Trickypig 86 #201 Posted March 14, 2013 Fugs: Great find. Lovely boat. Very similar to the SLIVER project. Too bad the cabin trunk is so long. But it does buy headroom forward. My taste woud be for a flatter sheer to take some of the Banana look out of the boat. That photo from the starboard aft quarter shows how just a few degrees of heel can exagerate the sheer spring. But like the owner says, it may not be perfection buit it's close. I agree. Does that one photo from the aft quarter distort the amount of sheer apparent? It's interesting how she has less overhang like Sliver's lines. Her bow is quite different and without wanting to `piss in your pocket' I prefer Sliver's bow. This boat is for high up on the cool board. You're about as tall and grumpy as Jeremy Clarkson, so can you put it there? Share this post Link to post Share on other sites
Sailbydate 574 #202 Posted March 14, 2013 BACCANT was the inspiration for Infidel, which became Ragtime, which inspired the West Coast sleds. So there's a link between these square meter boats and SC70s. Maybe Fidelis came in there somewhere. I believe she came before Infidel, but I may have it backwards. Fidelis was in Hobart for the AWBF recently, looking pretty fast, especially for a 'leaner'. .http://www.asqma.com...es/Fidelis.html She's a lovely boat. She used to be a gun boat on the Waitemata (Auckland, New Zealand) for many years. I sailed once on another A Class, the 'Ranger' as a kid in the Auckland Anniversary Regatta one year. Another great battle in the old A Class fleet. Great memories. Share this post Link to post Share on other sites
Trickypig 86 #203 Posted March 14, 2013 Shields. Olin Stephens design from the early 60s. The most beautiful boat on the planet, IMHO. Stunning. The photos of the bows looks like the Soling took its bow straight off the Shield's lines. Share this post Link to post Share on other sites
Bob Perry 448 #204 Posted March 14, 2013 Well,,,not really. Not "apparent". The sheer spring MUST be a fucntion of the distance the sheer travels. In other words (I sure as hell can't think of the right ones) imagine taking a very long tape measure, putting one end on the bow and then running the tape right alonf the top of the cap rail all the way to the stern. I call this the "distance the sheer travels". Now do this measurement on the SLIVER project. Then do it on another 62'er but one with normal beam say 17.5' of beam. Your sheer "length" of SLIVER will be far less than that of the beamier boat. The more distance the sher travels the more spring it needs. Skinny boats do not need much sheer spring. They end up looking exagerated. A beamy boat with minimal sheer will appear to have a flat sheer. The same rule applies to a given sheerline and how the spring should be distributed. But I'll save that for later. I'm hungry. Share this post Link to post Share on other sites
Trickypig 86 #205 Posted March 14, 2013 Well,,,not really. Not "apparent". The sheer spring MUST be a fucntion of the distance the sheer travels. In other words (I sure as hell can't think of the right ones) imagine taking a very long tape measure, putting one end on the bow and then running the tape right alonf the top of the cap rail all the way to the stern. I call this the "distance the sheer travels". Now do this measurement on the SLIVER project. Then do it on another 62'er but one with normal beam say 17.5' of beam. Your sheer "length" of SLIVER will be far less than that of the beamier boat. The more distance the sher travels the more spring it needs. Skinny boats do not need much sheer spring. They end up looking exagerated. A beamy boat with minimal sheer will appear to have a flat sheer. The same rule applies to a given sheerline and how the spring should be distributed. But I'll save that for later. I'm hungry. Always learning from you Bob, thanks for that explanation. Share this post Link to post Share on other sites
kimbottles 284 #206 Posted March 14, 2013 I'd been meaning to post pictures of this under the general cool boat thread, but the invasion of the thread by Scandinavian style boats has prompted me to go questing for photos from the owner's website. She may be the coolest boat I know in my neck of the woods (or at least the coolest new build): she's a really outrageous 70 foot take on a Tumlare, designed and built by her owner, who seems to be one of those people who can do a million things before lunch - start a corporation, have a family, design and build a boat . . . Anyway, a boat that conforms to nothing at all, just wants to go faster and look better. Makes the Spirit boats (to whom she's a neighbour) look like conformist consumer items. She's been for sale for a while, but you can just imagine the equation that the average boat buyer makes between berthing fees, accommodation etc. http://www.keme.net/...ine/WEB1/madam/ If I didn't have the second coolest new build wooden boat on the East Coast . . . E I tried to follow up on this vessel a couple of years ago. Saw her listed on an European Broker's website. She was very close to what I thought I wanted and one of the vessels I really wanted to check out. Never got an answer to my several inquiries. So I gave up trying and instead went to Bob and started the Sliver project. Share this post Link to post Share on other sites
kimbottles 284 #207 Posted March 14, 2013 Well,,,not really. Not "apparent". The sheer spring MUST be a fucntion of the distance the sheer travels. In other words (I sure as hell can't think of the right ones) imagine taking a very long tape measure, putting one end on the bow and then running the tape right alonf the top of the cap rail all the way to the stern. I call this the "distance the sheer travels". Now do this measurement on the SLIVER project. Then do it on another 62'er but one with normal beam say 17.5' of beam. Your sheer "length" of SLIVER will be far less than that of the beamier boat. The more distance the sher travels the more spring it needs. Skinny boats do not need much sheer spring. They end up looking exagerated. A beamy boat with minimal sheer will appear to have a flat sheer. The same rule applies to a given sheerline and how the spring should be distributed. But I'll save that for later. I'm hungry. Always learning from you Bob, thanks for that explanation. +1 Share this post Link to post Share on other sites
