Max width (I need) is the width measured where the boat is widest, this is not always the mainbeam often the hulls move out a bit more behind the mainbeam and maximum width is found at 2 feet behing the mainbeam.

Can you (the reader) give me the width on the following designs (That you may own yourself and is standing in the garage)

nacra 4.5
nacra 450
nacra 5.0
nacra 500
nacra 5.2
nacra 5.5
nacra 5.7
nacra 570
nacra 6.0

Prindle 15
Prindle 16
prindle 18
prindle 18-2
prindle 19

Hobie 14
Hobie 16 (NOTE, measure on the HULLs and not on the less wide steel frame)
Hobie 17
hobie 18
hobie 18 magnum ; SX and whatever other models
hobie 20
hobie 21

That is all for now as these are the most important numbers that I need now and as it is winter over here I can't get measurements myself by walking down to my own sail club.

If you are really sure about some of these width place post these numbers in a reply to this post.