G
Guest
Guest
Wot so you can fill them with inner tubes?
I think you have missed the point.
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I think you have missed the point.
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Reserve buoyancy
- Thread starter onenyala
- Start date
Twister_Ken
Well-known member
>I think you have missed the point<
Specialité de la maison
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Specialité de la maison
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spark
Member
>>Form stability depends on having no water inside the hull.
<<
In theory, yes. In practice, I have sailed, rowed and motored boats that have had flooded bilges, even to the extent of being sunk below the DWL. They were certainly more tender but I was able, on all occasions, to keep them upright and moving purposefully in the right direction. The Etap example shows that this is perfectly possible.
>>Once you take on water you need a very different pattern of buoyancy to stay upright - with the empasis on it being towards the top of the swamped hull, with the weight hanging from it to keep things upright.<<
I, of course, agree with this but only once the hull is well and truly swamped, by which time there will be very little chance of self-rescue. The source of the leak and the means by which to fix it are too far underwater to reach without breathing equipment. The boat is dead in the water and no more than a (superior, admittedly) liferaft.
My aim is to have sufficient emergency bouyancy in a low enough location in the hull to keep the boat from being catastrophically flooded. Form stability will be compromised but, while the boat is flooding I will use the available time to mitigate the reduction in stability by handing the sails or deploying a sea anchor, or whatever, secure in the knowledge that the boat is not going to sink or be swamped to such an extent that I cannot, when I'm ready, find both the source of the leak and the tools to fix it.
<hr width=100% size=1><A target="_blank" HREF=http://www.qei.co.uk/spark>http://www.qei.co.uk/spark</A>
<<
In theory, yes. In practice, I have sailed, rowed and motored boats that have had flooded bilges, even to the extent of being sunk below the DWL. They were certainly more tender but I was able, on all occasions, to keep them upright and moving purposefully in the right direction. The Etap example shows that this is perfectly possible.
>>Once you take on water you need a very different pattern of buoyancy to stay upright - with the empasis on it being towards the top of the swamped hull, with the weight hanging from it to keep things upright.<<
I, of course, agree with this but only once the hull is well and truly swamped, by which time there will be very little chance of self-rescue. The source of the leak and the means by which to fix it are too far underwater to reach without breathing equipment. The boat is dead in the water and no more than a (superior, admittedly) liferaft.
My aim is to have sufficient emergency bouyancy in a low enough location in the hull to keep the boat from being catastrophically flooded. Form stability will be compromised but, while the boat is flooding I will use the available time to mitigate the reduction in stability by handing the sails or deploying a sea anchor, or whatever, secure in the knowledge that the boat is not going to sink or be swamped to such an extent that I cannot, when I'm ready, find both the source of the leak and the tools to fix it.
<hr width=100% size=1><A target="_blank" HREF=http://www.qei.co.uk/spark>http://www.qei.co.uk/spark</A>