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Old 10-14-2016, 12:28 AM   #1
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Active fin stabilizer retrofit - I have pushed the 'button'

Hi everybody,

After reading many helpful threads here about active fin stabilizers, and following one trip to Sydney and two trips to the Whitsundays (all from home port in Brisbane), I have succumbed and ordered a set of active fin stabilizers.

I got quotes from Trac and Naiad. The Trac quote was about AUD45k higher, so I opted for Naiad (Model 252, 7.5sq foot fins and the new Datum controller). Cost estimate is around AUD75k installed, including the 'pads' which the stabilizers attach to. All work done by the Naiad Australian rep and a shipwright in Brisbane.

I will update this thread with progress/tips/suggestions on the way through, in case others are considering a similar project at some stage.

H.
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Old 10-14-2016, 12:37 AM   #2
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Dear H.
I think you've made a great choice. I too retrofitted my 46 EU with Naiad 252 system. S3 Maritime in Seattle did the work. Has worked very well for approx. 200 hours of service.
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Old 10-14-2016, 02:02 AM   #3
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H
You won't regret it or begrudge even $1 of the cost. My Naiad's were installed in the US in mid 2013 and have been flawless. Over 700 hours now. Mine are the same model as yours, but I have the MultiseaII controller. Not sure how much improvement the Datum will bring - my unit is very good. Once I get back to Brisbane from the Reef I'll be hauling out and Naiad seals (3 yearly service) will be done.

Your prices seem in broadly line with what I obtained prior committing to a US install before importing my boat, after allowing for exchange rate variations over the period.
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Old 10-14-2016, 08:18 AM   #4
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They are a great addition. I installed them (ABT in my case) in my Grand Banks 47 EU which is essentially the same boat. Here's a series of blog entries documenting the installation. You might find it interesting to see what your boat will go through.
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Old 10-14-2016, 08:27 AM   #5
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Don't leave home without them!!
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Old 10-14-2016, 12:11 PM   #6
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I have the same model Naiads with the datum controller. The datum features an adaptive setting that automatically adjusts to the sea state so there is no further input needed. There is also a setting that allows manual adjustment, but I never use that.
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Old 10-14-2016, 12:17 PM   #7
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Here is a pic of my Datum controller. Click image for larger version

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Old 10-14-2016, 08:47 PM   #8
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Thanks for the great replies guys, I will post updates as the work progresses.

Twistedtree, I read the blog on your 47 some time ago with keen interest thanks.

Brian, I passed Insequent in Mackay marina on the way up to Hammo this year, and again at Nara Inlet one day in late Sept. You have done a great job bringing Insequent up to spec - she looks like new.

Hamish.
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Old 10-14-2016, 11:02 PM   #9
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Thanks Hamish
Glad the $$$ spent hasn't been wasted, and that folks do notice!
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