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#11
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Large rowboat for large family
Paul Squire asks with a smile:
Are unreasonable adults heavier or lighter? ;-) Heavier - they carry too much baggage and have large chips on their shoulders. ;-) |
#12
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Large rowboat for large family
Hugh says:
No... it's 2 adults, 5 kids, two dogs, plus a long list of gear. that's what he said in the original post. Yup. I was really just mentally totting up the weight and equating it to multiples of easily-imagined weight units ;-) 17ft does sound small, but 20 feet should do it. Rowing that weight is not that painfull with two grown folks doing the work. I have been quite happy rowing my sister and two grown children around in an 18' whitehall-type boat. Adding another adult and two small kids shouldn't be too bad if the other adult is working too. Steve Stephen C. Baker - Yacht Designer http://members.aol.com/SailDesign/pr...cbweb/home.htm |
#13
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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 |
#14
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Large rowboat for large family
Paul,
You might look at Phil Bolger's "Big Dory". Ford Walton |
#15
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Large rowboat for large family
I grew up here in Hawaii on a canal that lead to the ocean in my
backyard. I had 5 siblings so a total of 6 kids. My dad in his 20 feet plywood Grand Banks Dory would row the lot of us the 3 miles to the beach on the weekends. Sometimes he'd head out the mouth of the canal into the open Pacific Ocean and row to the nearby small offshore islands so we could explore. Beauty of Dories besides their clean lines was the ease of rowing, and the inherent stability of the design, the more weigh in the boat the more stable it became. My vote goes to the Grand Banks style Dory. Spy in Hawaii |
#16
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Large rowboat for large family
the "Big Dory" design says it is designed for 1-3 adults, and if you look at
the plans you'll see that there's no way you'll get 2 adults, 5 kids, two dogs, and a long list of gear into that boat. well, as i said before - no way that you could get all that gear in and still consider it safe on coastal waters.. hugh "Ford and Mary Ann Walton" wrote in message ... Paul, You might look at Phil Bolger's "Big Dory". Ford Walton |
#17
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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. |
#18
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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 |
#19
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Large rowboat for large family
Opps! try this link too. This page shows four average sized chaps hauling
in some nets into their dory....wondering if that equals weight of dogs+family+whatever. Just another idea...not pitching a sale here..good luck, Mike Here : http://www.spirainternational.com/hp_gbdories.html |
#20
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Large rowboat for large family
the tradeoff between the simple banks dory and flatiron skiff is draft and
floor space. the dory sinks deeper in the water because of its narrow bottom and transom. you can't put a motor on a dory and get it to plane. You may not be able to run a dory up on a beach and step out without getting your feet wet. I don't know how the dory and skiff compare on the amount of wetted surface friction which is what determines the energy needed to row them at the same speed. The free skiff program on my website computes wetted surface so it can be used to compare the two. (A skiff is a dory with a wider bottom and transom. Some of the rocker on a dory is removed by shaping the bottom plank. Its described in the instructions for the computer program.) "Mike Brannon" ) writes: Opps! try this link too. This page shows four average sized chaps hauling in some nets into their dory....wondering if that equals weight of dogs+family+whatever. Just another idea...not pitching a sale here..good luck, Mike Here : http://www.spirainternational.com/hp_gbdories.html -- ------------------------------------------------------------------------------ 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 |
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