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rigging sizes and proportions in Lees

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Hi there:


I've been doing a bit of planning for a future build (Corel's HMS Bellona) and have been consulting James Lees' Masting and Rigging of English Ships of War to flesh out the vaguer aspects provided by Brian Lavery's Anatomy of the Ship HMS Bellona and correct or improve upon Corel's design.


One thing that has struck me as strange is the proportion that Lees gives for lower stays - "1/2 the diameter of the appropriate lower mast" (p. 185). This would mean a main stay that would be almost 5mm and the forestay 4mm (based on information obtained from Lavery)!! On a 1:100 model that seems way too thick....is Lees off base here or am I missing something? Any wisdom any of you can provide would be most welcome. Thanks a lot in advance!


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Lees is giving you rigging circumference. You need to calculate diameter from that and then divide by your scale denominator. For instance, if the mast diameter is 30 inches, then half that would be a 15 inch circumference stay. The diameter of the stay would be about 4.77 inches. At 1/100 scale that would be .047" diameter. A diameter of 3/64" would do nicely.



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At least for the British ships, back in the day, circumference was the predominant measurement. At some point, rope of 1" diameter or less was measured in diameter not circumference.   Today, breaking strength is a commonly used specification as there are so many more materials available to make rope. 


Practically, it is easier to measure the circumference than the diameter, so that may be the reason circumference was the commonly used dimension.   For our model rigging, it is easier to measure the diameter with a micrometer than some how accurately measure the circumference. 



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