|
Top Speed Considerations
There are differences in the Specific gravity of salt vs. freshwater,
and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper |
Top Speed Considerations
Maybe in a displacement boat. But I doubt the difference would be noticable
on a planing hull. "Skipper" wrote in message ... There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper |
Top Speed Considerations
Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper Boats do float at different heights in fresh vs. salt water. Check the plimsoll lines on tankers and container ships, for instance. They are calibrated for fresh and salt, and also for differences in water temperature. That said, one has to wonder whether the resistance of the denser medium wouldn't just about cancel out the tendency to float the vessel slightly higher. For most boats, the difference is probably measurable- but so slight it would only be significant to the most extreme nit pickers. |
Top Speed Considerations
|
Top Speed Considerations
|
Top Speed Considerations
"Harry Krause" wrote in message . .. wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper How do those ocean-going boats ride in the dangerous deep waters of Derby, Kansas? Bring me up to speed on this. Why do you guys claim he lives in Derby, Kansas? -Greg |
Top Speed Considerations
"Dene" wrote in message . .. "Harry Krause" wrote in message . .. wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper How do those ocean-going boats ride in the dangerous deep waters of Derby, Kansas? Bring me up to speed on this. Why do you guys claim he lives in Derby, Kansas? -Greg Because Derby, Kansas is home to a 500-bed looney bin, that's why. All the rooms in the looney bin have been designed to look like a boat cabin, complete with portholes for windows, hatches for doors, a fold-away rack for a bed and fake throttle controls. Residents of the looney bin spend countless hours watching recorded sea tales on a big screen, HD TV. RCE |
Top Speed Considerations
"Dene" wrote in message . .. "Harry Krause" wrote in message . .. wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper How do those ocean-going boats ride in the dangerous deep waters of Derby, Kansas? Bring me up to speed on this. Why do you guys claim he lives in Derby, Kansas? -Greg Because he said so. |
Top Speed Considerations
"Shortwave Sportfishing" wrote in message ... On Sat, 28 Jan 2006 17:04:36 -0500, JohnH wrote: On Sat, 28 Jan 2006 21:37:54 GMT, Shortwave Sportfishing wrote: On Sat, 28 Jan 2006 16:16:35 -0500, JohnH wrote: On 28 Jan 2006 10:10:24 -0800, wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper Boats do float at different heights in fresh vs. salt water. Check the plimsoll lines on tankers and container ships, for instance. They are calibrated for fresh and salt, and also for differences in water temperature. That said, one has to wonder whether the resistance of the denser medium wouldn't just about cancel out the tendency to float the vessel slightly higher. For most boats, the difference is probably measurable- but so slight it would only be significant to the most extreme nit pickers. Chuck, the boiled peanuts will be in the mail Monday. Found them in Richmond. Guaranteed Virginia peanuts. You better not eat for a few days and build up an appetite! i bet he pukes them all - wanna bet? :) Well, hopefully he won't open them all at once! CHUCK - if they make you puke, send the remaining ones back to me! Now, I'll bet he doesn't puke. What'll you put up against some genuine Virginia Boiled Peanuts? [NB: If I lose, I'll have some to pay off the bet with!] two pounds of restaurant quality frozen squid. [said in my best Homer Simpson voice] mmmmmmmmmmm..........calamari........ |
Top Speed Considerations
JohnH wrote:
On 28 Jan 2006 10:10:24 -0800, wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper Boats do float at different heights in fresh vs. salt water. Check the plimsoll lines on tankers and container ships, for instance. They are calibrated for fresh and salt, and also for differences in water temperature. That said, one has to wonder whether the resistance of the denser medium wouldn't just about cancel out the tendency to float the vessel slightly higher. For most boats, the difference is probably measurable- but so slight it would only be significant to the most extreme nit pickers. Chuck, the boiled peanuts will be in the mail Monday. Found them in Richmond. Guaranteed Virginia peanuts. You better not eat for a few days and build up an appetite! -- 'Til next time, John H ****************************************** ***** Have a Spectacular Day! ***** ****************************************** JohnH, I couldn't find any, can you send about 20 lbs done my way? -- Reggie ************************************************** ************* That's my story and I am sticking to it. ************************************************** ************* |
Top Speed Considerations
On Sat, 28 Jan 2006 22:49:21 GMT, Shortwave Sportfishing
