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#1
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Large rowboat for large family
Can anyone recommend a design?
I want to build a boat my wife and I can row with our whole family aboard. It is a large family - 2 adults, 5 children (ranging from new-born twins to 8 years) and 2 dogs of 20kg each. So we need a rowing boat carrying almost 300kg of biomass plus lunch, drinks, spare clothes, towels, rain coats, toys, outboard, first aid kit, flares, fuel, sun umbrellas, anchor, chain, etc, etc ... That is a lot of weight but it is also a lot of feet, knees, elbows and paws - which add up to a lot of space. It will be a ply sharpie. I like the flat bottom for initial stability and the ability to put a window in it (I have visions of the toddlers peering delightedly through it at the teaming marine life below. I like the relatively narrow waterline for efficient rowing and the avoidance of excessive heal induced by beam seas. I like the single side-plank for ease of construction. We don't plan to be out in bad weather but getting caught happens to the best. The boat needs to be able to handle estuary and coastal conditions. John Welsford's Mollyhawk (http://www.jwboatdesigns.co.nz/plans...index.htm#mlhk) is attractive but, I suspect a bit small. I have Carlson's design software and could build a boat from the offsets it produces and would do if I felt capable of getting the design compromises right. In particular the compromise of initial stability vs excessive, sudden wave-induced heal vs efficiency under oars needs an experienced designer's eye to my thinking and I have never built a boat to my own design before. John thought his Walkabout design would be perfect and he is probably right. However, the multichine construction is more complex than I have in mind. Furthermore, as a decked sailing and rowing design the plans are more complex (and therefore expensive) than I need. It seams a pity to pay for the design of a sophisticated camp-cruiser then build it without decks, centrecase, rig, tent etc. etc. So I am open to suggestions for a basic flat-bottomed, single sideplank rowing sharpie, probably about 20' long. Paul. |
#2
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Large rowboat for large family
Gee for that size crowd you might think of a Whitehall
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#3
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Large rowboat for large family
Too complex to build.
"Brian Combs" wrote in message news Gee for that size crowd you might think of a Whitehall |
#4
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Large rowboat for large family
"Paul Squire" ) writes:
So I am open to suggestions for a basic flat-bottomed, single sideplank rowing sharpie, probably about 20' long. If you have Basic on your computer you can copy a free program from my website to try different dimensions of flat bottom sharpie skiff. Go to www.ncf.ca/~ag384/Boats.htm and scroll down until you see the skiff program. There are two files to copy, a text file of instructions, and a text file containing the Basic program. Another option is to down load the Carlson Hull program, load up one of the sharpie examples, and use the scaling feature to play with the length and width until you get a boat that will carry your load with sufficently shallow draft. Its at www.carlsondesign.com. But note in the instructions to my program what Chapelle wrote about the underwater shape of a shrarpie skiff to keep rowing from being "heavy". I hope some of those kids are old enough to pull on an oar. -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
#5
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Large rowboat for large family
I usually think of a sharpie as a sailing design.
I built a 19 ft one years ago and it sailed fast but was hard to row. It also tended to pound quite a bit in a chop. For rowing a big boat, and one that was flat bottomed and simple to build, I'd lean toward a dory. Though the initial stability may be a bit less then seems comfortable, you'd be hard pressed to roll one of these over in most conditions. Here are links to two photos of heavy work dories. http://www.geocities.com/boats2build2003/300dories.jpg http://www.geocities.com/boats2build2003/300dories2.jpg One guy who has successfully used another type of dory for rowing is Mick Bird. If fact he has rowed across a couple of oceans with his. I realise that his boat is custom designed for a very specific purpose, but it may bea starting place for ideas. http://www.goals.com/transrow/ Mabey you can find a stretched out version of a dory in plywood somewhere like from John Gardner or somebody. Then again, why not build a real one using planks instead of plywood? The real ones are still being made from white pine. Of course anything as large as you are looking for would have to be trailered rather than car topped. As soon as you get big enough to trailer, the weight becomes somewhat less of an issue and my thought would be to go toward beefy rather than light weight. SteveJ Paul Squire wrote: Can anyone recommend a design? I want to build a boat my wife and I can row with our whole family aboard. It is a large family - 2 adults, 5 children (ranging from new-born twins to 8 years) and 2 dogs of 20kg each. So we need a rowing boat carrying almost 300kg of biomass plus