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What do these terms mean?
M.O.R.C. self righting requirements
Hull Speed And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Thanks |
For details of the the concepts go to:
http://www.johnsboatstuff.com/Articles/design.htm and follow the links. In article , John wrote: M.O.R.C. self righting requirements Hull Speed And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Thanks |
Rich Hampel wrote:
For details of the the concepts go to: http://www.johnsboatstuff.com/Articles/design.htm and follow the links. In article , John wrote: M.O.R.C. self righting requirements Multinational Offshore Racing Committee specification as to how well a boat must right itself after being broached? Hull Speed Is that in meters? An arbitrarily defined number that reflects somewhat generally on the low speed / drag curve anomaly at what is quaintly called "hull Speed", a very important concept for those who sail commercially bearing cargo, which prompts for an investigation of hull form / drag relationships? Dunno. Will we discover other anomalies around air / transonic and water / transonic speeds and harmonic interactions thereafter? Will they matter much to us common ducks? And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Some numbers that will tell the well experienced something technical about how well the boat can dump you in the water. Don't forget to take your laptop in a freezer baggie to calculate how to trim the sails. I believe the Mariner is self bailing. That means that if you fall out of it when it dumps you into the water, if you get the sails down and turn the boat right side up, and if allowed to drain somewhat, it will bail itself out enough to sail well enough that the holes in the transom will suck out all of the water. Provided it doesn't dump you back in the water, again. It's light and tippy, if you sail it right. Daysailers are supposed to be like that. The only way to tell if you will like it is to sail one. Or am I misremembering again? It is a centerboarder? You don't give a ballast / displacement ratio. Terry K |
"Terry Spragg" wrote in message ... Rich Hampel wrote: For details of the the concepts go to: http://www.johnsboatstuff.com/Articles/design.htm and follow the links. In article , John wrote: M.O.R.C. self righting requirements Multinational Offshore Racing Committee specification as to how well a boat must right itself after being broached? Hull Speed Is that in meters? An arbitrarily defined number that reflects somewhat generally on the low speed / drag curve anomaly at what is quaintly called "hull Speed", a very important concept for those who sail commercially bearing cargo, which prompts for an investigation of hull form / drag relationships? Dunno. Will we discover other anomalies around air / transonic and water / transonic speeds and harmonic interactions thereafter? Will they matter much to us common ducks? And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Some numbers that will tell the well experienced something technical about how well the boat can dump you in the water. Don't forget to take your laptop in a freezer baggie to calculate how to trim the sails. I believe the Mariner is self bailing. That means that if you fall out of it when it dumps you into the water, if you get the sails down and turn the boat right side up, and if allowed to drain somewhat, it will bail itself out enough to sail well enough that the holes in the transom will suck out all of the water. Provided it doesn't dump you back in the water, again. It's light and tippy, if you sail it right. Daysailers are supposed to be like that. The only way to tell if you will like it is to sail one. Or am I misremembering again? It is a centerboarder? You don't give a ballast / displacement ratio. It has a 70 pound centerboard and 250 pounds of ballast; out of a total weight of 1305 pounds. I had a 16' (MFG Bandit) that did go over, and I had difficulting getting it back up. I am looking for something that is reluctant to go over and come up easily. Although tippy, would this fit the bill? Thanks. |
The Mariner is a cuddy version of the Rhodes 19. It is still being built by
