Dr29er

Hi Dr29er. I am also getting in touch with you about that laser polar graph. Is there any chance you still have it? I am writting a thesis on the physics of sailing and have modelled the boats on lasers. I cannot find a polar graph for them anywhere though.

Much appreciated thanks.

Peter

[email protected]

Ciao, my name is Fabio from Italy. I've found this your very old post:

Will,

I have a polar graph like you describe. It is in a booklet by Frank Bethwaite that he sent me a couple of years ago. The booklet is titled "Dynamic Advances in the 90's: Sources of Speed: Apparent Wind Sailing". I have emailed Frank asking for permission to scan the graph and post it.

A few data points from that graph (the columns line up using a fixed-width font):

Wind Speed Close Hauled Beam Reach Broad Reach Downwind
6 kts 4 kts 5.4 kts 5 kts 4.1 kts
9 kts 4.8 kts 6.3 kts 6.1 kts 5.5 kts
12 kts 5 kts 7.3 kts 8 kts 6.7 kts

David

The graph is not longer available (of course). Can you send me?
Sorry for my bad english David.

Have good wind.

Fabio [email protected]
ITA191805