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#11
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Capsize Prevention
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#12
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
On Sun, 18 Oct 2009 13:49:56 -0400, Jeff wrote:
Since most un-powered boats are not registered, its not easy to determine their relative safety. We'd have to look at hours spent in various types of boats, etc. There were statistics published sometime in the last couple of years which showed that deaths in canoes and kayaks were way out of proportion to their overall numbers. Canoes and kayaks are usually unregistered of course. |
#13
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
On Sun, 18 Oct 2009 12:46:12 -0500, Vic Smith
wrote: Totally different than doing it while afloat, which from what I've seen is darn near impossible without motor power, unless it's a very light weight boat, even with a crew of strong men. Strong men turn into weak men pretty quickly in cold water. The best way is with a work barge and hoist. After the hull is upright the next challenge is to get the water out before it capsizes again. |
#14
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
On Sun, 18 Oct 2009 15:17:30 -0400, Wayne.B
wrote: On Sun, 18 Oct 2009 13:49:56 -0400, Jeff wrote: Since most un-powered boats are not registered, its not easy to determine their relative safety. We'd have to look at hours spent in various types of boats, etc. There were statistics published sometime in the last couple of years which showed that deaths in canoes and kayaks were way out of proportion to their overall numbers. Canoes and kayaks are usually unregistered of course. That's not surprising. Seems like an awful lot of people with very little boating knowledge are buying or renting rotomolded Kayaks and blithely heading out into dangerous situations. It's become as big a fad as hula hoops, but a lot more dangerous. |
#15
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
Vic Smith wrote:
On Sun, 18 Oct 2009 09:21:53 +0200, "Edgar" wrote: Vic, if you put auto inflating bags on both gunwhales you will enure that you will never get her upright again but she will float nice and high while upside down. That seems counterintuitive. The gunnel bags would be inflated before the roll over. If the boat is already turtled or rolling past the ability of the bag buoyancy to right it when inflated, it would be as you say. That's a no-no. (-: But in case you're talking about heavy seas flipping a boat, you're absolutely right. Bags on the gunnels are worthless. I was thinking about the more common swamping situations. Anyway, without thorough testing and an understanding of the weight/buoyancy dynamics of a particular boat I wouldn't stand by any contraption I propose. The Royal National Lifeboat Institution in Uk used to have boats that were inherently self righting but such a boat does tend to turn over more often than necessary which is a pain even if it rights itself afterwards. Modern lifeboats are not inherently self righting but instead have an automaically inflating buoyancy bag which is centrally mounted in the superstructure so it exerts maximum righting leverage whichever way she turns over. That's similar to the masthead bags for sailboats. Then the problem becomes righting the boat from a laid down position. I was thinking that a good system for an open boat would prevent the capsize due to swamping, and leave only the bailing. No need to go outside the gunnels. But on that subject of righting, my recollection of righting small boats is that once one gunnel is free of the water, the rest of it goes pretty easy as that side lightens right up as water leaves it. Then the only issues left are not to let inertia roll it again on the other side, and getting it bailed out. The boats I righted always had me standing on the bottom, so muscles can be well-used. Totally different than doing it while afloat, which from what I've seen is darn near impossible without motor power, unless it's a very light weight boat, even with a crew of strong men. If I were in the business of righting small boats, I'd carry a rig to make an A-frame over a capsized hull to get some leverage. Maybe 10-12 foot scaffolding type tubes. One side has a hook to go over the offside gunnel, one side a clamp for the nearside gunnel on a u-joint. Both are joined at the apex, where a line is attached. Should make it a lot easier to roll the boat back over pulling on the nearside, whether with a power boat or men in the water. Man, I wish I lived by that warm Florida water where I could monkey around with this stuff. That would be fun. If the fishing is slow, go play with turtled boats. --Vi I hope the obamadytes don't get wind of this thread, if they do some system of righting the boat will be a Federal safety requirment on your next boat, to protect you from yourself. |
#16
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
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#17
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
"Tosk" wrote in message ... That is exactly what that idiot from Canada is trying to do. He has been lobbying our USCG for a long time, and of course if he comes to your news group, you are in trouble... No problem. I'll just lobby Canada to require everyone to wear a safety harness and helmet in the shower, and to ban all staircases. -- KLC Lewis WISCONSIN Where It's So Cool Outside, Nobody Stays Indoors Napping www.KLCLewisStudios.com |
#18
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
On 10/18/09 3:49 PM, Tosk wrote:
That is exactly what that idiot from Canada is trying to do. He has been lobbying our USCG for a long time, and of course if he comes to your news group, you are in trouble... Don't you have an old rowboat to paint? -- Conservatives are not necessarily stupid, but most stupid people are conservatives. - John Stuart Mill |
#19
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
"Wayne.B" wrote in message ... On Sun, 18 Oct 2009 12:46:12 -0500, Vic Smith wrote: Totally different than doing it while afloat, which from what I've seen is darn near impossible without motor power, unless it's a very light weight boat, even with a crew of strong men. Strong men turn into weak men pretty quickly in cold water. The best way is with a work barge and hoist. After the hull is upright the next challenge is to get the water out before it capsizes again. A 13' Whaler is near impossible to right without a large ship and a crane. Acquaintance flipped his and a week later when it was found, they had to tow it the 10 miles to the harbor while it was inverted. They could not get enough leverage to right the boat. |
#20
posted to rec.boats,rec.boats.cruising
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Capsize Prevention
On Sun, 18 Oct 2009 14:56:47 -0500, "KLC Lewis"
wrote: No problem. I'll just lobby Canada to require everyone to wear a safety harness and helmet in the shower, I thought most accidents occurred in the bedroom ? |
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