Err, Wayne.. I hate to break it to you but every F18 does have a measurement certificate and they all rate exactly the same. Same sail size, Same build materials and beams, mast etc, same weight (within a couple of Kg) and all the rest of the measurable items are taken into account and they are all F18 and 101 Texel rating.
Macca,
Are you sure they would all rate the same if MEASURED under TEXEL?
TEXEL just rates F18’s the same way SCHRS does and applies max and min values for the items that the F18 ruleset does not control that TEXEL and SCHRS do measure; SUCH as Plate Aspect ratio and area (Texel). Texel grants “type approval” to any F18 to sail under the generic F18 rating; SCHRS does the same for the F18. Texel and SCHRS do the same for other such formula classes.
IF a Tiger / C2 / Wildcat / Shockwave WERE FULLY measured under SCHRS or TEXEL they WOULD have different ratings; in fact until about 18 months ago; the TIGER and others did have a different SCHRS from the basic F18 rating.
