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Ross 930 polars


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On 27/01/2025 at 9:33 AM, Leftred said:

Are any two 930s alike anymore?

Nope but at the moment I chose a Sunfast 3200 or Dehler 30OD as a benchmark. It would be nice to get something closer. Hmmm anyone splashed the cash on a Predictwind data hub yet and wants to loan it out?

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On 27/01/2025 at 6:53 PM, splat said:

Here's some old ones from two NW Pacific Boats.

 

ross930.xlsx 9.81 kB · 16 downloads

Hi Splat,

I am pleased to say that these worked fantastically during the Northern Triangle. I used the base data and then tweaked a little where I know we are a bit faster off the wind with a rather large A2 up. Having polar performance data continually showing certainly made both co-skippers keep working hard to keep the numbers at 100% or better. I may just put the Predictwind data hub on my Christmas wish list which will improve this continually.

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On 28/01/2025 at 2:09 PM, Norwegian Blue said:

Nope but at the moment I chose a Sunfast 3200 or Dehler 30OD as a benchmark. It would be nice to get something closer. Hmmm anyone splashed the cash on a Predictwind data hub yet and wants to loan it out?

Predict Wind data hub polars are excellent in the app for routing, departure planning etc. but no good for actual polars. They’re way more complex, in ways that are totally over my head, but when I asked if we could export them it was explained, with absolutely no understanding at my end, that it wasn’t a useable format.

On the plus side, it makes their weather routing almost supernaturally accurate. Just amazing!

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2 hours ago, Norwegian Blue said:

Hi Splat,

I am pleased to say that these worked fantastically during the Northern Triangle. I used the base data and then tweaked a little where I know we are a bit faster off the wind with a rather large A2 up. Having polar performance data continually showing certainly made both co-skippers keep working hard to keep the numbers at 100% or better. I may just put the Predictwind data hub on my Christmas wish list which will improve this continually.

It would be beneficial to add a with/without weed option to the spreadsheet as well.

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On 11/03/2025 at 7:07 PM, CarpeDiem said:

It would be beneficial to add a with/without weed option to the spreadsheet as well.

Too many variables... Arev you carrying weed onboard or wrapped around appendages? and how much weed?

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