02-04-2025, 05:10 PM
Peasso artículo de Paolo:
ARE OLDER SAILBOATS WORSE THAN RECENT DESIGNS? (1st part) - Sailing performance and hull design
https://interestingsailboats.blogspot.co...date=false
Sobre diferentes tipos de cascos y sus efectos en navegación. Nada nuevo, pero interesante de leer.
A ver que os parece....
........."This is the first part of a post about the design of modern cruising sailboats, compared to designs found primarily on older boats.
The first part, this one, is about the performance of different types of hulls, the second will be about advantages and disadvantages of the different types of hulls for cruising, and the third will be about which type of boat and type of hulls is the best suited for the different types of people who cruise, keeping in mind their preferences, when it comes to sailing and cruising.
It gives me too much work, but it aims to respond to the many who send me emails wanting to know which boat they should buy, and once and for all to clarify that the type of boat I cruise with, and which for me is the ideal boat, has nothing to do with other people's ideal boats, with other preferences, when it comes to sailing or cruising. In fact my preference is a minority one, in what regards sailing and cruising.
Y si todavía queréis más....
https://interestingsailboats.blogspot.co...-results=7
...Many will try to sell you the idea that a monolithic hull is better because it is more resistant to impacts, but I dont think that is true. Used in a monolithic way fiberglass is much more brittle than a sandwich composite. A sandwich has a bigger absorption energy potential and after breaching the first layer, it has to go through the core, that due to te resin has become hard (specially if it is high quality foam) and will absorb a lot of energy, till the inside layers are eventually breached.
....So this means that older boats are worse? Not necessarily, besides many older expensive boats use already sandwich hulls since decades ago, and I have to say that in what regards contemporary production main market boats from the big brands the cuts in costs are bigger than what they were 20 years ago, meaning that if a model from the same brand and model was built today by the same factory, it would result in a more expensive boat, and if it was a model with 25 years it would cost even more to produce.
This does not mean that contemporary MMC from the big brands are not good boats, in fact they have an amazing price for the quality they offer, but will they last so many years as 20 or 30 year-old boats? I doubt very much, but who buys a new boat in average have only that boat for 5 to 8 years, and they are built to last much more than that, several times more.
Regarding more expensive boats each case is a case but in what regards older expensive MMC there was a tendency to make them more adapted as bluewater boats, meaning that in the design criteria that usage was more considered than it is now. Of course, that has advantages and disadvantages, depending if you use more the boat to do bluewater sailing or more to do coastal sailing, and if the balance was changed to coastal sailing it is because many more are using the boats as coastal cruisers, most of the time, and very few are using them to sail bluewater.
This year, before sailing away, I had near me an "old" Contest 44 that was for sale and I could see that all in the boat was oversized and that the boat was certainly very strong, sandwich hull and all, relatively narrow, with a nice hull, a 1999 design by Dick Zall, but with an horrible huge low draft keel with 6000kg, and a barn door rudder, that would create a lot of drag. The boat looked very nice with a classic look and would be beautiful on the water.
With the exception of the keel and rudder the boat looked classic and very nice and I found it not to be expensive, at 85,000 euros. I even thought that if someone wanted a good voyage boat maybe it would make sense to spend 75,000 euros in having a NA designing, certifying and building a modern keel for that boat, a keel with a torpedo with 2.3 meters draft, and a deep spade rudder, to substitute the barn door.
That would result in a 1000kg lighter keel, in a lighter boat with much less drag and a faster boat. I guess that with more 125,000 euros for a complete refit, the boat would be in very good condition and would look like new, a total of 285,000 euros and that's the price of a new Oceanis 40.1.
I would strongly recommend this type of solution to somebody that has the budget for a new 40ft main brand MMC and want a boat to make a circumnavigation, being the Contest 44 a boat much more adapted to ocean sailing. But I would recommend a new Oceanis 40.1 (or a similar type of boat) as a good solution for somebody with that budget, that wants an "inexpensive" boat to coastal sail in the season, and even for making one or two ocean passages, also on the right season, and does not want to lose time with maintenance and want to have less expensive marina and port fees....
