Yacht Time Correction YTC rule

[weaver_fish]

Indeed, we did a regatta using Byron (which became YTC).

Byron didn’t become YTC. YTC was created at Mylor Yacht Club as an alternative to Byron from some rather complex maths from a club in Chichester I think that sought to reverse engineer a formula from PY numbers that were already in existence. The idea was to come up with a simpler and more accessible way of rating boats that had no PY but that wasn’t based on race to race performance like NHC or at up front cost like IRC.

It’s rather grown since then!

 

[st599]

Our Byron rating and our YTC rating are the same, and requested the same information.

 

[weaver_fish]

Our Byron rating and our YTC rating are the same, and requested the same information.

Good! Byron was a really useful resource in an area that the RYA had neglected but the problem was it relied on one person and donations to expedite

Which wasn’t great for people entering regattas. Also over time, different clubs’ PY numbers had diverged

If you google SWYTC you can see how it all came about… and spread beyond Falmouth

The chap who led on it did an amazing job to encourage casual racers back into the fold

 

[The Q]

Byron didn’t become YTC. YTC was created at Mylor Yacht Club as an alternative to Byron from some rather complex maths from a club in Chichester I think that sought to reverse engineer a formula from PY numbers that were already in existence. The idea was to come up with a simpler and more accessible way of rating boats that had no PY but that wasn’t based on race to race performance like NHC or at up front cost like IRC.

It’s rather grown since then!

Err no, YTC is based on the work of Professor Linda Wolstenholme of Emsworth Slipper sailing club.
I've pages of spreadsheets to develop a handicap for my one off boat from her formula.

 

[st599]

The chap who led on it did an amazing job to encourage casual racers back into the fold

Well he's failed with my club - not touching a regatta that uses that again. Any rating that puts a sailing school boat and a stripped out racer with carbon rig and dyneema sails at the same level is useless.

 

[st599]

Err no, YTC is based on the work of Professor Linda Wolstenholme of Emsworth Slipper sailing club.
I've pages of spreadsheets to develop a handicap for my one off boat from her formula.
View attachment 177940

I wrote something similar in Python. Worked, but there's a random number generator in there called keel curve or similar with no method given for evaluating it.

 

[weaver_fish]

Well he's failed with my club - not touching a regatta that uses that again. Any rating that puts a sailing school boat and a stripped out racer with carbon rig and dyneema sails at the same level is useless.

But the point is that the stripped out racer should be in IRC - this was designed for low key club racing

 

[The Q]

Good! Byron was a really useful resource in an area that the RYA had neglected but the problem was it relied on one person and donations to expedite

Which wasn’t great for people entering regattas. Also over time, different clubs’ PY numbers had diverged

If you google SWYTC you can see how it all came about… and spread beyond Falmouth

The chap who led on it did an amazing job to encourage casual racers back into the fold

Well he's failed with my club - not touching a regatta that uses that again. Any rating that puts a sailing school boat and a stripped out racer with carbon rig and dyneema sails at the same level is useless.

Professor LINDA Wolstenholme.

 

[weaver_fish]

Professor LINDA Wolstenholme.
View attachment 178279

 

[weaver_fish]

Yes indeed HE based YTC on HER formula/work with her kind permission.