tad 0 #208 Posted March 14, 2013 BACCANT was the inspiration for Infidel, which became Ragtime, which inspired the West Coast sleds. So there's a link between these square meter boats and SC70s. Maybe Fidelis came in there somewhere. I believe she came before Infidel, but I may have it backwards. Fidelis was in Hobart for the AWBF recently, looking pretty fast, especially for a 'leaner'. .http://www.asqma.com...es/Fidelis.html The 1936 Reimers design Bacchante was written about by Uffa Fox and her lines were published in Yachting Monthly. Those Lines became the basis of the 1938 boat Ranger which dominated local racing in Auckland for the next 30 years. In 1962 Vic Speight (also of Auckland) visited Newport(for the Americas Cup) and saw Bacchante....He asked Reimers for her lines and was told the cost would be 10,000 pounds sterling.....the cost of three houses in Auckland at the time. So he had Fidelis built from those same Uffa Fox drawings published in Sail and Power. Infidel is completely different and bears no relation to the 75 sq metre except perhaps her length overall is close.....She's vee-bottomed, lighter, wider, deeper, carries more sail, and is a modern boat with separate spade rudder..... Share this post Link to post Share on other sites
kimbottles 284 #209 Posted March 14, 2013 BACCANT was the inspiration for Infidel, which became Ragtime, which inspired the West Coast sleds. So there's a link between these square meter boats and SC70s. Maybe Fidelis came in there somewhere. I believe she came before Infidel, but I may have it backwards. Fidelis was in Hobart for the AWBF recently, looking pretty fast, especially for a 'leaner'. .http://www.asqma.com...es/Fidelis.html The 1936 Reimers design Bacchante was written about by Uffa Fox and her lines were published in Yachting Monthly. Those Lines became the basis of the 1938 boat Ranger which dominated local racing in Auckland for the next 30 years. In 1962 Vic Speight (also of Auckland) visited Newport(for the Americas Cup) and saw Bacchante....He asked Reimers for her lines and was told the cost would be 10,000 pounds sterling.....the cost of three houses in Auckland at the time. So he had Fidelis built from those same Uffa Fox drawings published in Sail and Power. Infidel is completely different and bears no relation to the 75 sq metre except perhaps her length overall is close.....She's vee-bottomed, lighter, wider, deeper, carries more sail, and is a modern boat with separate spade rudder..... Thanks Tad, you saved me from having to say Infidel (Ragtime) is in no way a Square Metre boat design or a Reimers design (and I am sure Spencer would not be pleased with that error in identification.). Very cool boat none the less! Share this post Link to post Share on other sites
Contumacious Tom 671 #210 Posted March 15, 2013 Well,,,not really. Not "apparent". The sheer spring MUST be a fucntion of the distance the sheer travels. In other words (I sure as hell can't think of the right ones) imagine taking a very long tape measure, putting one end on the bow and then running the tape right alonf the top of the cap rail all the way to the stern. I call this the "distance the sheer travels". Now do this measurement on the SLIVER project. Then do it on another 62'er but one with normal beam say 17.5' of beam. Your sheer "length" of SLIVER will be far less than that of the beamier boat. The more distance the sher travels the more spring it needs. Skinny boats do not need much sheer spring. They end up looking exagerated. A beamy boat with minimal sheer will appear to have a flat sheer. The same rule applies to a given sheerline and how the spring should be distributed. But I'll save that for later. I'm hungry. Always learning from you Bob, thanks for that explanation. +1 If he keeps it up, I may one day learn what these fancy designer terms mean. Share this post Link to post Share on other sites
Bob Perry 448 #211 Posted March 15, 2013 Tom: You mean terms like "skinny"? Share this post Link to post Share on other sites
valcour 5 #212 Posted March 15, 2013 BACCANT was the inspiration for Infidel, which became Ragtime, which inspired the West Coast sleds. So there's a link between these square meter boats and SC70s. Maybe Fidelis came in there somewhere. I believe she came before Infidel, but I may have it backwards. Fidelis was in Hobart for the AWBF recently, looking pretty fast, especially for a 'leaner'. .http://www.asqma.com...es/Fidelis.html The 1936 Reimers design Bacchante was written about by Uffa Fox and her lines were published in Yachting Monthly. Those Lines became the basis of the 1938 boat Ranger which dominated local racing in Auckland for the next 30 years. In 1962 Vic Speight (also of Auckland) visited Newport(for the Americas Cup) and saw Bacchante....He asked Reimers for her lines and was told the cost would be 10,000 pounds sterling.....the cost of three houses in Auckland at the time. So he had Fidelis built from those same Uffa Fox drawings published in Sail and Power. Infidel is completely different and bears no relation to the 75 sq metre except perhaps her length overall is close.....She's vee-bottomed, lighter, wider, deeper, carries more sail, and is a modern boat with separate spade rudder..... I stand corrected. I confused the story. It was Ranger that was derived from BACCANT. Sorry about the goof, and thanks for setting the record straight. Charlie Share this post Link to post Share on other sites
Sailbydate 574 #213 Posted March 15, 2013 This yacht was a real design game changer. Newspaper Taxis was an IOR Half Tonner, designed by Paul Whiting in '76 I think. The first yacht I ever saw with a distorted hull shape to fit the IOR rule measuring points. A light displacement flyer, she was truly radical in her time - with a centre board and her fractional rig. This is a very Coolboat IMO. Share this post Link to post Share on other sites
olaf hart 213 #214 Posted March 16, 2013 She looks more like a quarter tonner in that pic. Share this post Link to post Share on other sites
