paul
regular
Reged: 30/05/2001
Posts: 72
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For some time now I've heard a noise which sounds like a fire crackling or rice crispies popping under my hull. As I don't seem to have a fire nor do I have any rice crispies on board it must be something else. Any ideas?
thanks
Paul
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WindFinder
regular
Reged: 03/03/2008
Posts: 291
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Quote:
For some time now I've heard a noise which sounds like a fire crackling or rice crispies popping under my hull. As I don't seem to have a fire nor do I have any rice crispies on board it must be something else. Any ideas?
Nothing relevant to offer but I recently read a book on the Mary Celeste and the one theory on what happened (in fact there was far moe evidence for what happened than I ever realized - suspect the evidence was omitted from accounts to make it seem more interesting and mysterious) is that the swelling timber cargo (packed frozen IIRC) cracked and sounded just like a fire burning. Indeed it wouldn't have been the only ship to be abandoned for exactly that reason.
I appreciate this is of no help at all but it's kind of relevant to your post and I've typed it out now so I'm hitting the button anyway!
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david_bagshaw
regular
Reged: 05/06/2001
Posts: 903
Loc: UK
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Prawns or other marine life feeding?
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David
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Silkie
regular
Reged: 19/01/2004
Posts: 1652
Loc: Scotland
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Snapping shrimp perhaps?
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Sleep after toyle, port after stormie seas.
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cliff
regular
Reged: 15/04/2004
Posts: 5710
Loc: various
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Sounds like Polymites in a feeding frenzy just before their breeding cycle. Best have your boat lifted and treated for polymites as if left untreated these little creatures can and will chew their way through FRP. They particularily like polyester based GRP but are also known to chew epoxy. You should also tell the owners of the boats moored around you that you are infected so they can have their boats treated as well and in the meantime fly flag "D" to warn other boats to stay clear.   
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 Artificial Intelligence is no match for Natural Stupidity
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dave1234
regular
Reged: 06/09/2007
Posts: 189
Loc: brisbane australia
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hi when did you last clean it ??? if you got shells and normal growth on bottom its the little crechers moveing round and feeding, but not on your structure, it is normal , if you need cleaning then thats what it is dave
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jimbaerselman
regular
Reged: 18/04/2006
Posts: 1736
Loc: Greece in Summer, Southampton ...
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Agreed, snapping shrimps. There was considerable research on this subject by the US Navy during the cold war, because the background noise created interfered with sonar detection.
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Jim Baerselman
http://www.jimbaerselman.f2s.com/ or Google 'jimb sail'
Compares the Cruising areas of Europe
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JimmyNoBoat
regular
Reged: 13/11/2005
Posts: 633
Loc: Landlocked in the Midlands
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Had the same thing on a SunSail boat in Greece years ago. We had no idea what it was and even wondered if it was some kind of leak.
SS imediately said 'It's fish feeding off the hull'
You wouldn't think they'd like rice crispies would you?
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Tell us your story www.sailtales.co.uk
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VicS
regular
Reged: 13/07/2002
Posts: 9283
Loc: Home: Kent. Boat: Chichester
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Quote:
snapping shrimps. ................... during the cold war,
Just hope its not buster crabs!
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Old Chemists never die, they just fail to react
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bilbobaggins
regular
Reged: 12/02/2005
Posts: 6925
Loc: The Shire
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"The old 'uns are the best 'uns....?"
Clearly a fan of the Sainted Des!
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'You may very well think so. I couldn't possibly comment!'
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