As I said, if all three lines lead to a single double block or fiddle block at the end of the boom, it would be a 3:1 pretty clearly. The line going forward to the block mid-boom does add some purchase—since the two blocks effectively act as a single large diameter block, but probably not as much as if it was at the boom's end.... mid-boom sheeting gives less leverage than end-boom sheeting. That is why I say it is closer to a 3:1, but not quite 3:1.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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Still—DON'T READ THAT POST AGAIN.