lunch, drinks, spare clothes, towels, rain coats, toys, outboard, first aid kit, flares, fuel, sun umbrellas, anchor, chain, etc, etc ... That is a lot of weight but it is also a lot of feet, knees, elbows and paws - which add up to a lot of space. It will be a ply sharpie. I like the flat bottom for initial stability and the ability to put a window in it (I have visions of the toddlers peering delightedly through it at the teaming marine life below. I like the relatively narrow waterline for efficient rowing and the avoidance of excessive heal induced by beam seas. I like the single side-plank for ease of construction. We don't plan to be out in bad weather but getting caught happens to the best. The boat needs to be able to handle estuary and coastal conditions. John Welsford's Mollyhawk (http://www.jwboatdesigns.co.nz/plans...index.htm#mlhk) is attractive but, I suspect a bit small. I have Carlson's design software and could build a boat from the offsets it produces and would do if I felt capable of getting the design compromises right. In particular the compromise of initial stability vs excessive, sudden wave-induced heal vs efficiency under oars needs an experienced designer's eye to my thinking and I have never built a boat to my own design before. John thought his Walkabout design would be perfect and he is probably right. However, the multichine construction is more complex than I have in mind. Furthermore, as a decked sailing and rowing design the plans are more complex (and therefore expensive) than I need. It seams a pity to pay for the design of a sophisticated camp-cruiser then build it without decks, centrecase, rig, tent etc. etc. So I am open to suggestions for a basic flat-bottomed, single sideplank rowing sharpie, probably about 20' long. Paul. |
#6
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Large rowboat for large family
I agree with Steve,
If you want to carry a large load and still row yourself around then the dory design is most appropriate. Dories come in many shapes and sizes but the predominate feature about them seems to be their seaworthiness. For your requirements a tradional "banks style" dory would do the job. John Gardner(echoing steve again) has a book entirely devoted to them called "The Dory Book", complete with history and "how to" as well as plans for more than a dozen different kinds. His other works also contain dory plans, some reworked, which offer alternatives such as motor wells(for outboards) or surfboats capable of beach launching. In his works he writes that all the dories can be built using plywood as a substitute for the traditional white pine. By the way...a dory in the 20 foot catagory is a very large boat to row singlehanded. Another alternative to Gardner would be a design by Ian Oughtred. He designed a dory called "John Dory" out of plywood. It is 18'-6" OAL and about 4'-6" beam. It incorporates a motorwell and is designed to row or sail as well. With a small sacrafice in size you can have it all. I think "Wooden Boat publications" sells the plans. I have a personal set that I plan to use one day..but I can give you details from them if you want. If you go with Oughtred buy his book on plywood boatbuilding too. Lots of pics and usefull tips for building plywood lapstrake. Regards ,Mike Brannon "stevej" wrote in message ... I usually think of a sharpie as a sailing design. I built a 19 ft one years ago and it sailed fast but was hard to row. It also tended to pound quite a bit in a chop. For rowing a big boat, and one that was flat bottomed and simple to build, I'd lean toward a dory. Though the initial stability may be a bit less then seems comfortable, you'd be hard pressed to roll one of these over in most conditions. Here are links to two photos of heavy work dories. http://www.geocities.com/boats2build2003/300dories.jpg http://www.geocities.com/boats2build2003/300dories2.jpg One guy who has successfully used another type of dory for rowing is Mick Bird. If fact he has rowed across a couple of oceans with his. I realise that his boat is custom designed for a very specific purpose, but it may bea starting place for ideas. http://www.goals.com/transrow/ Mabey you can find a stretched out version of a dory in plywood somewhere like from John Gardner or somebody. Then again, why not build a real one using planks instead of plywood? The real ones are still being made from white pine. Of course anything as large as you are looking for would have to be trailered rather than car topped. As soon as you get big enough to trailer, the weight becomes somewhat less of an issue and my thought would be to go toward beefy rather than light weight. SteveJ Paul Squire wrote: Can anyone recommend a design? I want to build a boat my wife and I can row with our whole family aboard. It is a large family - 2 adults, 5 children (ranging from new-born twins to 8 years) and 2 dogs of 20kg each. So we need a rowing boat carrying almost 300kg of biomass plus lunch, drinks, spare clothes, towels, rain coats, toys, outboard, first aid kit, flares, fuel, sun umbrellas, anchor, chain, etc, etc ... That is a lot of weight but it is also a lot of feet, knees, elbows and paws - which add up to a lot of space. It will be a ply sharpie. I like the flat bottom for initial stability and the ability to put a window in it (I have visions of the toddlers peering delightedly through it at the teaming