Contumacious Tom 671 #215 Posted March 16, 2013 Tom: You mean terms like "skinny"? I was thinking more of sheer spring, but that's not alone among common designer terms that you use and I don't understand. As I've said before, I'm a consumer of boats and know virtually nothing about design other than what I like to use. I really don't even know the simplest terms in the language of your trade. It makes some of the design discussions a bit hard to follow, but I am figuring out some of them from context. The more I learn, the more I realize I don't know, and the more glad I am that there are people out there to design boats for me to use. Share this post Link to post Share on other sites
Bob Perry 448 #216 Posted March 16, 2013 Tom: Maybe some time we need to start a thread where people submit terms they need an explanation for and we can all muck in on the explanations. Probably get some good debates going. Sheer spring is the term I use to describe just how much vertical "bend" there is in the sheer. A boat with a straight sheer has zero spring. Share this post Link to post Share on other sites
Sailbydate 574 #217 Posted March 16, 2013 Tom: Maybe some time we need to start a thread where people submit terms they need an explanation for and we can all muck in on the explanations. Probably get some good debates going. Sheer spring is the term I use to describe just how much vertical "bend" there is in the sheer. A boat with a straight sheer has zero spring. Great idea, Bob. A sort of Boatpedia. I like it. Share this post Link to post Share on other sites
Sailbydate 574 #218 Posted March 17, 2013 She looks more like a quarter tonner in that pic. Yes, she does. She was (is?) pretty much a bigger version of Paul's quarter tonner, Magic Bus. Share this post Link to post Share on other sites
Contumacious Tom 671 #219 Posted March 17, 2013 Tom: Maybe some time we need to start a thread where people submit terms they need an explanation for and we can all muck in on the explanations. Probably get some good debates going. Sheer spring is the term I use to describe just how much vertical "bend" there is in the sheer. A boat with a straight sheer has zero spring. Maybe I'll start one when I get home. I'm on the boat in Pelican Bay right now and running out of battery. Share this post Link to post Share on other sites
py26129 32 #220 Posted March 17, 2013 Here is a very cool boat: Walter Grene. She is a modern take on a Herreshoff desin called Arion. Arion herself was a very early fiberglass boat, Walter Greene is cold molded. Overall length: 42' Beam 8'1" Wooden Boat did an article on both boats a few years ago and I have not stopped drooling. http://www.mattsmith...ltergreene.html Looks to be for sale: http://www.boattrade...shoff-101817218 Sail Plan: 1017-307.pdf Share this post Link to post Share on other sites
Sailbydate 574 #221 Posted March 17, 2013 Tom: Maybe some time we need to start a thread where people submit terms they need an explanation for and we can all muck in on the explanations. Probably get some good debates going. Sheer spring is the term I use to describe just how much vertical "bend" there is in the sheer. A boat with a straight sheer has zero spring. Maybe I'll start one when I get home. I'm on the boat in Pelican Bay right now and running out of battery. Good one, Tom. It will probably take more computer skills than I can muster. I've been thinking about a simple format to get it started, over the weekend. Maybe a simple alpha index for the query, as in Sheer Spring (thanks for that one, Bob) and then - blogger contributions underneath? Share this post Link to post Share on other sites
SemiSalt 69 #222 Posted March 17, 2013 Great idea, Bob. A sort of Boatpedia. I like it. There was a time that most boat reviews (in Yachting) said the boat had a clean run. I never knew quite what that meant, and no boat was ever tagged as having a dirty run for comparison. I'm pretty sure, though, that the Ranger 26 has a clean run. If fact, I think Gary Mull was the king of clean run designers. But I still don't know what they were trying to say. I also never understood when it was written that a boat had a powerful mid-section. Share this post Link to post Share on other sites
Sailbydate 574 #223 Posted March 17, 2013 Here is a very cool boat: Walter Grene. She is a modern take on a Herreshoff desin called Arion. Arion herself was a very early fiberglass boat, Walter Greene is cold molded. Overall length: 42' Beam 8'1" Wooden Boat did an article on both boats a few years ago and I have not stopped drooling. http://www.mattsmith...ltergreene.html Looks to be for sale: http://www.boattrade...shoff-101817218 Sail Plan: 1017-307.pdf She's a nice boat. Some additional drawings on the designer's web site I see. She's simple but elegant. Share this post Link to post Share on other sites
Bob Perry 448 #224 Posted March 17, 2013 Semi: "clean run" refers to straight buttocks aft. This requires a minimum of shape change in the final section of the boat to keep the buttocks raunning straight and almost parallel. Maybe "lacvk of rocker aft" would be another way to put it. "Powerful mid section" refers to a firm turn to the bilge for good initial stability as opposed to a boat with high deadrise and slack bilges. Share this post Link to post Share on other sites
Sailbydate 574 #225 Posted March 17, 2013 Semi: "clean run" refers to straight buttocks aft. This requires a minimum of shape change in the final section of the boat to keep the buttocks raunning straight and almost parallel. Flat and close to parallel to water line, as opposed to curved upwards. Maybe "lacvk of rocker aft" would be another way to put it. Yes. Good. "Powerful mid section" refers to a firm turn to the bilge for good initial stability as opposed to a boat with high deadrise and slack bilges. A couple of pics to illustrate flat run vs rockered. Boats aren't of equal length but they illustrate the point, hopefully. Some boat buttocks are so curved they incorporate a bustle, usually around a rudder skeg. Share this post Link to post Share on other sites
