[PUP] 103.00 oil solution
Kevin Kearney
lotusman1951 at yahoo.com
Tue Mar 4 08:06:37 EST 2008
Bill, Its your basic A/B relationship (above and below waterline), If a rig is with sail engaged it dampens roll-if not the mass aloft in effect counters (deminishing the effects of) the mass below. The addittional distance from waterline of the above mass may reach say 65ft, as opposed to 6.5ft below waterline for the keel which multiplys its influence (although significantly less weight). Also the wigglw/waggle (a non-nautical term) of the keel in the more viscous H20 as compared to less so air has its influence.
Add these stabilizing influences plus frictional air resistance forward under power,, sticks in the air unattended are a a fuel cost in terms of NMPG, that is except in following winds-then they help. Hoping for fair winds aft, but without exhause fumes. Reguards.Kevin
Kevin said
Ask any sailboater that took their mast off about
speed and stability
with and without."
Bill said
However the sailboater who removed his rig decreased
stability in terms of both roll and pitch moments of
inertia.
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