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  1. #1
    Join Date
    Nov 2013
    Location
    Humboldt Bay
    Posts
    135

    Default Polars

    Does anyone know where I can find polars for a particular boat? Is there a website, formula or sailmaker to consult? Any help is appreciated, thanks.

  2. #2
    Join Date
    Aug 2015
    Posts
    24

    Default

    Here's a few links to some that you may get lucky with:

    http://jieter.github.io/orc-data/site/

    http://www.blur.se/boats/

    http://l-36.com/polar_polars.php

    U.S. Sailing Sells them: http://store.ussailing.org/browse.cf...age/4,158.html

    I wasn't able to locate any for Althea and ended up generating them in real-time on the SHTP using the polar plugin for OpenCPN. I wrote a bit about it during the race.

    HTH!
    Last edited by brett; 09-19-2016 at 07:40 AM.

  3. #3
    Join Date
    Nov 2013
    Location
    Humboldt Bay
    Posts
    135

    Default

    Thanks Brett,
    I did find the OpenCPN site. I felt kinda silly for asking about polars when I can barely fly a spinnaker, but I felt I was missing some kind of secret knowledge. Anyway, I figured out it's something one has to experiment with on one's own boat.

  4. #4
    Join Date
    Jan 2010
    Posts
    3,485

    Default

    Quote Originally Posted by Steevee View Post
    Thanks Brett,
    I did find the OpenCPN site. I felt kinda silly for asking about polars when I can barely fly a spinnaker, but I felt I was missing some kind of secret knowledge. Anyway, I figured out it's something one has to experiment with on one's own boat.
    With a beautiful boat like yours I don't know how you can feel silly about anything. I also see instruments on your boat. My understanding of polars is that I would need to have instruments into which I would input the polar information. Except that ... DM's instruments consist of a fish finder/depth finder and my handheld garmin gps. I guess instead of concerning myself with polars I'll just keep on sailing by telltales and put on that woolen hat as the weather here starts to feel ... polar.

  5. #5
    Join Date
    Sep 2007
    Posts
    3,688

    Default

    It got intense just before the 2006 SHTP when two of my out-of-town competitors arrived with shore crews. One was a sailmaker, flown out from the right coast to help the skipper get ready. They walked the docks at Marina Village, sizing up the competition, asking what our ratings were, etc.

    I'm not as seat-of-the-pants "old school" as Philpott. At the other extreme I'm not a fan of routing software. I'm somewhere in between, using a page of upwind and downwind "targets" printed out and taped up in Rags' cockpit.

    With the mind games being played before the race I decided it was time for action. Rags was backed into her slip so the page of downwind targets would be clearly visible. I made two sets - the real ones and the "other" ones I taped in the cockpit. (I'm not telling which set is in the attached photo.) This was successful, as I caught the skipper and his sailmaker staring at the targets with dismay. "WHAT'S your rating again?"

    I'd encourage the OP to contact Bob Perry and ask for the targets generated from his designer's VPP for the Tashiba 31. This will give you most of the information you need.
    .
    Attachment 1826
    Last edited by BobJ; 10-05-2016 at 10:17 AM.

  6. #6
    Join Date
    Jan 2010
    Posts
    3,485

    Default

    Quote Originally Posted by BobJ View Post
    Now THAT'S a screensaver!

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