SemiSalt 69 #226 Posted March 17, 2013 "Powerful mid section" refers to a firm turn to the bilge for good initial stability as opposed to a boat with high deadrise and slack bilges. That's what I would have thought, but.... Here's an example from Roger Taylor. You're not responsible for what he wrote, so you don't have to explain. Perhaps he was just flat wrong, but you can see why I get confused. (I get confused easily.) Sensible Cruising Designs (LFH), page 341 The lines of the vessel in question: page 343 For those following the narrow boat question, note that this vessel has an L/B of about 4. I think the stern is a little unusual, coming to a narrow transom with an outboard rudder. Share this post Link to post Share on other sites
Bob Perry 448 #227 Posted March 18, 2013 Semi: Don't apoligize. He was right, in context. And if you read it again he says something like, "as powerful a midesction as LFH ever drew". It's all relative. Sailby: No, I don't think you can lump in a bustle with rocker. A bustle exists outside of the canoe body or "fairbody" line. To appreciate/evaluate rocker I think you have to visually, fair through the bustle. Think of it like this, if you will: You could have a very flat run i.e. minimal rocker, and still put a bustle on the boat. I am not trying to pontificate. I am just trying to accurately pass along what I have been trying to learn for the last 52 years. I have been trying very hard. All the time. Share this post Link to post Share on other sites
Sailbydate 574 #228 Posted March 18, 2013 "Powerful mid section" refers to a firm turn to the bilge for good initial stability as opposed to a boat with high deadrise and slack bilges. That's what I would have thought, but.... Here's an example from Roger Taylor. You're not responsible for what he wrote, so you don't have to explain. Perhaps he was just flat wrong, but you can see why I get confused. (I get confused easily.) Sensible Cruising Designs (LFH), page 341 The lines of the vessel in question: page 343 For those following the narrow boat question, note that this vessel has an L/B of about 4. I think the stern is a little unusual, coming to a narrow transom with an outboard rudder. Looking at her lines, 'SemiSalt', I can't see anything at odds with Bob's description of 'powerful mid-sections'. Below is lines of a yacht with much slacker mid-sections, as a comparison. Share this post Link to post Share on other sites
Sailbydate 574 #229 Posted March 18, 2013 Semi: Don't apoligize. He was right, in context. And if you read it again he says something like, "as powerful a midesction as LFH ever drew". It's all relative. Sailby: No, I don't think you can lump in a bustle with rocker. A bustle exists outside of the canoe body or "fairbody" line. To appreciate/evaluate rocker I think you have to visually, fair through the bustle. Think of it like this, if you will: You could have a very flat run i.e. minimal rocker, and still put a bustle on the boat. I am not trying to pontificate. I am just trying to accurately pass along what I have been trying to learn for the last 52 years. I have been trying very hard. All the time. Thanks, Bob. No argument from me. You're a practitioner. I'm a casual observer. So why, I wonder, would you add a bustle to a flat run? I understood a flat run would help to maximise hull plane effect. Share this post Link to post Share on other sites
SemiSalt 69 #230 Posted March 18, 2013 I guess I was looking at the deadrise rather than the turn of the bilge. I see the deep displaced volume along the centerline and think it could be redrawn to give a lot more form stability. Share this post Link to post Share on other sites
Ishmael 1,747 #231 Posted March 18, 2013 Semi: Don't apoligize. He was right, in context. And if you read it again he says something like, "as powerful a midesction as LFH ever drew". It's all relative. Sailby: No, I don't think you can lump in a bustle with rocker. A bustle exists outside of the canoe body or "fairbody" line. To appreciate/evaluate rocker I think you have to visually, fair through the bustle. Think of it like this, if you will: You could have a very flat run i.e. minimal rocker, and still put a bustle on the boat. I am not trying to pontificate. I am just trying to accurately pass along what I have been trying to learn for the last 52 years. I have been trying very hard. All the time. Thanks, Bob. No argument from me. You're a practitioner. I'm a casual observer. So why, I wonder, would you add a bustle to a flat run? I understood a flat run would help to maximise hull plane effect. I think the bustle was to make the measurement points for IOR, and to really fuck up half-model builders. I look at this and wonder how the hell I'm going to carve that at 1/2"=1'. It really is quite a contorted shape when you look at it. Share this post Link to post Share on other sites
Bob Perry 448 #232 Posted March 18, 2013 Sailby: I just finished dinner and I have had some wine so I may not be up to giving you a really concise desription of eactly what a bustle is. But if you can read thru my awful typing I'll try. The bustle was a rule artifact. Period. If the rule was a girth based rule like the RORC and the IOR and the meter boat rume ( it wasn't called that. I think it was the International Rule or the Universal Rule but we know it now as the "meter boat rule, 5.5m, 6m. 8m, 10m and 12m's.) But they were girth based rules and as such they tried to make you squeze the volume aft to minimize girth. One way around this, given the way girth was measured ( another whole chapter) was to bump out a bustle. The reason you wanted to do this was to INCREASE THE PRISMATIC COEFICIENT. The effort was to push or add volume aft. Adding volume aft theoreticaly increased the sailing length. Working with the America's Cup 12m's the designers ahd to deal with a midsghips girth penalty that forced them to make the midsection really full. But that meade the ends really fine, for a given displacement. So the "secret" was to add a bustle that would force volume aft. But without a rule the bustle made absolutely no sense. But it took us years to figure this out. Does that make sense? I though not. Oh well, that's the best you are going to get tonight. Share this post Link to post Share on other sites
