Saltwater vs. Fresh

[jeffbare]

Does anyone know what the differance in performance is with the same boat going from salt to fresh water? If a boat goes 80 mph at sea level on a lake, what would the same boats top end be on salt water? Any thoughts on this?

[Reaction19]

I Gained Almost 2 Mph From Salt To Fresh In The Winter And The Boat Seemed To Carry The Bow Higher

[Hot Shot Merc]

Salt water is more bouyant.You should be faster in the salt.Take a hydrometer used for checking the salinity in a salt water aquarium and then put fresh water in it.The meter just drops to the bottum where as the salt water would make the plastic meter or bar float.

[mjwalters]

2mph is a generally accepted number

[hdtwncam88]

should be faster in salt

[jeffbare]

I know why it is faster, I sometimes explain it to people that the water is denser and provides better boyancy, and "traction". I wasn't sure what the extra performance was.
Thanks,
Jeff

[Reaction19]

I Was Under The Impression That Freshwater Water More Slippery And Thats Why I Went Faster In It. But It Could Have Also Been The Fact That The Air Temp And Conditions Were Rite.

[jeffbare]

When I plug in the factors in the prop calculators, I am assuming a 10% slip in fresh water, any ideas what it might be for salt?
Jeff