marine life below. I like the relatively narrow waterline for efficient rowing and the avoidance of excessive heal induced by beam seas. I like the single side-plank for ease of construction. We don't plan to be out in bad weather but getting caught happens to the best. The boat needs to be able to handle estuary and coastal conditions. John Welsford's Mollyhawk (http://www.jwboatdesigns.co.nz/plans...index.htm#mlhk) is attractive but, I suspect a bit small. I have Carlson's design software and could build a boat from the offsets it produces and would do if I felt capable of getting the design compromises right. In particular the compromise of initial stability vs excessive, sudden wave-induced heal vs efficiency under oars needs an experienced designer's eye to my thinking and I have never built a boat to my own design before. John thought his Walkabout design would be perfect and he is probably right. However, the multichine construction is more complex than I have in mind. Furthermore, as a decked sailing and rowing design the plans are more complex (and therefore expensive) than I need. It seams a pity to pay for the design of a sophisticated camp-cruiser then build it without decks, centrecase, rig, tent etc. etc. So I am open to suggestions for a basic flat-bottomed, single sideplank rowing sharpie, probably about 20' long. Paul. |
#7
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Large rowboat for large family
let me get this straight... you're planning to row a boat that's carrying
300kg of people plus their gear? may i suggest you reconsider and look at getting a nice little outboard or at least an electric trolling motor.. hugh "Paul Squire" wrote in message ... Can anyone recommend a design? I want to build a boat my wife and I can row with our whole family aboard. It is a large family - 2 adults, 5 children (ranging from new-born twins to 8 years) and 2 dogs of 20kg each. So we need a rowing boat carrying almost 300kg of biomass plus lunch, drinks, spare clothes, towels, rain coats, toys, outboard, first aid kit, flares, fuel, sun umbrellas, anchor, chain, etc, etc ... That is a lot of weight but it is also a lot of feet, knees, elbows and paws - which add up to a lot of space. It will be a ply sharpie. I like the flat bottom for initial stability and the ability to put a window in it (I have visions of the toddlers peering delightedly through it at the teaming marine life below. I like the relatively narrow waterline for efficient rowing and the avoidance of excessive heal induced by beam seas. I like the single side-plank for ease of construction. We don't plan to be out in bad weather but getting caught happens to the best. The boat needs to be able to handle estuary and coastal conditions. John Welsford's Mollyhawk (http://www.jwboatdesigns.co.nz/plans...index.htm#mlhk) is attractive but, I suspect a bit small. I have Carlson's design software and could build a boat from the offsets it produces and would do if I felt capable of getting the design compromises right. In particular the compromise of initial stability vs excessive, sudden wave-induced heal vs efficiency under oars needs an experienced designer's eye to my thinking and I have never built a boat to my own design before. John thought his Walkabout design would be perfect and he is probably right. However, the multichine construction is more complex than I have in mind. Furthermore, as a decked sailing and rowing design the plans are more complex (and therefore expensive) than I need. It seams a pity to pay for the design of a sophisticated camp-cruiser then build it without decks, centrecase, rig, tent etc. etc. So I am open to suggestions for a basic flat-bottomed, single sideplank rowing sharpie, probably about 20' long. Paul. |
#8
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Large rowboat for large family
Almost half of that weight will be rowing (i.e.; both adults). I'm certain
it's feasible in the right boat. "hugh" wrote in message ... let me get this straight... you're planning to row a boat that's carrying 300kg of people plus their gear? may i suggest you reconsider and look at getting a nice little outboard or at least an electric trolling motor.. hugh |
#9
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Large rowboat for large family
"Paul Squire" ) writes:
Almost half of that weight will be rowing (i.e.; both adults). I'm certain it's feasible in the right boat. not so sure about that. one hand for the boat. one hand for yourself. one hand for the kids. one hand for the dog. I think it's feasible if the kids row. One of those situations where a large family is actually an asset, like farming. -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
#10
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Large rowboat for large family
"Paul Squire" wrote in message ... Almost half of that weight will be rowing (i.e.; both adults). I'm certain it's feasible in the right boat. "hugh" wrote in message ... let me get this straight... you're planning to row a boat that's carrying 300kg of people plus their gear? may i suggest you reconsider and look at getting a nice little outboard or at least an electric trolling motor.. hugh Here is a link to large "bank style dory" The claim is "row-power-sail." It's a 19 footer. he http://www.spirainternational.com/hd_alas.html |
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