What are these for and called

[ford_escape]

"Hi all. I am new to the forum

"Hi all. I am new to the forum and plan on staying a long while. I my old boat and my old Chrysler

But my question is..What are the black fins for in this pic? This is not my pic but one from this forum and those got my attention. thank you"

 

[steveo]

".....i cant see the pic? Do

".....i cant see the pic? Doh!

it sounds like you mean Hydrofoils?
to lower fuel consumption & get your boat on the plain easyer. =)"

 

[sea_slug]

"if these black things lower f

"if these black things lower fuel consumtion,how come the manufacturers didnt use them in their competitive fight to out-do each other over the years as they always claim their product now has more miles per gallon"