Efficient no wash hull shapes

[Simi 60]

Pulled some old footage off the phone today and still amazes me at how quiet and stress free our old girl travels.

@ 1150 rpm (not 11500 as stated )and a but of current assist

Check out the wash or lack thereof.

 

[78puget-trawler]

Make a bit more fuss at hull speed?

 

[MurrayM]

Three knot or so current?

 

[Simi 60]

Three knot or so current?

Not sure exactly but we usually do 7.5 knots at 1150rpm

 

[Simi 60]

Make a bit more fuss at hull speed?

Marginally.

 

[rslifkin]

That's impressive. I can almost match the wash up front at low speeds, but your stern wake is cleaner / smaller than mine is at idle!

 

[Comodave]

I wish I had a no wash hull shape, I have to wash mine when it gets dirty...

 

[Britannia]

I understand the the Prismatic Coefficient of a hull design gives a good indicator how much water will be displaced as it moves at certain speeds. The lower the number the "finer" the entry of the boat and hence less wake. That's how I read it.

My Krogen 54 has a PC of 0.6 and at a couple of knots under hull speed displays a wake much like yours.

Richard