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Hull anode |
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Syakka 
Lieutenant 
Joined: 11 June 2022 Location: Hamburg Status: Offline Points: 21 |
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 Topic: Hull anodePosted: 19 October 2022 at 17:15 |
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Good evening,
yesterday we finally have taken our nice Hanse 312 out of the water - to my big surprise there was a hull anode on the starboard side. Not sure what it is actually doing at a plastic boat, but there is certainly a reason. Furthermore there were several rusty spots on the keel (Iron?) and I suppose it has to do with that. The anode looked very good (= too good if it had worked + the keel did not look so good). So anyway: I would like to replace it with a "good" one. What is your advise? How often do you replace this thing? Where is the best replacement? Cheers, Marcel
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Captain Cook
Admiral 
Joined: 23 May 2006 Location: Denmark Status: Offline Points: 1245 |
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Posted: 19 October 2022 at 18:49 |
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Maybe you should check if the "anode" has a yellow/green wire attached from the inside of the boat. Radio grounding plates are normally placed on the hull under the pantry. My grounding plate still looks like new after 15 years.  Edited by Captain Cook - 19 October 2022 at 18:55 |
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Freya H400 #27 (2006),2-cabin, 40HP 3JH4E, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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BWW
Sub Lieutenant 
Joined: 27 August 2020 Location: Gothenburg Status: Offline Points: 1 |
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Posted: 22 October 2022 at 09:39 |
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Hi, I have a hull anode between engine and rudder with a wire inside connected to the ’rudder stock’, which is a aluminium aluminium one, on my 315.
//Billy
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415 Singapore
Vice Admiral 
Joined: 23 September 2013 Location: Singapore Status: Offline Points: 935 |
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Posted: 23 October 2022 at 07:14 |
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Hi Billy, I guess your rudder is a a Jefa one, you should check with them if the aluminum stock should be earthed. Night Train came with this installed by Hanse, but following chat on this forum I checked with them and Hanse as the boat was still under warranty. They both agreed that this should be removed.
If you do an advanced search here, remembering to change the date field you will find lots of info All the best Paul
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Paul - Night Train - 415 #136
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Ian Coverdale
Captain 
Joined: 19 June 2019 Location: Travelling Status: Offline Points: 311 |
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Posted: 23 October 2022 at 16:10 |
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Jefa's current advice is here ... https://jefa.dk/electrolysis/
This states there should be no electrical connection between rudder, propulsion system and keel (boat's electrical earth?). There is also special painting instructions if you use Coppercoat type antifouling. Our 2013 Hanse followed Jefa's earthing recommendations but not Coppercoat recommendations which we rectified at last haul-out. Cheers.
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Ian & Andrea
SV Gabrielle (H445) Liveaboards - currently Montenegro. www.facebook.com/sailinggabrielle |
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