This is an Excel file as received from US Sailing ratings office.

Perf Pack HONAHLEE

Here is text of email that accompanied:

Subject: HONAHLEE Performance Package

Enclosed is your performance package (polars) for your boat as an Excel spreadsheet.

The spreadsheet contains a number of separate pages (tabs) containing:

• Notes describing the contents of the spreadsheet.
• Documentation on the use of polar predictions.
• Detailed polars at 1 deg increments.
• Polar tables at 5 degree increments, ready for printing.
• Windward/leeward targets page, ready for printing.
• Polar charts for each wind speed with curves for main+jib, main+spinnaker, main+poled jib.
• True wind polar chart with best performance at each wind speed.
• Apparent wind polar chart with best performance at each wind speed.
• Pages that can be saved out as files for some of the popular tactical programs.

Please send an e-mail to confirm receipt of your polars.  Do not hesitate to call if you have any questions.

Regards,

Jim

Note:

Starting in 2012, the Offshore Office offered performance packages in which the standard wind speeds at 10 meters above the water (used for boat speed calculations) have been converted, for display purposes only, to wind speeds as observed at the height of the boat’s wind instruments.  This location is assumed to be at or above the masthead.  Because the wind speed varies with height above the water  you may see wind speeds in your performance package that are somewhat different from the standard speeds of 6, 8, 10, 12, 16, 20, 24.  For example, boats with tall rigs will show wind speeds on the output charts and tables somewhat greater than the standard speeds.

This feature is an option, but for 2013 the default is now to show the “masthead” wind speeds.  You can always choose to have the 10 meter winds displayed.  The boat speeds will NOT be any different as the reference wind at 10 meters is always used for calculations.

The use of masthead polars will in general give closer correlation between boat speeds as predicted and boat speeds as observed by you.

Jim Teeters
Associate Offshore Director
US Sailing
jimteeters@ussailing.org