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(b) While the lock is being filled or emptied and until they are allowed to leave, vessels shall be made fast and the mooring ropes shall be so handled as to prevent bumping against the walls, gates or protective devices or against other vessels or assemblies of floating material;

(c) The use of fenders, which Fendering devices shall be used. If they are not part of the vessel, the fenders shall be floating fenders if movable, shall be compulsory;

(d) It is prohibited for vessels and assemblies of floating material to discharge or run off water onto the copings or onto other vessels or assemblies of floating material;

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