wrote: On Sat, 28 Jan 2006 17:04:36 -0500, JohnH wrote: On Sat, 28 Jan 2006 21:37:54 GMT, Shortwave Sportfishing wrote: On Sat, 28 Jan 2006 16:16:35 -0500, JohnH wrote: On 28 Jan 2006 10:10:24 -0800, wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper Boats do float at different heights in fresh vs. salt water. Check the plimsoll lines on tankers and container ships, for instance. They are calibrated for fresh and salt, and also for differences in water temperature. That said, one has to wonder whether the resistance of the denser medium wouldn't just about cancel out the tendency to float the vessel slightly higher. For most boats, the difference is probably measurable- but so slight it would only be significant to the most extreme nit pickers. Chuck, the boiled peanuts will be in the mail Monday. Found them in Richmond. Guaranteed Virginia peanuts. You better not eat for a few days and build up an appetite! i bet he pukes them all - wanna bet? :) Well, hopefully he won't open them all at once! CHUCK - if they make you puke, send the remaining ones back to me! Now, I'll bet he doesn't puke. What'll you put up against some genuine Virginia Boiled Peanuts? [NB: If I lose, I'll have some to pay off the bet with!] two pounds of restaurant quality frozen squid. One pound is enough. Will it stay frozen? -- 'Til next time, John H ****************************************** ***** Have a Spectacular Day! ***** ****************************************** |
Top Speed Considerations
On Sat, 28 Jan 2006 23:05:01 GMT, Shortwave Sportfishing
wrote: On Sat, 28 Jan 2006 17:51:48 -0500, " JimH" jimh_osudad@yahooDOT comREMOVETHIS wrote: "Shortwave Sportfishing" wrote in message . .. On Sat, 28 Jan 2006 17:04:36 -0500, JohnH wrote: On Sat, 28 Jan 2006 21:37:54 GMT, Shortwave Sportfishing wrote: On Sat, 28 Jan 2006 16:16:35 -0500, JohnH wrote: On 28 Jan 2006 10:10:24 -0800, wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper Boats do float at different heights in fresh vs. salt water. Check the plimsoll lines on tankers and container ships, for instance. They are calibrated for fresh and salt, and also for differences in water temperature. That said, one has to wonder whether the resistance of the denser medium wouldn't just about cancel out the tendency to float the vessel slightly higher. For most boats, the difference is probably measurable- but so slight it would only be significant to the most extreme nit pickers. Chuck, the boiled peanuts will be in the mail Monday. Found them in Richmond. Guaranteed Virginia peanuts. You better not eat for a few days and build up an appetite! i bet he pukes them all - wanna bet? :) Well, hopefully he won't open them all at once! CHUCK - if they make you puke, send the remaining ones back to me! Now, I'll bet he doesn't puke. What'll you put up against some genuine Virginia Boiled Peanuts? [NB: If I lose, I'll have some to pay off the bet with!] two pounds of restaurant quality frozen squid. [said in my best Homer Simpson voice] mmmmmmmmmmm..........calamari........ mmmmmmmmmm............bait....... Herring bait! -- 'Til next time, John H ****************************************** ***** Have a Spectacular Day! ***** ****************************************** |
Top Speed Considerations
"Shortwave Sportfishing" wrote in message ... On Sat, 28 Jan 2006 18:44:26 -0500, JohnH wrote: On Sat, 28 Jan 2006 22:49:21 GMT, Shortwave Sportfishing wrote: On Sat, 28 Jan 2006 17:04:36 -0500, JohnH wrote: On Sat, 28 Jan 2006 21:37:54 GMT, Shortwave Sportfishing wrote: On Sat, 28 Jan 2006 16:16:35 -0500, JohnH wrote: On 28 Jan 2006 10:10:24 -0800, wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper Boats do float at different heights in fresh vs. salt water. Check the plimsoll lines on tankers and container ships, for instance. They are calibrated for fresh and salt, and also for differences in water temperature. That said, one has to wonder whether the resistance of the denser medium wouldn't just about cancel out the tendency to float the vessel slightly higher. For most boats, the difference is probably measurable- but so slight it would only be significant to the most extreme nit pickers. Chuck, the boiled peanuts will be in the mail Monday. Found them in Richmond. Guaranteed Virginia peanuts. You better not eat for a few days and build up an appetite! i bet he pukes them all - wanna bet? :) Well, hopefully he won't open them all at once! CHUCK - if they make you puke, send the remaining ones back to me! Now, I'll bet he doesn't puke. What'll you put up against some genuine Virginia Boiled Peanuts? [NB: If I lose, I'll have some to pay off the bet with!] two pounds of restaurant quality frozen squid. One pound is enough. Will it stay frozen? One pound? hell, ive got 1500 pounds of it. 1,500 pounds of *restuarant quality* squid???? Hmmm. I have to call you on this one Tom. You know it can only be *restaurant quality* when first frozen (after catch) and stored at a minimum of -20F (can you store at that temperature?) for no longer than 6 months, with documentations of the date of catch and storage. This includes the time the restaurant stores it. Perhaps it may now be better qualified as bait? ;-) |
Top Speed Considerations
What an interesting thing to theorize on!
