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Brian Whatcott

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On 21 Nov 2004 12:18:14 -0800, (Love a
Sheep) wrote:

I am learning to sail and have a few questions. I understand that the
sails can act either as an airofoil (lile an aircraft wing) or like a
parachute where the wind simply blows the sail directly. My question
is this. If the wind is ahead of the beam ie we are sailing windward
then I expect that the airofoil principle must always hold there
otherwise we would be sailing backwards!

However, if the wind is aft of the beam on say the starboard side then
surely we have a choice where to set the sails ie they can be on the
starboard side (ie the boom is pointing to the starboard side) where
they act as an airofoil or on the port side where they act as a
'parachute' - is this right or am I missing something. If so which is
best?

Thanks

Using the aerofoil analogy, the mast edge of the main sail and the
forward stay edge of the jib would be the leading edges, so I don't
follow that if the wind is from abaft starboard, why you would want
the boom out to starboard.

Brian W

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