Originally Posted by myocean
I still like to compare polars and just got data for the RM1200. So here our numbers again...
Over all not faster than an Elan 350. Do we have data from the Ovni?
Sorry Ulf, I cannot have a polar speed (or a stability curve) of the OVNI 395. I have asked the manufacturer and the answer was: " I am sorry to inform that I do not have neither the polar speed curves nor the stab curves at my disposal but I assume that the designer would have them. He never remitted them to us."
I find that very odd, who is the boat builder that would not want to know the performance of a boat that a designer had made for him? About the stability curve is even worse. They have answered to the PBO magazine (that always prints the stability curves when they made the boat tests) that they don't provide stability curves for publication but that they can be seen at the yard
by prospective purchasers.???? They have announced to PBO an AVS of 115º.
About speed and wind angle I had a look at three different boat magazines.
The French magazine Bateau (the French are not great in precision):
At 45º with -10??K wind = 5K
At 45º with +10??k wind = 6K
At 90º with 12K wind = 6,8
The French magazine Voiles:
With a favorable tide??? over the ground:
At 50º with -20??K wind = 7K
At 20K wind the boat could do 45º to the wind and maintained 7K.
The English magazine PBO:
"While she might need patient or help of the engine until the breeze picks up, the 395 is no slouch when it does."
AT ???upwind with 16/18K wind = 6.5K
At 90º (on the beam) with 12k wind = 6k
The Norwegian Seil magazine:
Crossing angle = + 100º
At 90º with 14k wind = 7K
It is not as good as a polar, but can give us an idea of the boat sailing potential.
We can compare those results with the ones from another cruiser the jeanneau 409 tested by the German magazine Yacht (good in precision):
At 42º with 10k wind = 6.4K
At 60º with 10k wind = 7.2K
At 90º With 10K wind = 7.5
And I am talking about a cruiser because these values are from a standard boat, not the one with the performance rig and better sails.
On that comparative speed list we can join another 40ft cruiser-racer, the First 40 (Indigo):
(black= J409 Red=D40e Blue=E380 Brown=E350 Green=Pogo 12.50 Orange=RM1200
6K wind at 70º
= 6K (6.7)(6.4)(6.2) (6.8) (5.7) (6.3)
8K wind at 60º
= 7K (7.3)(7.1) (6.9) (7.7) (6.7) (7.1)
12K wind at 70º
= 8K (8.2) (7.8) (7.2) (8.91) (7.9) (8.2)
25K wind at 110º
= 10K (10.6) (10) (9.8) (13.7) (10.1) (10.7)
25K wind at 150º
= 10.5K (10.8) (11.2) (11.2) (15.5) (10.8) (11.30)