One of the main points I was trying to make is that meaningful comparisons can only be made if the boats are in similar conditions in cruising condition over a period of time.
For instance Gunboat claim that their boats reach over 400M per day occasionally and regularly over 300M, but the owner of the Gunboat 66 stated that these numbers are purely for racing
mode and on a trip like the ARC
he averages around 240M.
claim the 49 should regularly do 300M days but in the 2012 ARC
a well equipped one averaged around 200M days.
It appears to me that when new boats are designed the company takes it out with no fuel
/ furniture equipped and does tests and polars and then makes statements like xyz boat did regular 300M days, whereas in fact when you equip the boat for cruising and fuel
it is a very different story.
Where then are potential purchasers to best get accurate info in regards to real performance. I would think that rallies like this would be a good source.