Joe,
I had the same symptoms with my knotmeter last week. The boat had been
unused for several weeks with the bung installed. I installed the
transducer(s) before leaving the dock and the knotmeter read zero until we
had covered about 5 miles when it started reading correctly. I assumed
there was a build-up of growth in front of the paddlewheel, and it
performed fine for the rest of the trip.

Monty
Scandia
1991 C&C 34+
Annapolos, MD

On Mon, Aug 24, 2015 at 5:00 PM, Della Barba, Joe via CnC-List <
cnc-list@cnc-list.com> wrote:

> Coquina just got hauled this morning. Now I can go over and see why my
> knotmeter reads 0 underway, but if I pull the impellor out and spin it the
> readings are good. Any ideas why the paddlewheel spins freely in my hand
> but not in the water???
>
> BTW – the diver that cleaned my bottom said now I had 3 different colors
> of paint showing maybe it was time for more LOL. The last time I painted I
> did one blue layer and one red layer over black original. It seems to have
> ablated itself right off the boat.
>
>
>
> Joe Della Barba
>
> Coquina
>
> C&C 35 MK I
>
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