At non-planing speeds a boat MAY have a different buoyancy factor and have an almost un-measurable difference in speed. But at planning speeds buoyancy is not a factor. That's my opinion! Don Dando Skipper wrote in message ... There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper |
Top Speed Considerations
"Don Dando" wrote in message ... What an interesting thing to theorize on! At non-planing speeds a boat MAY have a different buoyancy factor and have an almost un-measurable difference in speed. But at planning speeds buoyancy is not a factor. That's my opinion! Don Dando In the real world if one has to wonder about he loss of speed or extra fuel consumption when boating in various bodies of water one either has too much idle time on their hands or cannot afford the extra nickel/gallon in fuel consumption for their boat. OMG. |
Top Speed Considerations
On Sun, 29 Jan 2006 00:19:15 GMT, Shortwave Sportfishing
wrote: On Sat, 28 Jan 2006 18:44:26 -0500, JohnH wrote: On Sat, 28 Jan 2006 22:49:21 GMT, Shortwave Sportfishing wrote: On Sat, 28 Jan 2006 17:04:36 -0500, JohnH wrote: On Sat, 28 Jan 2006 21:37:54 GMT, Shortwave Sportfishing wrote: On Sat, 28 Jan 2006 16:16:35 -0500, JohnH wrote: On 28 Jan 2006 10:10:24 -0800, wrote: Skipper wrote: There are differences in the Specific gravity of salt vs. freshwater, and Atlantic vs.Pacific waters. Wondering how this effects boat speed. Are boats faster in Pacific waters? Are boats faster in sal****er? Seems to me a boat would ride higher in sal****er and thus be faster in an equal sea state. -- Skipper Boats do float at different heights in fresh vs. salt water. Check the plimsoll lines on tankers and container ships, for instance. They are calibrated for fresh and salt, and also for differences in water temperature. That said, one has to wonder whether the resistance of the denser medium wouldn't just about cancel out the tendency to float the vessel slightly higher. For most boats, the difference is probably measurable- but so slight it would only be significant to the most extreme nit pickers. Chuck, the boiled peanuts will be in the mail Monday. Found them in Richmond. Guaranteed Virginia peanuts. You better not eat for a few days and build up an appetite! i bet he pukes them all - wanna bet? :) Well, hopefully he won't open them all at once! CHUCK - if they make you puke, send the remaining ones back to me! Now, I'll bet he doesn't puke. What'll you put up against some genuine Virginia Boiled Peanuts? [NB: If I lose, I'll have some to pay off the bet with!] two pounds of restaurant quality frozen squid. One pound is enough. Will it stay frozen? One pound? hell, ive got 1500 pounds of it. yes, it will stay frozen - its called over night in dry ice. Well, in that case, leave it at two pounds! You're gonna send a recipe, right? (And I don't want to hear, "Cut it into 1/4" wide strips about two inches long with a forked tail!" -- 'Til next time, John H ****************************************** ***** Have a Spectacular Day! ***** ****************************************** |
Top Speed Considerations
Skipper wrote: I've experienced a consistent 2 MPH delta with a planning hull at WOT from fresh to salt. That translates into a 6% difference. Even though that's been my observation, it just doesn't seem right. I'm also curious about the East/West Coast speed delta. Suspect there is one. Bet there is also a corresponding fuel penalty for displacement hulls due to this effect. Perhaps one of the boating rags will publish some data on this in the future. Would seem the mix of fresh and salt you have in your area would have had someone looking into this... -- Skipper The challenge with a real-life comparison is that it would never be possible to change only the salinity and temperature of the water. Differences in wind and current would dwarf any tiny difference between fresh and salt buoyancy. There's no way to duplicate wind and current, exactly, in any two locations even pretty nearby in Puget Sound....and there will alway be more or less wind, and typically less current, inside the locks in the fresh water. The best test for this difference would probably be conducted in a test tank at one of the boat factories, but I doubt they have any provision for filling their tanks with sal****er. |
| All times are GMT +1. The time now is 11:16 PM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 BoatBanter.com