Sailing today 150 mph bah today we had 165 knots! and a near miss on a shackle...

[onesea]

Ok that was boat speed not wind speed! Not certain how we managed it I can ashore you its no Anderson 22.

I think the transducer did something silly when we bounced on a wave...

Deformation & Cracks anything else I did not notice?

 

[prv]

What was the shackle from?

Pete

 

[onesea]

A block that should of had (and now has) a bigger one .

 

[Ribtecer]

How did you get it undone???

 

[AngusMcDoon]

That is a feature of Seatalk. There is no error checking in the protocol (which is a major oversight), so noise on the line can lead to junk data.

 

[onesea]

How did you get it undone???

With mole grips on the pin, surprisingly easily I do not think there was much strength left in it...

That is a feature of Seatalk. There is no error checking in the protocol (which is a major oversight), so noise on the line can lead to junk data.

Good to know if t was not for the ability to plug the auto pilot in to the wind direction I am not certain I would want wind gear on my own boat again. I certainly trust my eye on the sea as much as the instruments.

 

[Iliade]

165 kt was probably attainable at the masthead given the wind strength, providing that the mast is tall, the sails well reefed (furled?) and the sea state vile; Imagine the boat getting rolled violently into wind. One would expect the electronic damping of the instrument to mask such effects, so maybe they are relying too much on the inertia of the cups. Maybe you can tweak the damping electronically?

 

[macd]

165 kt was probably attainable at the masthead....

Er, the OP made it clear that the display was boat speed, not wind.

 

[Iliade]

Er, the OP made it clear that the display was boat speed, not wind.

Doh! Maybe some hideous cross flow over the turbine, if it's that sort of transducer... If it was electrical noise one would expect it to occur frequently.

 

[AngusMcDoon]

If it was electrical noise one would expect it to occur frequently.

Not necessarily. Seatalk is somewhat prone to interference, but because of the lowly data rate and big voltage swing, not hugely so. It takes only a 1 bit change from 0 to 1 for a boat speed of 1.16 knots to become 165 knots.