Mung Breath 0 #233 Posted March 18, 2013 Shields. Olin Stephens design from the early 60s. The most beautiful boat on the planet, IMHO. I'm surprised no one else picked up on this nomination. Agreed! The Shields (like the IOD) is a great boat. I owned hull #54 which. like the #53 pictured, was built by Chris Craft and had a reputation for being 'light'. I loved the boat and wish I hadn't sold it. Another boat I saw but was too late to return to the States to buy fast enough was called BIJOU, I believe, A modern 40' meter boat built in Scandina (might have been Germany, come to think of it) of fiberglass and mahagony that was listed in Annapolis in 1999. Ahhh, the ones tat get away! Share this post Link to post Share on other sites
Mung Breath 0 #234 Posted March 18, 2013 BTW Bob, once again, I open a thread and find myself on the edge of my seat, learning from you. If I haven't thanked you for that generosity lately, kick me. Share this post Link to post Share on other sites
Bob Perry 448 #235 Posted March 18, 2013 Thanks Mung. I muck in when I can. For the record, I think the Shields is kind of a silly boat. No waterline. Pretty but not efficient at all. Why would anyone want the rudder there? Share this post Link to post Share on other sites
kimbottles 284 #236 Posted March 18, 2013 Shields. Olin Stephens design from the early 60s. The most beautiful boat on the planet, IMHO. I'm surprised no one else picked up on this nomination. Agreed! The Shields (like the IOD) is a great boat. I owned hull #54 which. like the #53 pictured, was built by Chris Craft and had a reputation for being 'light'. I loved the boat and wish I hadn't sold it. Another boat I saw but was too late to return to the States to buy fast enough was called BIJOU, I believe, A modern 40' meter boat built in Scandina (might have been Germany, come to think of it) of fiberglass and mahagony that was listed in Annapolis in 1999. Ahhh, the ones tat get away! Bijou II ( the original design by Knud Reimers) is traditionally built wood and now located here on Bainbridge Island and belongs to our good friends Russ and Tina. She was built by Beck & Sohne in Germany in about 1972. The later Bijou's were also built by Beck & Sohne and they seem to have built 40+ of them to the same design over the years in several different configurations and in both cold molded wood and fiberglass versions. Our's was a 1995 built "composite" version which to Beck & Sohne was fiberglass hull with teak deck. Some of the Germany 30 owners of more traditional boats claim the later boats were built too light (hence faster) and there was a split in the Germany 30 fleet with the newer boats dubbed "table B boats". I don't know all of the details, but I understand our 30 was a "table B boat". The Swedish fleet measuring guy told me if I brought my 30 to Sweden I would be allowed to race with the standard 30 fleet. (It was easier to simply charter a local 30 when we raced in the 100 year anniversary races in 2008 in Sandhamn.) Great boats, I would still have mine if the Sliver project didn't exist. But I only have so much room at my dock. Share this post Link to post Share on other sites
Sailbydate 574 #237 Posted March 18, 2013 Sailby: I just finished dinner and I have had some wine so I may not be up to giving you a really concise desription of eactly what a bustle is. But if you can read thru my awful typing I'll try. The bustle was a rule artifact. Period. If the rule was a girth based rule like the RORC and the IOR and the meter boat rume ( it wasn't called that. I think it was the International Rule or the Universal Rule but we know it now as the "meter boat rule, 5.5m, 6m. 8m, 10m and 12m's.) But they were girth based rules and as such they tried to make you squeze the volume aft to minimize girth. One way around this, given the way girth was measured ( another whole chapter) was to bump out a bustle. The reason you wanted to do this was to INCREASE THE PRISMATIC COEFICIENT. The effort was to push or add volume aft. Adding volume aft theoreticaly increased the sailing length. Working with the America's Cup 12m's the designers ahd to deal with a midsghips girth penalty that forced them to make the midsection really full. But that meade the ends really fine, for a given displacement. So the "secret" was to add a bustle that would force volume aft. But without a rule the bustle made absolutely no sense. But it took us years to figure this out. Does that make sense? I though not. Oh well, that's the best you are going to get tonight. Thanks, Bob. That's helpful. Share this post Link to post Share on other sites
Contumacious Tom 671 #238 Posted March 18, 2013 Can we get back to cool boats? Here are a couple of the coolest kind of boats: ones the owners are out enjoying. One sails a bit better than the other. It also motors quite a bit better, but what can you do? Share this post Link to post Share on other sites
sailglobal 1 #239 Posted March 18, 2013 Thanks Tom, the blue boat looks like my kinda day sailer. Dencho built a 20 odd footer recently which looked a bit like her, quite an appealing size, especially when Van Diemen is about to get her topsides done!!!!!!!!!!! Share this post Link to post Share on other sites
Bob Perry 448 #240 Posted March 18, 2013 Global: That was my little gaffer for the doctor in New Orleans. Share this post Link to post Share on other sites
Contumacious Tom 671 #241 Posted March 18, 2013 Thanks Tom, the blue boat looks like my kinda day sailer. Dencho built a 20 odd footer recently which looked a bit like her, quite an appealing size, especially when Van Diemen is about to get her topsides done!!!!!!!!!!! That's our 17' Com-Pac Sun Cat. After several years of ownership, my wife finally agreed to an overnight onboard. She found it cramped and was annoyed by the need to move everything to get to anything. Back to daysailing for our boat! Share this post Link to post Share on other sites
Veeger 111 #242 Posted March 18, 2013 Global: That was my little gaffer for the doctor in New Orleans. I've seen that pic before but there really hasn't been much published about it either on the net or in print. I suppose there's lots of good boats that get designed, built and enjoyed that we never see or hear much about. All the same, it'd be nice to see more info about this one. Did it come out of what started in that 'Target Market" thread? Share this post Link to post Share on other sites
