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Subject: Re: [worldcruising] Towed Generators
From: David Martin (galatea_49@XXX.XXX)
Date: Tue Sep 10 2002 - 13:33:25 EDT
Steve
Thanks for getting back so quickly
Yes I was aware of the fishing problem. I also realise the need for additional weight at higher speeds - although difficult to adjust at sea!
Everyone I have spoken to has stressed the retrieval problem - most emphasis the need to stop the boat (not always easy)
Some use a bucket or large funnel with a slot cut in it - so that it can be sent down the line to "smother" the turbine
What make/model did you have - and how big is the boat?
What sort of output did you experience?
David
Galatea
----- Original Message -----
From: Steve Strand
To: worldcruising@XXX.XXX
Sent: Tuesday, September 10, 2002 6:20 PM
Subject: Re: [worldcruising] Towed Generators
We used a similar system on a cruise about 10 years ago. Several problems
with the towed unit. First of all, going downwind ours was not heavy
enough, would come out of the water and then spin, tangle and be REALLY
difficult to bring in and untangle, a bit scary at night when a bit over
hull speed. This certainly could be fixed with additional weights on the
leading edge of the propeller unit. Secondly, it is essentially impossible
to troll for fish while pulling the unit as a tuna or wahoo would almost
certainly tangle with the towed unit, this would be especially exciting.
All that aside, we towed the unit from Moorea to Hawaii, and never used our
genset, arrived with batteries fully charged and refrigeration cold, it was
great.
steve
s/v Danzante
At 05:48 PM 9/10/02 +0100, you wrote:
>I am considering fitting a towed turbine to my 49 foot sailing boat for
>ocean passages. I would be interested to hear from anyone who has
>experience of them.
>I am specifically considering the Aquair 100 which is made by Ampair. It
>has a wind turbine option whereby the generator can be hoisted into the
>rigging and fitted with a vane to act as a conventional wind generator.
>The manufacturers literature suggests that a 6 amp charge can be sustained
>at around 7 knots - enough for the autopilot and maybe the radar. I have
>a diesel generator which I use for battery charging, water maker and
>fridge/freezer - but an additional 150 amps a day when ocean cruising
>would be very nice
>
>David
>sv Galatea
>
>
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