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#1
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Any thoughts onhow to make this boat better
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#2
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Any thoughts onhow to make this boat better
Are you saying that the water ballast inside a boat hull
does not affect it's stability? That the water ballast "weighs nothing" until it is above the waterline? Dave Doe wrote: Nope, never did. I'm saying it's stability is indeed improved (more mass to move) That would be an issue of inertia... dynamic stability, if you like the term. ... but question its righting ability vs lead keel - and posed a question about that. Well, I don't think that anybody has claimed that water ballast provides equal righting moment to external lead ballast. But it can provide significant righting moment, especially if the boat is designed from the start to utilize water ballast effectively. The problem is that water in the ballast has the same density of the water it is in Well there you go again. The water ballast is not "in water" it is in the boat. Will no amount of repetition get this point across? You used the example of an empty jug vs one 1/2 full of water... is the water in the jug "in water" or is it in the jug? Let me propose this example- a cooler full of ice & beer is lighter than water (hence lighter than water ballast) yet can be pretty heavy when you're carrying it down the dock. If you put it in the lowest possible location in the boat, right down against the hull, and tie it in securely (to the handles, so you can still open the lid of course), will this improve the boat's stability? DSK |
#3
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Any thoughts onhow to make this boat better
"DSK" wrote in message . .. Well there you go again. The water ballast is not "in water" it is in the boat. Will no amount of repetition get this point across? You used the example of an empty jug vs one 1/2 full of water... is the water in the jug "in water" or is it in the jug? Dave just doesn't get it. And he refuses to do any experiments because he is afraid of water. Scotty |
#4
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Any thoughts onhow to make this boat better
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#5
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Any thoughts onhow to make this boat better
"Dave Doe" wrote in message Perhaps you should contact Boeing and get them to replace the depleted uranium couterbalances with water ballasts. Gee Dunc, what's next, steel weighs more than aluminum? Prof. Scotty |
#6
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Any thoughts onhow to make this boat better
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#7
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Any thoughts onhow to make this boat better
"Dave Doe" wrote in message . nz... In article , says... "DSK" wrote in message . .. Well there you go again. The water ballast is not "in water" it is in the boat. Will no amount of repetition get this point across? You used the example of an empty jug vs one 1/2 full of water... is the water in the jug "in water" or is it in the jug? Dave just doesn't get it. And he refuses to do any experiments because he is afraid of water. Is the water in a plastic floating in the ocean: a) in the plastic bag? b) in the water? Well technically, it's in the plastic bag. Is the plastic bag a factor? No. So now plastic is weightless too? Oh, the fact that you can see through it is fooling you. Scotty |
#8
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Any thoughts onhow to make this boat better
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#9
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Any thoughts onhow to make this boat better
"Dave Doe" wrote in message Not a lot no. However if you use something that's heavy. You can use feathers if you like - good luck. I understand that feathers weigh nothing once in the air. SBV |
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