[quote=revintage]Water density is defined as 8.34lbs/gallon if fresh and 8.57lbs/gallon if sea. Using metric units, water is 1kg/dm3 and 1.03kg/dm3 respectively . But 8 is good enough for ballpark figures 8-)
Just found a figure from multihull designer Richard Woods, with an estimate of 600kg for an older F18 hull. The 5.5 is probably just a little slimmer, but I will use this in my calculation.<!-- editby --><em>Edited by revintage on Mar 12, 2022 - 04:17 PM.</em><!-- end editby --> [/quote]
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