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Tackle Regulations

Version of section 27 from 2006-03-22 to 2007-06-30:

  •  (1) No pulley block shall be used in the processes unless the safe working load is clearly stamped upon it.

  • (2) The safe working load of a single-sheave block is to be taken as the maximum load that can safely be lifted by the block when the load is attached to a rope passing around the sheave of the block.

  • (3) In the case of a single-sheave block where the load is attached directly to the block instead of to a rope passing around the sheave, it is permissible to lift a load equal to twice the safe working load of the block as determined in subsection (2).

  • (4) Where a rigging arrangement plan is available on board, it is permissible to use single-sheave blocks in any position where the maximum “working load” or “resultant” is not more than double the safe working load or half the proof load of the block.

  • (5) Where no rigging arrangement plan is available on board, single-sheave blocks shall have a safe working load not less than the load being lifted or hook load.


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