cliff
Well-Known Member
Do you know
what your boat's keel is made off? well do ya?
what your boat's keel is made off? well do ya?
LOST KEEL 36' YATCH
- Thread starter miguel
- Start date
Re: LOST KEEL 36\' YATCH
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Why?
[/ QUOTE ]
Because he does not know if he has a deep or regular draft B36. He thinks that by telling me he has a fin keel it will help distinguish his boat from the lifting and bilge keel models that don't exist.
Finally although I now believe there is a broad problem with keel attachment in both the cruising and racing Bavarias with deeper keels I still think there is enough reserve strength that a crew will get knocked off balance before a keel rips off. There is one exception to that, if someone has a moderate collision, fails to notice some fracturing of the laminate bond between hull skin and floor grid, then continues to sailing a rough weather, over time keel movement might progressively fracture the hull skin away from the grid at which point something catastrophic could happen with little additional provocation.
The good news is that Bavaria fit a humongous floor grid in their recent designs, so for say 2% of the value of a boat it should be possible to implement a proper bond between hull and grid and hence transfer keel stresses securely through to the grid.
[ QUOTE ]
Why?
[/ QUOTE ]
Because he does not know if he has a deep or regular draft B36. He thinks that by telling me he has a fin keel it will help distinguish his boat from the lifting and bilge keel models that don't exist.
Finally although I now believe there is a broad problem with keel attachment in both the cruising and racing Bavarias with deeper keels I still think there is enough reserve strength that a crew will get knocked off balance before a keel rips off. There is one exception to that, if someone has a moderate collision, fails to notice some fracturing of the laminate bond between hull skin and floor grid, then continues to sailing a rough weather, over time keel movement might progressively fracture the hull skin away from the grid at which point something catastrophic could happen with little additional provocation.
The good news is that Bavaria fit a humongous floor grid in their recent designs, so for say 2% of the value of a boat it should be possible to implement a proper bond between hull and grid and hence transfer keel stresses securely through to the grid.
cliff
Well-Known Member
Re: Do you know
10 votes and only 1 "don't know" mmmm - sofar 90% say they know what type their keel is.
BTW by suspended I really meant "bolt on"
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"Artificial intelligence is no match for natural stupidity"
10 votes and only 1 "don't know" mmmm - sofar 90% say they know what type their keel is.
BTW by suspended I really meant "bolt on"
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oakum
Well-Known Member
Re: Do you know
Presumably you or rescue service would have a position of the incident - is it uncharted or is there a rock charted??? If not could this have been a collision with jetsam/flotsam or a bloody great fish? Serious question!!!
Presumably you or rescue service would have a position of the incident - is it uncharted or is there a rock charted??? If not could this have been a collision with jetsam/flotsam or a bloody great fish? Serious question!!!
cliff
Well-Known Member
Re: Do you know
Why would I have the position of the incident?
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"Artificial intelligence is no match for natural stupidity"
Why would I have the position of the incident?
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oakum
Well-Known Member
Re: Do you know
Sorry sarky I was answering general thread not you personally - get a life!
Sorry sarky I was answering general thread not you personally - get a life!
cliff
Well-Known Member
Re: Do you know
Got a very nice one thanks - hows yours?
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"Artificial intelligence is no match for natural stupidity"
Got a very nice one thanks - hows yours?
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graham
Well-Known Member
Re: LOST KEEL 36\' YATCH
[ QUOTE ]
I bet more than 50% of yacht owners do not know what their keels are made off.
[/ QUOTE ]
Every yachtie I ever met must have been in the other 50% then. /forums/images/graemlins/crazy.gif
[ QUOTE ]
I bet more than 50% of yacht owners do not know what their keels are made off.
[/ QUOTE ]
Every yachtie I ever met must have been in the other 50% then. /forums/images/graemlins/crazy.gif
bumblefish
Well-Known Member
Re: Do you know
Handbags!!!!
