I think Simon has made a few typo's in the calculations and that is the cause of the weird rating numbers.

If I punch in the specs of the Taipan 4.9 (NO SPI !) into the schrs calculator (off the www.schrs.com website) then I find :

Taipan 4.9 sloop no spi = 1.055
Taipan 4.9 cat no spi = 1.058

With spinnakers we get

Taipan 4.9 sloop + spi = 1.025
Taipan 4.9 cat + spi = 1.008

As you see these numbers are very close to the ones for the F16's

F16 2-up = 1.020
F16 1-up = 0.994

(Texel has F16 2-up = 102, F16 1-up = 101)


Specs used for the Taipan (real measurements) :

mainsail + mast : 14.58
mainsail luff : 8.03 mtr
jib 4.08 sq. mtr.
jib luff : 4.85 mtr.
weight ready to sail : 102 kg
length : 4.95 mtr.
width : 2.34 mtr.
board area : 0.160
board depth : 0.550

Wouter