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Glenn,
Did you try to get help from John Fox? If he is any kind of Sailor/NA, he did a RM curve early on in the design phase and revised it later when he had better data. If you can not, you have the RM@1, you have the complete offset table and so you can calculate the motion of the center of buoyancy. This can give you elevation of the metacenter at any angle of heel as it is only a function of hull form. Your RM@1 is based on an assumed CG. With 8600# of fixed ballast, that should be close enough to be safe. Fair Wind and Smooth Sea Matt Colie Glenn Ashmore wrote: Just verifying my standing rigging specs before approving my order and need someone to confirm my calculations. All the formulas I have found for standing rigging loads are based on RM@30 but all I have is RM@1. The formula for RM is RM=Displacement*GM* SIN but I don't have the metacenter height (GM) either so working backwards; RM/GM=Displacement*SIN therefore (I hated that word in 10 grade algebra) GM= RM/Displacement*SIN Substituting: GM=1952/24,400*.01745 GM=4.58 Now, to get RM@30: RM@30=55,931 (Say 60K lb.) Am I on the right track? |