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470e keel - survey results |
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colinc 
Commander 
Joined: 08 May 2019 Location: UK Status: Offline Points: 134 |
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 Posted: 03 February 2021 at 19:45 |
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If they say no leakage then that isn't a problem. It is impossible really to tell that just looking at the photos. Ditto whether paint is old or new. The surveyor is the one to rely on. They have hands on and experience. So show surveyor the photo of keel construction, and if they still say so, follow investigation advice - assuming current own allows. |
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Wild
Commadore 
Joined: 18 March 2010 Location: Turkey-Greece Status: Offline Points: 455 |
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Posted: 03 February 2021 at 19:57 |
I do not believe the keel counter plate is aluminium On our 545 they are galvanized steel fixed in epoxy |
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Wild and Wet
Belgium 545e#268 |
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iemand
Vice Admiral 
Joined: 13 February 2004 Location: Germany Status: Offline Points: 992 |
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Posted: 03 February 2021 at 20:22 |
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if you have a GRP innerliner (l think all Hanses except the 470) the plates should be stainless steel
On the Hanse 470 you have a steel innerframe galvanized. I assume that the keel is bolted directly to that fram but not 100% sure.
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Hanse 312 MJ 2004 - Hanse 370e MJ 2007
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marabou
Sub Lieutenant 
Joined: 02 February 2021 Location: GR Status: Offline Points: 5 |
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Posted: 28 February 2021 at 11:27 |
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I would like to thank everyone for their contributions.
We did a sea trial in ideal testing conditions and the bilge stayed dry. Indeed the steelwork had been painted silver but no evident signs of corrosion. The keel bolts & engine mounts looked undisturbed with no signs of a grounding. The 470e has been bought, see you all in the water!
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Captain Cook
Rear Admiral 
Joined: 23 May 2006 Location: Denmark Status: Offline Points: 624 |
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Posted: 01 March 2021 at 01:48 |
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Good luck with the new member of your family.  If the thru-hulls are
older than 8-10 years, you should plan an exchange. The vertical crack
should be rinsed of the corrosion, and closed again. It was
mentioned, that the keel bolts are of stainless steel. That does not
sound realistic. SS has more carbon in the mix, and is weaker than
normal steel. In my H400 the ten M40 bolts and the plates are made of
zinc-plated steel. Have a look at my 15 year old bolts: (The blue stuff is Loctite). Update: If you believe that your bolts are SS, prove it with a picture. The difference is plainly visible.  Edited by Captain Cook - 01 March 2021 at 09:05 |
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Freya Hanse400 #27 from 2006, 40HP Yanmar 3JH4E, Teak deck, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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iemand
Vice Admiral
Joined: 13 February 2004 Location: Germany Status: Offline Points: 992 |
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Posted: 01 March 2021 at 08:15 |
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I am pretty shure that the keel bolts are Stainless steel and not galvanized. Although your are right in saying that galvanized steel is stronger.
BR Thomas
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Hanse 312 MJ 2004 - Hanse 370e MJ 2007
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marabou wrote: