505/508 - Polars

Polars

Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 505/508
Forum Description: 505/508 Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=11314
Printed Date: 27 March 2026 at 03:41
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com

Topic: Polars

Posted By: chillios
Subject: Polars
Date Posted: 16 April 2019 at 14:58

Hi all,

I have created the below polar based on the published speedguide from Hanse. note that although the speedguide shows a speed gain at lower wind speeds to go with the spinnaker, I have reserved the switch to spinnaker for 105 degrees through 165.

Hope others find this useful:

tws is true wind speed

twa is true wind angle

bsp is boatspeed in kts

tws twa bsp twa bsp twa bsp twa bsp twa bsp twa bsp twa bsp twa bsp twa bsp twa bsp

6 0 0 45 4.6 60 5.57 75 5.91 90 5.85 105 6.39 120 6.05 135 5.25 150 4.23 165 3.58

8 0 0 45 5.73 60 6.78 75 7.2 90 7.08 120 7.48 135 6.54 150 5.5 165 4.7

12 0 0 45 7.2 60 8.3 75 8.6 90 8.5 120 9 135 8.4 150 7.5 165 6.68

14 0 0 45 7.5 60 8.6 75 9 90 8.9 120 9.5 135 8.97 150 8.2 165 7.5

16 0 0 45 7.75 60 8.77 75 9.32 90 9.34 105 9.96 120 10.03 135 9.45 150 9.3 165 8.2

20 0 0 45 7.86 60 8.9 75 9.52 90 10.2 105 10.19 120 10.8 135 10.48 150 9.72 165 9.2

-Chris

P.S. I have also asked PredictWind to add this polar to their "predefined" list