Statutory Documents - MCA Publications - PYC - A Code of Practice for Yachts Carrying 13 to 36 Passengers (The Passenger Yacht Code) - Chapter 14 - Requirements for Sailing Vessels - 14.8 Equipment Numeral
14.8 Equipment Numeral
(1) When calculating the equipment numeral, sailing vessels should take into account the additional windage effect of the masts and rigging.
(2) Typically, for square rigged sailing vessels, experience based guidance on approximate increase in anchor mass and cable strength required is:
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(a) for vessels up to 50 meters in length, typically 50% above the requirements for a typical motor vessel having the same total longitudinal profile area of hull and superstructure as the square rigged sailing vessel under consideration; and
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(b) for vessels 100 meters in length and over, typically 30% above the requirements for a typical motor vessel having the same total longitudinal profile area of hull and superstructure as the square rigged sailing vessel under consideration.
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(c) For a square rigged sailing vessel of between 50 and 100 meters in length the increase should be obtained by linear interpolation.
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