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Masthead Sheaves - Irwin 37'
Does anyone know the dimensions of the Masthead sheaves? The boat is a 1977 Irwin 37' CC Ketch. I think the main mast sheaves are the same as the sloop. I've been up both mast but did not get measurements of the sheaves. I’d like to order replacements for them all. It would save me a six hour drive and at least one trip up the mast if you know the dimensions of sheaves.
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