ARE OLDER SAILBOATS WORSE THAN RECENT DESIGNS? (1st part) - Sailing performance and hull design
https://interestingsailboats.blogspot.co...date=false
Sobre diferentes tipos de cascos y sus efectos en navegación. Nada nuevo, pero interesante de leer.
A ver que os parece....
........."This is the first part of a post about the design of modern cruising sailboats, compared to designs found primarily on older boats.
The first part, this one, is about the performance of different types of hulls, the second will be about advantages and disadvantages of the different types of hulls for cruising, and the third will be about which type of boat and type of hulls is the best suited for the different types of people who cruise, keeping in mind their preferences, when it comes to sailing and cruising.
It gives me too much work, but it aims to respond to the many who send me emails wanting to know which boat they should buy, and once and for all to clarify that the type of boat I cruise with, and which for me is the ideal boat, has nothing to do with other people's ideal boats, with other preferences, when it comes to sailing or cruising. In fact my preference is a minority one, in what regards sailing and cruising.
Y si todavía queréis más....
https://interestingsailboats.blogspot.co...-results=7
...Many will try to sell you the idea that a monolithic hull is better because it is more resistant to impacts, but I dont think that is true. Used in a monolithic way fiberglass is much more brittle than a sandwich composite. A sandwich has a bigger absorption energy potential and after breaching the first layer, it has to go through the core, that due to te resin has become hard (specially if it is high quality foam) and will absorb a lot of energy, till the inside layers are eventually breached.
....So this means that older boats are worse? Not necessarily, besides many older expensive boats use already sandwich hulls since decades ago, and I have to say that in what regards contemporary production main market boats from the big brands the cuts in costs are bigger than what they were 20 years ago, meaning that if a model from the same brand and model was built today by the same factory, it would result in a more expensive boat, and if it was a model with 25 years it would cost even more to produce.
This does not mean that contemporary MMC from the big brands are not good boats, in fact they have an amazing price for the quality they offer, but will they last so many years as 20 or 30 year-old boats? I doubt very much, but who buys a new boat in average have only that boat for 5 to 8 years, and they are built to last much more than that, several times more.
Regarding more expensive boats each case is a case but in what regards older expensive MMC there was a tendency to make them more adapted as bluewater boats, meaning that in the design criteria that usage was more considered than it is now. Of course, that has advantages and disadvantages, depending if you use more the boat to do bluewater sailing or more to do coastal sailing, and if the balance was changed to coastal sailing it is because many more are using the boats as coastal cruisers, most of the time, and very few are using them to sail bluewater.
This year, before sailing away, I had near me an "old" Contest 44 that was for sale and I could see that all in the boat was oversized and that the boat was certainly very strong, sandwich hull and all, relatively narrow, with a nice hull, a 1999 design by Dick Zall, but with an horrible huge low draft keel with 6000kg, and a barn door rudder, that would create a lot of drag. The boat looked very nice with a classic look and would be beautiful on the water.
With the exception of the keel and rudder the boat looked classic and very nice and I found it not to be expensive, at 85,000 euros. I even thought that if someone wanted a good voyage boat maybe it would make sense to spend 75,000 euros in having a NA designing, certifying and building a modern keel for that boat, a keel with a torpedo with 2.3 meters draft, and a deep spade rudder, to substitute the barn door.
That would result in a 1000kg lighter keel, in a lighter boat with much less drag and a faster boat. I guess that with more 125,000 euros for a complete refit, the boat would be in very good condition and would look like new, a total of 285,000 euros and that's the price of a new Oceanis 40.1.
I would strongly recommend this type of solution to somebody that has the budget for a new 40ft main brand MMC and want a boat to make a circumnavigation, being the Contest 44 a boat much more adapted to ocean sailing. But I would recommend a new Oceanis 40.1 (or a similar type of boat) as a good solution for somebody with that budget, that wants an "inexpensive" boat to coastal sail in the season, and even for making one or two ocean passages, also on the right season, and does not want to lose time with maintenance and want to have less expensive marina and port fees....
