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#1
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Yacht Racing
"Jeff" wrote Open 60's are a displacement boat? Shirley you jest! http://www.conradhumphreysracing.com...?articleid=211 Scroll down and it says *displacement* 8.5 tons. Cheers, Ellen |
#2
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Yacht Racing
Ellen MacArthur wrote:
"Jeff" wrote Open 60's are a displacement boat? Shirley you jest! http://www.conradhumphreysracing.com...?articleid=211 Scroll down and it says *displacement* 8.5 tons. So? The "displacement" of a boat is the mass of the water it displaces at rest. A "displacement boat" or hull is one that displaces approximately the same amount of water regardless of its speed. A "planing hull" is one that when moving lifts out of the water and thus displaces less water than its mass would imply. |
#3
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Yacht Racing
"Jeff" wrote in message
. .. Ellen MacArthur wrote: "Jeff" wrote Open 60's are a displacement boat? Shirley you jest! http://www.conradhumphreysracing.com...?articleid=211 Scroll down and it says *displacement* 8.5 tons. So? The "displacement" of a boat is the mass of the water it displaces at rest. A "displacement boat" or hull is one that displaces approximately the same amount of water regardless of its speed. A "planing hull" is one that when moving lifts out of the water and thus displaces less water than its mass would imply. Forget it Jeff. Neal is not too bright. -- "j" ganz @@ www.sailnow.com |
#4
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Yacht Racing
"Jeff" wrote in messagenews:_4OdnZkT1Z6MtCjYnZ2dnUVZ_h6vnZ2d@comca st.com... "Jeff" wrote Open 60's are a displacement boat? Shirley you jest! Ellen MacArthur wrote: http://www.conradhumphreysracing.com...?articleid=211 Scroll down and it says *displacement* 8.5 tons. Now *that* was funny So? The "displacement" of a boat is the mass of the water it displaces at rest. A "displacement boat" or hull is one that displaces approximately the same amount of water regardless of its speed. A "planing hull" is one that when moving lifts out of the water and thus displaces less water than its mass would imply. It doesn't necessarily have to "lift out of the water" just be supported (at least partially) by the force of the water flowing under the hull. Although with some boats, the lift is pretty amazing and has to be seen/felt to be believed. "Capt. JG" wrote: Forget it Jeff. Neal is not too bright. True. In fact, the above statement is one of the most convincing that "Ellen" is really the Crapton. -signed- Injun Ear (formerly known as Eagle Eye) |
#6
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Yacht Racing
True. In fact, the above statement is one of the most convincing that
"Ellen" is really the Crapton. Jeff wrote: which statement? Saying that a spec of stated displacement was an indicator that the boat in question is a "displacement hull." -signed- Injun Ear (formerly known as Eagle Eye) |
#7
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Yacht Racing
wrote Saying that a spec of stated displacement was an indicator that the boat in question is a "displacement hull." Duh! And what's wrong with saying that. Every hull that floats displaces enough water to float it. It would sink if it didn't. So every hull that floats is a displacement hull. If somebody says no it's not a displacement hull! It's a planing hull. That's wrong. It's a displacement hull that's going so fast it's planing. If you have a submarine it has a hull. When it's floating on top of the water it's a displacement hull. When it's under water it's a displacement hull weighted down enough to sink it. The same's true for a open60. When it's planing it's a displacement hull planing. Just like the submarine's a displacement hull sinking. Both of them never stop being a displacement hull. So you think something that weighs tons can just all of a sudden stop weighing anything because it's skimming along the top of the water? Did you ever skip flat rocks across the water. The rock will skip so you could say it's a planing rock. But it will sink when it stops so it's not a displacement rock. As long as a hull planing doesn't sink when it stops it's a displacement hull. Now you tell me what's wrong with me saying if a displacement is listed it's a displacement hull? If it displaces so many tons of water it's floating and displacing. That's a displacement hull. You lose Mister-Know-It-All. Cheers, Ellen |
#8
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Yacht Racing
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