12'6'' Medway Doble

[Songololo]

How about Selway Fisher's 12'6'' Medway Doble as a cartoppable, one-up, general sail & oar boat for sheltered waters?

She has a V-bottom (low deadrise?) and a narrow tombstone transom, built in buoyancy fore and aft, essentially double ended, seems to be a quick and fairly simple S&G build...

http://www.selway-fisher.com/MedDob12d1.gif

http://www.selway-fisher.com/MedDob12p1.jpg

http://www.selway-fisher.com/MedDob12p2.jpg


Medway Doble 12'6" Particulars
LOA 12'6" 3.81m Beam 4'6" 1.37m Hull Mid Depth 1'7 1/2" 0.5m Draft 7"/2'11" 0.18/0.89m Sail Area 77 sq.ft 7.16 sq.m Approx. Dry Weight 95lbs 43kg
Hull Shape
Multi-chine with 3 planks per side Construction Method Stitch and tape Major plywood requirements for hull 4 1/2 sheets of 6mm exterior or marine plywood Guidance Use 2-3 adults for rowing - 2 adults for sailing Drawing/Design Package 2 x A1 drawings + 6 x A4 instruction sheets
More details here (http://www.selway-fisher.com/Other1013.htm#MED).

Good, bad or ugly???

[Cuyahoga Chuck]

At 95 lb. she should be cartoppable but certain provisos have to be met.
Is this an factual weight or a calculated weight?
And most of all can you constrain yourself to build to the minimum weight. Building light takes some skill and personal modifications, usually, have to be avoided. You have to use the lightest weight materials and epoxy usage must be kept to an absollute minimum. It's very easy to turn a 100 lb. S&G hull into a 150 lb. S&G hull by making unwise choices.

[Steve Paskey]

95 pounds seems very doable for that boat. The CLC Skerry is 95 pounds and it's 2-1/2 feet longer. (The interior layout is similar, and both are built primarily from 6 mm ply.)

[johngsandusky]

Cartop weight limits also depend on your strength. I built a boat in my twenties that I could cartop, or carry on my back. In my forties I could just drag it up the beach. Do you think it gained weight?

[JimD]

The crux of single handing a boat onto the top of a vehicle is not so much the weight but the beam. It'd be a lot easier (as in maybe impossible if you don't) if you design some clever handholds on the center thwart. I can tell you from experience its easy for me to get a 24"wide kayak onto the roof but impossible to get a 48" wide dinghy on top even though there isn't much difference in weight.

[JimD]

You might also want to look at the CLC Skerry which claims to come in at 95# and is 15 feet long. SF's 15 foot version of the MD is estimated at 150#. These are very similar in dimension and frankly I have a hard time seeing how clc could come up with essentially the same boat at a third less weight. Build in occume as its the lightest ply available.