15' ROWER :|
12" at side
I've built a fifteen foot version of ATHELAS for a man in Oregon
who wanted a lighter boat. He named her HOJA ("leaf" in Spanish)
because she feels so light in the water.
ATHEY has all the same overall dimensions except length. Her
plank layout comes out very slightly different, and she needs 5 rather
than 3 frames. However, the three middle planks are 4 vice 6
mm plywood. These two changes subtract about 13 pounds, making car-topping
easier (and damaging a plank easier). You could build her all of 6 mm
sides and lose half the weight gain.
Setting her up for only one rower, vice two will shed another 4 pounds,
She weighed only 65 pounds!
With one rower, ATHEY draws about 3-1/2 inches, instead of 3-1/4,
and obviously, has slightly less ultimate load carrying capacity. But
either boat will carry two or three adults safely. Either boat is a
little tippy with only one person aboard, standing up, but stable enough
when seated for open water. ATHEY draws 6" with 3 aboard, and
has 6" freeboard.
There is a downside; subracting two feet starts increasing wavemaking
and overall resistance (drag) above 5 mph (4.3 knots) based on Matt
Brose' resistance calculation spreadsheet (www.marinerkayaks.com), or
other means of calculation.
Plans are $75. Custom Built, about $2000.