Bob Perry 448 #243 Posted March 18, 2013 Veegs: No, the 20' gaffer came from a consultation client who after looking at many boats that just didn't hit the mark, just asked me, "Could you design one for me?" And off we went. Share this post Link to post Share on other sites
miloman 0 #244 Posted March 18, 2013 Are designs that haven't been built kosher? Since there's been a bunch of long skinny boat, and double enders... I've been drooling over this un-built Garden design. Share this post Link to post Share on other sites
Bob Perry 448 #245 Posted March 18, 2013 Good find Milo. Not sure I have seen that one before. Share this post Link to post Share on other sites
Veeger 111 #246 Posted March 18, 2013 She's got about 15' too much overhang but I could dream about something like that.... (oh, wait, I have and I do) Share this post Link to post Share on other sites
sailglobal 1 #247 Posted March 18, 2013 Bob, did 'Choater-the-boater" make a plug or was she a one off? I missed seeing her being built. Looks promising,,,,,, Share this post Link to post Share on other sites
Black Jack 24 #248 Posted March 18, 2013 Sailed by this beautiful driftwood yesterday - equal parts Stratovarius & salty cruiser. Very elegant boat. An ideal many would consider perfect. Share this post Link to post Share on other sites
Trickypig 86 #249 Posted March 18, 2013 Can we get back to cool boats? Here are a couple of the coolest kind of boats: ones the owners are out enjoying. One sails a bit better than the other. It also motors quite a bit better, but what can you do? Bugger off, Tom. I'm not biting. Cool boat in the foreground.. that's all I'm saying. Share this post Link to post Share on other sites
Trickypig 86 #250 Posted March 18, 2013 Global: That was my little gaffer for the doctor in New Orleans. Ok Bob, I know ya going to dock me a glass or two of scotch but the builder shouldna done the coaming that way (I'd tell the builder myself) . She is still very much on the cool board though..... It'll be my boat in 20 years. Share this post Link to post Share on other sites
Bob Perry 448 #251 Posted March 18, 2013 Tricky: I agree with you totally. Plans ? What plans? I don't need no stinkin' plans. Share this post Link to post Share on other sites
Sailbydate 574 #252 Posted March 18, 2013 Sailed by this beautiful driftwood yesterday - equal parts Stratovarius & salty cruiser. Very elegant boat. An ideal many would consider perfect. Very nearly perfect. Sweet. Share this post Link to post Share on other sites
Sailbydate 574 #253 Posted March 18, 2013 Global: That was my little gaffer for the doctor in New Orleans. Pretty little boat, Bob. I like the cuddy and cockpit coaming (even if it wasn't drawn that way). Have you a sail plan image to share? Share this post Link to post Share on other sites
Contumacious Tom 671 #254 Posted March 18, 2013 Can we get back to cool boats? Here are a couple of the coolest kind of boats: ones the owners are out enjoying. One sails a bit better than the other. It also motors quite a bit better, but what can you do? Bugger off, Tom. I'm not biting. Cool boat in the foreground.. that's all I'm saying. I'm thinking the family of four staying on that other one thought it cooler for the purpose than a boat with only two bunks. Share this post Link to post Share on other sites
Contumacious Tom 671 #255 Posted March 19, 2013 Egret is another cool boat. Hey, I can't help it if yet another undesirable (or two, if you count the one on the far right) shows up in the background of my picture. People use their boats. I think that's cool too. Share this post Link to post Share on other sites
Bob Perry 448 #256 Posted March 19, 2013 Globs: Here you go. Maybe someone can make a pretty jpeg ouit of this. I'm off to Tai Chi so I can push old ladies around. Dr. Rob rig Carbon dets.G.pdf Share this post Link to post Share on other sites
Contumacious Tom 671 #257 Posted March 19, 2013 In image form: I like everything about it except the draft. Really like the large cockpit. I'd make Bob design it with a centerboard or daggerboard, which would totally screw up that little cabin. But at least I could back it onto the beach like other cool boats. Share this post Link to post Share on other sites
Sailbydate 574 #258 Posted March 19, 2013 In image form: I like everything about it except the draft. Really like the large cockpit. I'd make Bob design it with a centerboard or daggerboard, which would totally screw up that little cabin. But at least I could back it onto the beach like other cool boats. She's cute, alright. Maybe leave out the lazarette (or is it a watertight compartment) too? Share this post Link to post Share on other sites
Veeger 111 #259 Posted March 19, 2013 In image form: I like everything about it except the draft. Really like the large cockpit. I'd make Bob design it with a centerboard or daggerboard, which would totally screw up that little cabin. But at least I could back it onto the beach like other cool boats. She's cute, alright. Maybe leave out the lazarette (or is it a watertight compartment) too? Thanks, Bob! She's got lots of good stuff going on, bet she's a blast to sail! Share this post Link to post Share on other sites
kimbottles 284 #260 Posted March 19, 2013 Egret is another cool boat. Hey, I can't help it if yet another undesirable (or two, if you count the one on the far right) shows up in the background of my picture. People use their boats. I think that's cool too. Tom, I really like that little schooner! Thanks for sharing. Share this post Link to post Share on other sites
dolphinmaster 6 #261 Posted March 19, 2013 Globs: Here you go. Maybe someone can make a pretty jpeg ouit of this. I'm off to Tai Chi so I can push old ladies around. Old lady pushing skills are critical when they start swinging those iron tipped umbrellas at your cranium. Keep your tai chi balance and push'em just enough to unbalance them and grab the umbrella and them at the same time and teeter em back to center and then open the damn thing for em. They calm right down after that. Share this post Link to post Share on other sites
