TEOTWAWKI Boat

No problem. But you should not have fixed it. We had fun with it.

You hull would be happiest with 2.25' spacing running at 3.12 knots, Hull speed of 1.14. Above 3.12 it is going uphill trying to break the hull speed and the wave interference until it reaches the speed of 3.8 knots where wave interference is fullest. After this hump, the hull is going downhill again, starting to gain efficiency but now in the planing mode.

Attached graph by Tasaki (1962)

 

Thanks for the data and graph, rxcomposite. I also have the cross-beams drilled to set the hulls 2.5 feet(0.76 meter) apart, their original configuration, which can be adjusted at the beach after de-trailering. I just haven't bothered to try it on the water at that width. This would make the width of the boat at the waterline 72 inches(1.83 meters).

 

On the Hillsborough River going upriver to Lowry Park today.

 

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Hoyt, that looks like it was a blast for both of you!

 

It was a good time.

 

CHEESE

Looking good

 

Thx. It was a hoot!

 

Oink Oink

 

looking good

 

Thanks. I am still coming up with ideas to try to improve upon it, such as snaps and canvas or a semi-hatch cover over aft cockpit to guard against waves hitting over the stern.

 

Construction of add-on buoyant compartments begins.

Length of additions is 18 inches(45.72 cm).

 

Hoyt: The extensions will change the nature of the boat for the better. Safer too. The picture implies that you will taper the extensions in plan view. They will have maximum benefit if they are not tapered, and end in a plain box shape. You might have to spread the pontoons to avoid having the lower unit of the motor from fouling the boxes when turned at sharp angles. Maybe not. In any case the extensions will need to be attached hell for strong. They will take a signifigant load when you are running at speed.

Keep up the good work.

 

When I was a kid I added bouyancy boxes to the rear end of my skiff that were dual purpose. Bouyancy when dry so I could stand on the transom when poling and live boxes for crabs, fish , when the plug was pulled and flooded . If your a fisherman is a handy detail

 

Caddo Lake bateaus (a form of pirogue) had a fish well and baitwell across the center of the boat, with holes drilled in the bottom.

http://books.google.com/books?id=cm...Q6AEwAQ#v=onepage&q=caddo lake bateau&f=false

 

Thanks, messabout. As the photo suggests the add-ons are tapered to reduce leverage as distance from original stern increases. There are eight 1/4" by 4" bolts holding each extension to the original stern. The extension will be glassed and sealed with epoxy.