Stuart Marine of Maine. They come in both centerboard and keel versions, and I thought the centerboard was quite heavy, like over 100 pounds. I've only sailed the keel version of the 19/Mariner. They aren't self bailing, but I've never come close to flipping one, even in heavy air. The Rhodes 19 has been very popular, over 4000 built, and is still raced extensively in New England. "John" wrote in message ... "Terry Spragg" wrote in message ... Rich Hampel wrote: For details of the the concepts go to: http://www.johnsboatstuff.com/Articles/design.htm and follow the links. In article , John wrote: M.O.R.C. self righting requirements Multinational Offshore Racing Committee specification as to how well a boat must right itself after being broached? Hull Speed Is that in meters? An arbitrarily defined number that reflects somewhat generally on the low speed / drag curve anomaly at what is quaintly called "hull Speed", a very important concept for those who sail commercially bearing cargo, which prompts for an investigation of hull form / drag relationships? Dunno. Will we discover other anomalies around air / transonic and water / transonic speeds and harmonic interactions thereafter? Will they matter much to us common ducks? And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Some numbers that will tell the well experienced something technical about how well the boat can dump you in the water. Don't forget to take your laptop in a freezer baggie to calculate how to trim the sails. I believe the Mariner is self bailing. That means that if you fall out of it when it dumps you into the water, if you get the sails down and turn the boat right side up, and if allowed to drain somewhat, it will bail itself out enough to sail well enough that the holes in the transom will suck out all of the water. Provided it doesn't dump you back in the water, again. It's light and tippy, if you sail it right. Daysailers are supposed to be like that. The only way to tell if you will like it is to sail one. Or am I misremembering again? It is a centerboarder? You don't give a ballast / displacement ratio. It has a 70 pound centerboard and 250 pounds of ballast; out of a total weight of 1305 pounds. I had a 16' (MFG Bandit) that did go over, and I had difficulting getting it back up. I am looking for something that is reluctant to go over and come up easily. Although tippy, would this fit the bill? Thanks. |
gabblygook, at least in the context of selling an O'Day Mariner.
M.O.R.C. self righting requirements Hull Speed And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Thanks |
good discription, Ter.
M.O.R.C. self righting requirements Multinational Offshore Racing Committee specification as to how well a boat must right itself after being broached? Hull Speed Is that in meters? An arbitrarily defined number that reflects somewhat generally on the low speed / drag curve anomaly at what is quaintly called "hull Speed", a very important concept for those who sail commercially bearing cargo, which prompts for an investigation of hull form / drag relationships? Dunno. Will we discover other anomalies around air / transonic and water / transonic speeds and harmonic interactions thereafter? Will they matter much to us common ducks? And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Some numbers that will tell the well experienced something technical about how well the boat can dump you in the water. Don't forget to take your laptop in a freezer baggie to calculate how to trim the sails. I believe the Mariner is self bailing. That means that if you fall out of it when it dumps you into the water, if you get the sails down and turn the boat right side up, and if allowed to drain somewhat, it will bail itself out enough to sail well enough that the holes in the transom will suck out all of the water. Provided it doesn't dump you back in the water, again. It's light and tippy, if you sail it right. Daysailers are supposed to be like that. The only way to tell if you will like it is to sail one. Or am I misremembering again? It is a centerboarder? You don't give a ballast / displacement ratio. Terry K |
In article , "John"
wrote: M.O.R.C. self righting requirements Hull Speed And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. FUN boat! Enjoy! -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
JAXAshby wrote:
good discription, Ter. Gee, A KUDO! Thanks, As! First I remember in this forum, but considering the source, sir, you do me no reliably benificial or [-----------------------------------------------------^ sp -tk] reputable favour, but instead, shake my confidence (a prodigous accomplishment). Now I must review my response to see what apparently adopted misconceptions I may have fostered. -TK ;-) M.O.R.C. self righting requirements Multinational Offshore Racing Committee specification as to how well a boat must right itself after being broached? Hull Speed Is that in meters? An arbitrarily defined number that reflects somewhat generally on the low speed / drag curve anomaly at what is quaintly called "hull Speed", a very important concept for those who sail commercially bearing cargo, which prompts for an investigation of hull form / drag relationships? Dunno. Will we discover other anomalies around air / transonic and water / transonic speeds and harmonic interactions thereafter? Will they matter much to us common ducks? And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Some numbers that will tell the well experienced something technical about how well the boat can dump you in the water. Don't forget to take your laptop in a freezer baggie to calculate how to trim the sails. I believe the Mariner is self bailing. That means that if you fall out of it when it dumps you into the water, if you get the sails down and turn the boat right side up, and if allowed to drain somewhat, it will bail itself out enough to sail well enough that the holes in the transom will suck out all of the water. Provided it doesn't dump you back in the water, again. It's light and tippy, if you sail it right. Daysailers are supposed to be like that. The only way to tell if you will like it is to sail one. Or am I misremembering again? It is a centerboarder? You don't give a ballast / displacement ratio. Terry K |