Brodie 0 #262 Posted March 19, 2013 Someone mentioned Arion....here's the original, pic from this past summer. Share this post Link to post Share on other sites
paps49 277 #263 Posted March 19, 2013 In image form: I like everything about it except the draft. Really like the large cockpit. I'd make Bob design it with a centerboard or daggerboard, which would totally screw up that little cabin. But at least I could back it onto the beach like other cool boats. She's cute, alright. Maybe leave out the lazarette (or is it a watertight compartment) too? How can you tell if there is a lazarette from that drawing? Share this post Link to post Share on other sites
Sailbydate 574 #264 Posted March 19, 2013 In image form: I like everything about it except the draft. Really like the large cockpit. I'd make Bob design it with a centerboard or daggerboard, which would totally screw up that little cabin. But at least I could back it onto the beach like other cool boats. She's cute, alright. Maybe leave out the lazarette (or is it a watertight compartment) too? How can you tell if there is a lazarette from that drawing? I can't, 'Paps'. But there seemed to be one (or perhaps just a stern watertight bulkhead) in the photograph. Go back a couple of posts to check it out. Share this post Link to post Share on other sites
Contumacious Tom 671 #265 Posted March 19, 2013 The pic in post 252 by Tricky shows that the cockpit ends and then there's a couple of feet of white. Could be a locker, could be a watertight compartment, but I think it's where they hid an outboard. Who puts a diesel in a 20 footer? Besides Com-Pac, I mean. Share this post Link to post Share on other sites
Bob Perry 448 #266 Posted March 19, 2013 The fixed keel is there for a reason and for the record I think this is a "cool" boat even if you can't park it on the beach. Not everyone wants to do that. This keel and hull form were chosen because both the client and his wife have bad knees and they wanted a very stiff boat. I seldom choose a major designn feature arbitrarily. Yes, there is a small laz aft. Here is a rendering of the boat that Sons did a while back. I think this was the first project I worked on with Sons. He did a beautiful job. You can see in this rendering how I intended the coamings to be. Builders! Share this post Link to post Share on other sites
Contumacious Tom 671 #267 Posted March 19, 2013 The fixed keel is there for a reason and for the record I think this is a "cool" boat even if you can't park it on the beach. Not everyone wants to do that. ... Yes, there is a small laz aft. ... I worded that poorly, but I think it's a cool boat even with the 4' draft, just not cool for me. Is that boat diesel or outboard powered? My earlier reference to Com-Pac putting a diesel in a 20 footer was a Horizon Cat reference. It's a cool boat, but I would want the outboard version. I learned this morning that they have now put a diesel in their 20' sloop, the Eclipse, which is basically an old Com-Pac 19 that was cross-bred with a modern Hunter. I like them, but again would prefer the outboard one. I still like the Horizon Cat better. Here's the prototype diesel Eclipse: Share this post Link to post Share on other sites
camchain 3 #268 Posted March 19, 2013 The fixed keel is there for a reason and for the record I think this is a "cool" boat even if you can't park it on the beach. Not everyone wants to do that. This keel and hull form were chosen because both the client and his wife have bad knees and they wanted a very stiff boat. I seldom choose a major designn feature arbitrarily. Yes, there is a small laz aft. Here is a rendering of the boat that Sons did a while back. I think this was the first project I worked on with Sons. He did a beautiful job. You can see in this rendering how I intended the coamings to be. Builders! That is a beautiful boat Bob. I would love to play with that tiny topsail. Share this post Link to post Share on other sites
camchain 3 #269 Posted March 19, 2013 Who puts a diesel in a 20 footer? Besides Com-Pac, I mean. I put one in my old Mystic 20. Share this post Link to post Share on other sites
Bob Perry 448 #270 Posted March 19, 2013 I loved my little 9.5hp Volvo diesel in the mighty PERRYWINKLE. I would not want to live with an outboard given the amount of motoring we have to do in Puget Sound. That said, I did spec an outboard in my "ultimate 21'er" I drew for myself. I spent many a pleasant hour put, put, putting up the Sound on a glassy sea with the little diesel. I'm a Volvo small diesel fan. In case you are wondering about the sail logo on my 20'er: We called the boat the "Old Farts 20". The cloud coming off the "20" is supposed to be a fart. Share this post Link to post Share on other sites
Veeger 111 #271 Posted March 19, 2013 The fixed keel is there for a reason and for the record I think this is a "cool" boat even if you can't park it on the beach. Not everyone wants to do that. This keel and hull form were chosen because both the client and his wife have bad knees and they wanted a very stiff boat. I seldom choose a major designn feature arbitrarily. Yes, there is a small laz aft. Here is a rendering of the boat that Sons did a while back. I think this was the first project I worked on with Sons. He did a beautiful job. You can see in this rendering how I intended the coamings to be. Builders! Sons does good work, really makes a boat come alive before it is built in the flesh. The OF20 is pretty sweet! I'm almost tempted to replace my YOD picture with this rendering for my desktop wallpaper..... almost. Share this post Link to post Share on other sites
Trickypig 86 #272 Posted March 19, 2013 That said, I did spec an outboard in my "ultimate 21'er" I drew for myself. Hi Bob, I went everywhere looking for a drawing of this boat, forums, blogs etc but I couldn't find anything. You may have posted something before but would you mind if we had a `stickybeak' at a drawing of this boat? Share this post Link to post Share on other sites
