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Another cause of leeway
http://www.hobie.com/au/en/forums/viewtopic.php?f=32&t=60229		 Page 1 of 1
Author:  mmiller [ Wed Apr 05, 2017 10:53 am ]
Post subject:  Re: Another cause of leeway
A slow steady pedal action will help you gain upwind performance at a higher angle. Especially with an inflatable.
Author:  tpdavis473 [ Wed Apr 05, 2017 6:37 pm ]
Post subject:  Re: Another cause of leeway
I think about it more in terms of boatspeed. In light breeze with boatspeed low (about the same speed I could pedal/paddle), I can improve pointing by 20 degrees or more by human power. When the sailplan is working so that the boat is moving faster than I can "help" it, I'll take the lower course unless there is an obstruction I can pass if I assist. A lot is experience in your conditions and your boat. A lot also is how fit you are and how much of a hurry you are in.
Author:  tpdavis473 [ Sat Apr 08, 2017 7:59 am ]
Post subject:  Re: Another cause of leeway
daft wrote:
Standard wind drag causes leeway...

But some contact with boat designers (book and forum) made me aware of another contributor to leeway: a shallow surface water current driven by the wind if it has enough speed, fetch, and duration.


Surface water current? If the wind has sufficient speed, fetch and duration, you will get waves/chop. That will definitely slow you in a little light boat and provide opportunity for more leeway. Your other scenario when in protected waters has also eliminated fetch so you "shoot upwind".

Seriously, I don't think you need concern yourself about a surface water current causing leeway. :mrgreen: If it helps you, though, by all means, invent more reasons why you can't go to weather.
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