bullnose hull design

I am planning to build another all aluminum house boat. I am considering adding a bull nose concept to the bow in an effort to decrease the fuel consumption. do you have any input or help?
thx ed

 

that's interesting, how big are you thinking?

 

54' & 13 wide

 

Bullnose: Do you mean a rounded or semispherical bow section? That might help a little bit. What you do with the buttocks may have more influence than nose pieces. Here it is presumed that you are not anticipating more than 6-8 MPH operating speed.

Being extremely stingey with all up weight is a major key to operating economy. For every pound of boat it must push a pound of water out of the way. Reject granite counter tops, cast iron bathtubs and other weighty luxuries.

 

Presumably he's talking about a bulbous bow, as used on large ships ? If so, it would be just a waste of time, imo.

 

bull nose like on cargo ships bow. I know weight is issue. everything will be aluminum. i'm looking for info on how the nose to boat contour will occur

 

Edwin,

These types of bows are only effective at a very narrow range of speed, and every speed requires a different bulbous shape. Even on freighters they are hard to get right and require substantial flow analysis to design. I doubt that a recreational build would be capable of justifying this level of design work given the limited amount of underway time you will see.

 

thanks much for the input. Maybe I will go with traditional bow shape.