Handbags!!!!
poter
Well-Known Member
Re: Do you know
Cliff,
Your poll on here, is to say the least, very suspect.
I have no doubt that forumites will understand what a keel is for & what its made of but most sail boat owners will not know!
what is the percentage of sailboat owners who suscribe to the forum?
poter
Graham: so you have spoken to 100% of all yacht owners?? /forums/images/graemlins/confused.gif
Cliff,
Your poll on here, is to say the least, very suspect.
I have no doubt that forumites will understand what a keel is for & what its made of but most sail boat owners will not know!
what is the percentage of sailboat owners who suscribe to the forum?
poter
Graham: so you have spoken to 100% of all yacht owners?? /forums/images/graemlins/confused.gif
poter
Well-Known Member
Re: LOST KEEL 36\' YATCH
Where was the incident then???
poter
Where was the incident then???
poter
graham
Well-Known Member
Re: Do you know
[ QUOTE ]
Graham: so you have spoken to 100% of all yacht owners??
[/ QUOTE ]
Erm no.Thats not how I intended my reply to read. I think you are digging yourself into a deeper hole on this.You must have a very low opinion of yacht owners.
i still maintain that the vast majority of yacht owners will know what their keel is made of but of course I can only base this on my own experience of chatting to other owners.Generally I find owners to have a very detailed knowledge of their boats.
[ QUOTE ]
Graham: so you have spoken to 100% of all yacht owners??
[/ QUOTE ]
Erm no.Thats not how I intended my reply to read. I think you are digging yourself into a deeper hole on this.You must have a very low opinion of yacht owners.
i still maintain that the vast majority of yacht owners will know what their keel is made of but of course I can only base this on my own experience of chatting to other owners.Generally I find owners to have a very detailed knowledge of their boats.
oakum
Well-Known Member
Re: leugim
Poor chap's probably wondering what's going on 'cos now he's involved in a friggin survey. Where was the "incident" leugim?
Poor chap's probably wondering what's going on 'cos now he's involved in a friggin survey. Where was the "incident" leugim?
Razorfish
Well-Known Member
Re: LOST KEEL 36\' YATCH
oh come on; its a wind up.
oh come on; its a wind up.
Tisme
Well-Known Member
Re: LOST KEEL 36\' YATCH
What, a wind up keel? I thought Bavarias were usually fixed.
What, a wind up keel? I thought Bavarias were usually fixed.
miguel
New Member
Re: LOST KEEL 36\' YATCH
My story is absolutely true , unfortunately. I wish it would'nt !
My Bavaria 36' had a long fin keel made out of lead. The fact of the matter is that the keel fell instantly and completely off with a worst of the case, 5 knots speed hit.
If you feel this is a normal outcome for the circumstances, thats another story.
My story is absolutely true , unfortunately. I wish it would'nt !
My Bavaria 36' had a long fin keel made out of lead. The fact of the matter is that the keel fell instantly and completely off with a worst of the case, 5 knots speed hit.
If you feel this is a normal outcome for the circumstances, thats another story.
Twister_Ken
Well-Known Member
Re: LOST KEEL 36\' YATCH
Is it normal? I don't know. I'd like to think not, but I do know of a Sigma 33 that lost its keel after hitting the Bramble Bank. A capsize resulted. I also know a Sigma 36 that punched its keel up into the hull with resulting open cracks, after hitting the bar at Exmouth. It sank, and was recovered at the next low water.
Boats do hit rocks, and it would be nice to think that the designers and builders allow for that in the scantlings, but it seems maybe not.
Is it normal? I don't know. I'd like to think not, but I do know of a Sigma 33 that lost its keel after hitting the Bramble Bank. A capsize resulted. I also know a Sigma 36 that punched its keel up into the hull with resulting open cracks, after hitting the bar at Exmouth. It sank, and was recovered at the next low water.
Boats do hit rocks, and it would be nice to think that the designers and builders allow for that in the scantlings, but it seems maybe not.