper units (20,30) each comprises two pairs of locking pawls (20a,20b;22a,22b and 30a,30b;32a,32b, respectively) which engage with mutually adjoining links (12a, 12b, . . . ) in the chain link (12), is described.

Abstract: This publication discloses a method and a winch system for powering a winch handling loads at an end of a line associated with a winch drum, the winch being powered by means of one or more electric motors and one or more hydraulic motors via a gear, in that said one or more hydraulic motors are operated when the load in the line exceeds a predetermined load level for taking care of quick hauling in or paying out the line to compensate for vertical motion of the winch, for example vessel due to waves, and the output shaft(s) of said one or more hydraulic motors are connected to the drum shaft through combination of a sun wheel, planet wheels and parallel wheels. Both a system and use of the invention are disclosed.

Abstract: A device is described for handling of a line that is coiled onto a rotary drum, where the line that is coiled is led through a breaking body (20) that gives a firm and approximately constant tightening in the stretch of the line towards the drum so that the coils of the line around the drum are lying sufficiently tightened. The device is characterised in that the breaking body (20) comprises breaking units (21,22,23) that offer resistance against the coiling of the drum (11) of the line, said breaking body (20) comprises a number of line guiding discs (21,22,23) via which the line is set up to be led and form a loop, said disc guide groves (36) offer said breaking effect against the hawser up to the drum (11).