Twin hull sternwheeled landing craft

Ryland; This is not to be a fast boat. So any lttle thing you can do to reduce fuel consumption or perhaps add a tad of speed, then so much the better....right? Your drawing shows a vertical transom simply attached to a tubular hull. If you tuck the aft end of the tube up to the waterline you will remove a little or perhaps a lot of drag. As drawn, and displacing up to eight tons, this boat will have to haul a lot of the river behind it. Never mind that danged near all the pontoon boats are made the way your drawing shows.

 

Thanks for the advice. At this point, the hulls are finished and assembled. That doesn't mean an appendage is impossible if it means greatly enhanced performance. I'm not sure I understand just what you suggest. If you have the time, could you elaborate?

Ryland

 

He's talking about something like this...



where the hull slopes up at the stern. That allows the water to break away from the hull easily, whereas a straight keel and vertical transom create a 'suction' where the water gets confused and eddies around until it gets taken away. It's sort of like dragging a big chunk of water along behind you. Or like dragging a waterbed full of gasoline behind you. Something like that.

 

That's awesome, Bucky would be proud.

Based on your complex I would have thought your project would have gone in this direction: by Ganis Pribadi
http://ghanesa.multiply.com/photos/album/6/the_PROTOTYPE#




http://thefactoryfiveforum.com/album.php?albumid=97&attachmentid=1609

 

In the firearms business we call it a boat-tail. (duh) I can see where a tapered appendage might be useful. At a maximum of 9 knots do you think it would be worth the effort?

Ryland