John wrote:
"Terry Spragg" wrote in message ... Rich Hampel wrote: For details of the the concepts go to: http://www.johnsboatstuff.com/Articles/design.htm and follow the links. In article , John wrote: M.O.R.C. self righting requirements Multinational Offshore Racing Committee specification as to how well a boat must right itself after being broached? Hull Speed Is that in meters? An arbitrarily defined number that reflects somewhat generally on the low speed / drag curve anomaly at what is quaintly called "hull Speed", a very important concept for those who sail commercially bearing cargo, which prompts for an investigation of hull form / drag relationships? Dunno. Will we discover other anomalies around air / transonic and water / transonic speeds and harmonic interactions thereafter? Will they matter much to us common ducks? And, for a 19' sailboat, what do you make of the following? Disp./Length 104 Sail Area/Disp 24.8 Length/Beam 2.53 Specifically, it is an ODay Mariner. Some numbers that will tell the well experienced something technical about how well the boat can dump you in the water. Don't forget to take your laptop in a freezer baggie to calculate how to trim the sails. I believe the Mariner is self bailing. That means that if you fall out of it when it dumps you into the water, if you get the sails down and turn the boat right side up, and if allowed to drain somewhat, it will bail itself out enough to sail well enough that the holes in the transom will suck out all of the water. Provided it doesn't dump you back in the water, again. It's light and tippy, if you sail it right. Daysailers are supposed to be like that. The only way to tell if you will like it is to sail one. Or am I misremembering again? It is a centerboarder? You don't give a ballast / displacement ratio. It has a 70 pound centerboard and 250 pounds of ballast; out of a total weight of 1305 pounds. I had a 16' (MFG Bandit) that did go over, and I had difficulting getting it back up. I unintentionally upset and then righted a 13 footer, forget the class, at age 55 I think, last time, a while ago. It was at first difficult, because I though I could do it with the sail still up. Doesn't always go well, that. But, do it right (egad!) with the sail lowered, over a stern quarter, and it is an enjoyable exercise on a hot day, if you like watersports. Sailing a dinghy is by definition, a barefoot water sport, and to qualify on any such sailing course, you must be practiced and confident in the method. 'Taint hard. You must pull down the sail before attempting the recovery, or learn to sail better;-) Shortening sail before dumping in increasing winds means you won't as likely need to douse it, wet and then re-hoist it, reefed. Can you reef the sail on your boat? Some think that wild days, full sails and free baths are the pithy point of dinghy sailing. A 16 footer is more fun with two aboard, and is likely easier to right, with teamwork. You do rig a short rope bridle for a foot hold during reboarding, don't you? A loose jib sheet, pulled snug through it's fairlead and handed at the gunnel, serves conveniently for a leg up, as would a dedicated line kept rigged in the boat for eventual use, or even the mainsheet. There are tricks in every trade. A sailing dinghy is expected to capsize occasionally, and be righted. A 20 footer can be made to do so, as can any sailboat in sufficiently demented hands. 20 footers, and most fixed keelboats, can sink when dumped, especially if the companionway boards are removed. Any boat stable enough to never capsize..., no, wait a minute, can't be done reliably, and wouldn't sail well, anyway, as it must be set into a concrete berth ashore. Get a self bailer, unsinkable, if you worry about such things. Yours is likely so now, as you seem to have survived it. You will be more comfortable knowing how to not dump it, and knowing it is survivable, even enjoyable, if you are set up for it, and fit. It impresses the girls no end! Just remember to tie the beer cooler on a tether to the boat. Terry K I am looking for something that is reluctant to go over and come up easily. Although tippy, would this fit the bill? Thanks. |
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