[C38] Flying an asymmetrical

Joseph Launie jlaunie at cox.net
Thu Jan 24 01:32:55 EST 2008


Steve,
    The advantage of an A chute over a conventional one is more than 
just sailing short handed. The A chute lets you sail with a lot less 
skill and muscle on the foredeck. We have two conventional chutes and 
never use them for that reason.  With 60 boats racing on wednesday nite 
in a small town like Santa Barbara, skilled crew is mighty scarce. Joe 
/Macavity

S. Orton wrote:
>  Hi Phil, 
>  
> There is an old saying: "dead down wind is dead slow", unless the 
> pressure is 14 kts and up.  A look at the Cat38 polars shows an 
> optimum run at 8 kts of true wind and 106 degrees relative angle 
>  gives a boat speed of 5.1 kts.  A dead down wind run  with the above 
> conditions will give 3.9 knots.  At less wind velocity (4-5 kts) down 
> wind, your spin may collapse further diminishing the boat speed.  I 
> haven't done the VMG math on the above situation, but I suspect our 
> polars are correct.  I personally believe the only advantage of an 
> asym is sailing short handed for the Cat38.  For a sprit boat (J-120) 
> that is a different story.  I do use a code 0 (which is a small asym 
> of 785 sq ft.) in 4 -7 kts of true wind at 70 -110 degrees relative angle.
>  
> Steve Orton
> Santa Susanna
> Oceanside,CA
>
>     ----- Original Message -----
>     *From:* eyriepg at comcast.net <mailto:eyriepg at comcast.net>
>     *To:* Catalina 38 list <mailto:Listserve at catalina38.org>
>     *Sent:* Wednesday, January 23, 2008 4:10 PM
>     *Subject:* [C38] Flying an asymmetrical
>
>     I crewed on a 2002 Beneteau 411 in Everett, WA last Sunday.  It
>     had a new 150% genoa and a new roller furling main.  It has a
>     reputation of correcting last so I was curious about what they
>     were doing wrong.  I have to say that, with its shoal wing keel,
>     it was a slug in 6-7 knots of wind.  Also, the crew didn't really
>     know how to sail the boat.
>      
>     The skipper has had difficulty jybing the sail outside the
>     forestay so they rigged it so they jybe it like a genoa inside the
>     forestay.  It seemed to work OK but they had to furl the genoa
>     before unsocking the asym.  My real question concerns the efficacy
>     of going wing and wing with the asym and the main.  The skipper
>     claimed that he had the same speed going dead downwind this way
>     compared to a heading with a relative wind angle of 150 with both
>     sail on the same side of the boat.  I have never read anything
>     about sailing wing and wing with an asym and main.   Do you have
>     any experience doing this?
>      
>     Phil Gay
>     C38 049 Que Linda
>     Everett, WA
>
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