4.5.3.1 Wire rope used for standing rigging (stays
or shrouds) should not be flexible wire rope (fibre rope core).
4.5.3.2 The strength of all blocks, shackles,
rigging screws, cleats and associated fittings and attachment points
should exceed the breaking strain of the associated running or standing
rigging.
4.5.3.3 Chainplates for standing rigging should
be constructed to effectively carry and transmit the forces involved.