Chain stopper
The chain stopper or chain pincers is an anchor holding device between the anchor winch and anchor hawl, which fixes the chain to the anchor .
To relieve the anchor winch of the tensile force of the anchor chain when anchoring, the anchor chain with anchor can be held by a chain stopper. The chain is then fixed and the windlass can be relieved.
Types
The chain stopper can be constructed in different ways. The most common versions are:
- Image No. 1: The lever chain stopper is a device attached to the lower part of the deck, through which the chain runs, on which an upper part attached to the lower part by a hinge is placed over the chain in order to secure it appropriately.
- Photo no. 2: With the spindle chain stopper, the twisting of two movable jaws together by means of a spindle causes a chain link of the anchor chain to be pinched.
- Fig. 3: Suitable metal constructions and securing by means of tensioning screws .
- Picture no. 4: The fixing of the chain by hooking a claw or hook.
Chain stoppers are usually designed for 80% of the chain breaking load. Whether a chain stopper is required depends on various factors (e.g. ship construction, max. Braking torque of the anchor winch, chain size).
In nautical parlance, a chain stopper is also a chain end with a short spliced line for briefly stopping a steel wire line during the mooring process of a ship.
Pictures for explanation
Picture no. 1, lever chain stopper
Picture no. 2, spindle chain stopper
Fig. 3, anchor holding device on board a container ship using tensioning screws
Picture No. 4, claw protection
literature
- Author collective: Stahlschiffbau . transpress Verlag, Berlin 1989, ISBN 3-341-00410-6 .
- K. Schwitalla, U. Scharnow: Lexicon of seafaring . Born in 1988, transpress VEB Verlag für Verkehrwesen Berlin, ISBN 3-344-00190-6 .
Individual evidence
- ^ U. Scharnow: Lexicon of seafaring . 1990, transpress publishing house for transport in Berlin, ISBN 3-344-00190-6 . Page 276
