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Can Hanse 312 stand on it’s keel ? |
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mikaelnordman 
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Joined: 16 June 2005 Location: Finland Status: Offline Points: 3 |
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 Topic: Can Hanse 312 stand on it’s keel ?Posted: 19 November 2005 at 09:02 |
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How much does the bottom of the Hanse 312 flex when it stands on it's
keel. The boat is quite flat bottomed, and the stringers on the bottom are basically cut off at all the intersections. Does it need to 'hang' a little in the aft and front supports or can the keel and the bottom take the complete weight, when the boat is standing on the ground. The manual says that, "If the yacht is to stand on the keel over a long period of time, forward and after quarters have to be supported efficiently in order to relieve the structure." What does that mean in practice ? What kind of cradles have You been using ? What kind of cradle does Hanse provide ? Does it's front and aft supports offload the keel ? What is Your experience in this matter ? Mike Edited by mikaelnordman - 19 November 2005 at 09:03 |
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alain5
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Joined: 21 June 2004 Status: Offline Points: 20 |
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Posted: 13 December 2005 at 07:52 |
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very interesting question . sorry no idea for a hanse 31x. somebody had a very bad experience with a First 31.7 (Beneteau). the GRP tore near the keel area.
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Scotch Mist
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Joined: 01 December 2004 Location: United Kingdom Status: Offline Points: 43 |
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Posted: 31 December 2005 at 17:13 |
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Dont know the answer for sure. I have spoken to an owner who regularly dries out at scrubbing posts - therefore all weight on the keel (a 311). he hasnt reported a problem. Also commonly you will see 311/2s standing on keel but with props all round to stop it toppling over. |
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Andrew
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iemand
Admiral 
Joined: 13 February 2004 Location: Germany Status: Offline Points: 1099 |
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Posted: 01 January 2006 at 12:34 |
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My 312 always stands on the keel with four supporting stands to provide
the boat from falling aside (not very tight!). all the weight of the
boat is on the keel. in greifswald the boats are hanging in huge trays
during the assembling. One of the last steps is than the mounting of
the keel which is than also hanging under the boat. But that is just
for assembling!!! The regular winter storage at Yachtzentrum Greifswald
is the same I described above. I heard just once of a Bavaria 32 with
problems with that. I m shure Ralph can give us some more information
about that.
Regards Thomas. |
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Stella*Nova
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Joined: 25 January 2004 Location: Lelystad / NL Status: Offline Points: 776 |
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Posted: 02 January 2006 at 09:09 |
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Thats right, Thomas, Duo to this experience I agreed with Hanse to do the following check whilst the acceptance. The 341 was craned out of the water in Greifswald and stand (nearly) completely on its keel. Then I checked if there are any hull problems or deformations. To make a long story short - there was nothing, no noises, no cracks, no buckling. Now after sailing in rough conditions I know that the ship is really solid built and I know it was a good decision. |
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BR Ralf, Ex. 'a mare' H370
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Hefring
Lieutenant Commander 
Joined: 14 November 2004 Location: Norway Status: Offline Points: 78 |
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Posted: 03 January 2006 at 13:08 |
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Hie Compared with Bavaria and Gib'sea the Hanse hull is much more solid. compare the innerliner and you will see the difference. When hoisting the two other boat types you can see the side of the hull shiver, Hanse doesn't do that. When they delivered our boat they placed it with all its weight on the keel - no problem and it stayed like that for the whole weekend. But I would not hoist my boat on land for a longer period - a month or two during summer and let it just rest on the keel. The heat could give some problem.
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Hefring
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christian
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Joined: 17 April 2005 Status: Offline Points: 175 |
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Posted: 03 January 2006 at 13:44 |
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Hanse 370e # 346
X Hanse 312 #247 1991 11:Metre One Design 2003 Stingray 5,2 RIB 90 Suzuki X First 25 X First Class 8 X Triss Norlin |
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Stella*Nova wrote: