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The 2 boats at the bottom of '0' class may relegate down, as well as
top 3 in latter list may need to go up when fine tuned.
Class 0 Sportsboat (Super 8)
Dibley 8000
Dibley 23
Phuket 8 (Duncanson)
Magic 25 (Hobie)
Lutra (s)
79er
Elliot 770
Elliot 780
Elliot ESPX
1720 Cork
MINI Transat 21
T7
T750
T8
T830
T870
Viper 830
Open 7.5
Martin 243
Young Rocket 780
Young 840
Steath(s)
Boatspeed 23 (Charley)
JS 9000
1720 Cork
Melges 24
Class 1 Sportsboat (Super 7)
T650
Elliot 7
Beneteau 27.7
SB3
J/80
T590
Platu 25
SR-21
Viper 640
UFO 22
U 20
Bull 7000
Rocket 22 (Pocket)
Elliot 650 (eagle)
Hunter 707
Backman 21
Pooch's 21
BONGO !!! LOL can be used for 'in harbor sudden death' series, this
is great postrace/layday entertainment at Hammo in 2.4's and Lasers p.s
only the best get thru elims.)
SA 525 sqf. Disp. 6116 lb. SA/D 25 up 57 down
Let's not try to get the list to inclusive as it will defy the purpose
of getting to fun racing. Boats like the Bendytoy fits fine with the
rest of the leadbellies.
I think the around 30 foot boats should be included - division breaks
will take care of the speed differencies. Main reason for inclusion:
numbers and similar performance characteristics.
Cheers,
Steve Bowman
U20 #001
SILVER
============================
I remember that article - pretty good. As far as I remember his
criteria were SA/D (uphill) higher than 30 and D/L under 100. Am I
right?
This is a link sent in by Heriberto in SAnarchy that has some good
observations, I don't think we considered it closely enuf
http://www.phrfne.org/page/823
speshly the SBR / IRC bit table information, it confirms in favour of
IRC, it appears C1720 is the Pommy 'control' boat.
This is valid too; from phrfNE
IRC also has a separate rule for "sport boats" called the Sport Boat
Rule (SBR). Many of the boats rated by this rule are not what we would
normally consider to be true sport boats. Among these are the J80,
Tripp 26, and Beneteau Platu 25. On purpose, the SBR ratings are to a
different scale than the IRC ratings so they cannot be mixed. As above
you should look at the deltas between the boats and not the magnitudes.
A constant of 565 seems to give a reasonable conversion for one end of
the boat spectrum. This constant has no effect on the deltas. The
following is an SBR to PHRF comparison table using the formula:
PHRF = (600/TCC) - 565
SBR/IRC/PHRF Comparison
Boat SBR TCC PHRF from SBR IRC TCC PHRF from IRC Actual PHRF
see the table on the above link could cut/past successfully
This shows that true sport boats, like the Melges 24, are much more
severely treated compared to the boats like the J80 by the SBR than
under PHRF. This is likely due to common sport boat features such as
large mainsail roach and low displacement to length ratios.