Bob Perry 448 #273 Posted March 19, 2013 Tricky: Here you go. Not sure which iteration this is but it was the first jpeg I came to. Share this post Link to post Share on other sites
Bob Perry 448 #274 Posted March 19, 2013 Herev is the layout. Note the guitar stowage space. Share this post Link to post Share on other sites
Trickypig 86 #275 Posted March 19, 2013 Herev is the layout. Note the guitar stowage space. Cool. She has plenty of keel and rig; a sailor's boat. Share this post Link to post Share on other sites
dolphinmaster 6 #276 Posted March 19, 2013 I loved my little 9.5hp Volvo diesel in the mighty PERRYWINKLE. I would not want to live with an outboard given the amount of motoring we have to do in Puget Sound. That said, I did spec an outboard in my "ultimate 21'er" I drew for myself. I spent many a pleasant hour put, put, putting up the Sound on a glassy sea with the little diesel. I'm a Volvo small diesel fan. In case you are wondering about the sail logo on my 20'er: We called the boat the "Old Farts 20". The cloud coming off the "20" is supposed to be a fart. For some reason, it looks like a wet fart Share this post Link to post Share on other sites
kdh 51 #277 Posted March 19, 2013 I've never seen a fart before, thanks for sharing, Bob. I like the way you put "[description of boat] for [lucky owner]" on your drawings. Share this post Link to post Share on other sites
Jose Carumba 3 #278 Posted March 19, 2013 I used to have an outboard on the back of one of my boats. It was OK. The sound in the cabin with the engine running was subdued, and in the cockpit it wasn't too terrible. Mounted way aft it tended to pop out of the water in a heavy chop untill you got going fast enough to pull up the stern wave, but in those conditions you are generally sailing anyway. Share this post Link to post Share on other sites
Sailbydate 574 #279 Posted March 20, 2013 The fixed keel is there for a reason and for the record I think this is a "cool" boat even if you can't park it on the beach. Not everyone wants to do that. ... Yes, there is a small laz aft. ... I worded that poorly, but I think it's a cool boat even with the 4' draft, just not cool for me. Is that boat diesel or outboard powered? My earlier reference to Com-Pac putting a diesel in a 20 footer was a Horizon Cat reference. It's a cool boat, but I would want the outboard version. I learned this morning that they have now put a diesel in their 20' sloop, the Eclipse, which is basically an old Com-Pac 19 that was cross-bred with a modern Hunter. I like them, but again would prefer the outboard one. I still like the Horizon Cat better. Here's the prototype diesel Eclipse: Smart little boat. Share this post Link to post Share on other sites
SemiSalt 69 #280 Posted March 20, 2013 I put one in my old Mystic 20. Someday, I may go back to catboating, and I can hope there is Mystic 20 to be found. Share this post Link to post Share on other sites
Ishmael 1,747 #281 Posted March 21, 2013 A nice pair... Share this post Link to post Share on other sites
Contumacious Tom 671 #282 Posted March 21, 2013 Those are sweet, Ish. That blue one appears to me to have a big nose. Share this post Link to post Share on other sites
Ishmael 1,747 #283 Posted March 21, 2013 Those are sweet, Ish. That blue one appears to me to have a big nose. She does have a bit of a bob. (Not you, Bob). WHL will be along shortly to wax rhapsodic. Share this post Link to post Share on other sites
Sailbydate 574 #284 Posted March 21, 2013 Those are sweet, Ish. That blue one appears to me to have a big nose. She does have a bit of a bob. (Not you, Bob). WHL will be along shortly to wax rhapsodic. Nice. Any idea where that anchorage is? Talk about the ideal set-up. Wow. Share this post Link to post Share on other sites
sparau 9 #285 Posted March 21, 2013 Those are sweet, Ish. That blue one appears to me to have a big nose. She does have a bit of a bob. (Not you, Bob). WHL will be along shortly to wax rhapsodic. wow, that shot looks like a diarama ! long depth of field, modern digital camera enhancement of the lighting with that cabin, flat water... interesting photo Share this post Link to post Share on other sites
miloman 0 #286 Posted March 21, 2013 Those look like R boats. Lady Van and Pirate maybe? I love the hollow in the white one's forward overhang. Beautiful picture too. Share this post Link to post Share on other sites
Steam Flyer 1,002 #287 Posted March 21, 2013 Those are sweet, Ish. That blue one appears to me to have a big nose. She does have a bit of a bob. (Not you, Bob). WHL will be along shortly to wax rhapsodic. I didn't think wax on varnish was a good idea... varies by climate I suppose... FB- Doug Share this post Link to post Share on other sites
Bob Perry 448 #288 Posted March 21, 2013 Milo: I don't see any hollow at all in the white boats bow overhang. Where do you see it? Share this post Link to post Share on other sites
Whinging Pom 36 #289 Posted March 21, 2013 I'd been meaning to post pictures of this under the general cool boat thread, but the invasion of the thread by Scandinavian style boats has prompted me to go questing for photos from the owner's website. She may be the coolest boat I know in my neck of the woods (or at least the coolest new build): she's a really outrageous 70 foot take on a Tumlare, designed and built by her owner, who seems to be one of those people who can do a million things before lunch - start a corporation, have a family, design and build a boat . . . Anyway, a boat that conforms to nothing at all, just wants to go faster and look better. Makes the Spirit boats (to whom she's a neighbour) look like conformist consumer items. She's been for sale for a while, but you can just imagine the equation that the average boat buyer makes between berthing fees, accommodation etc. http://www.keme.net/...ine/WEB1/madam/ If I didn't have the second coolest new build wooden boat on the East Coast . . . E I've sailed past that boat on her mooring loads of times. She looks deceidedly weird. Flat sheer, an awful lot of boat aft of the mast, slabby topsides the canoe stern is all wrong. The perils of a custom design. De gustibus non est disputandum. Share this post Link to post Share on other sites