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Old 09-09-2013, 06:26 AM   #21
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Great link.

What type of sails and fasteners (in lack of a better word) would be cheap, reliable and easy to use for sail assist or emergency propulsion?
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Old 09-09-2013, 07:54 AM   #22
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What type of sails and fasteners (in lack of a better word) would be cheap, reliable and easy to use for sail assist or emergency propulsion?

The most likely use of emergency sail propulsion would probably come from a dirty fuel tank contaminating the last set of fuel filters.

In that case REAL sailing ability is required , so what is common for the sail area chosen on an sailboat would be needed.

If the ability to go to windward was not required , the old square sail type spar could be hoisted , and you would blow downwind at a higher speed. Probably 35 deg P or S of dead downwind could be steered.

To beat off the proverbial Lee Shore , a genuine large and robust sail rig is required.
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Old 09-09-2013, 10:02 AM   #23
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Quote:
Originally Posted by FF View Post
If the ability to go to windward was not required , the old square sail type spar could be hoisted , and you would blow downwind at a higher speed. Probably 35 deg P or S of dead downwind could be steered.
In an emergency, 70 degrees of control is way better than 360 degrees of helplessness
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Old 09-09-2013, 10:24 AM   #24
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My Coot has the "sail-assist option." I can make steerage way downwind with windforce 3. Need both my main and jib to accomplish that. ... Both sails roll up around their interior stays.

Here under both power and sail:



Windforce 3 from the beam will add about a half-knot to the boat's speed (say from six knots under power only to 6.5 knots under sail and power) and reduce the level of rocking.

"Charging" under power and main alone:

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