need advice - comfortable 7m water taxi design

So i must increase waterplane area. That will decrease the problem. I cannot completely solve this problem without using monohull because almost all highspeed craft types sensitive to changes in weight.
I think vessel like these will be good for me

 

In fact, those boats are 14 meters and over, and I doubt that they are comfortable with the waves of one meter

 

No 7-10 m vessel will be comfortable in 1m waves. I am trying to find the best.

 

"Comfortable" is subjective.

 

I am talking about vertical acceleration. 0,5-0,7g cause seasickness. So vertical acceleration must be below than 0,5g.

 

I doubt vertical accelerations are directly related to seasickness, and also restricting your vertical accelerations to below 0.5g will be a job and a half.

 

I am comparing models. Maxsurf gives me some result. I am trying to lower the vertical acceleration. How am i going to measure the comfort? Do you have another suggestion?

 

Where are you running this thing, up the Bosphorus ?

 

Yes it is a sea taxi for Istanbul. Thats the reason of speed limit.

 

Is the prevailing winds direction across, or along that waterway ?

 

There is no particular wind or wave direction. But %85 of the wave height is below 1,2 m.

 

I think it is very difficult to arrive at a comfortable boat for a small number of passengers, make the boat small enough so it is economical to run, not so good for the passenger;s comfort, make it large enough that it will be comfortable, economy may suffer, you could have a boat that accomodates 30 or 40, only carrying ten, which hurts the operator.