ajt
New member
Will a boat float higher in the water if in sea water than in fresh? any thoughts please
Displacement?
- Thread starter ajt
- Start date
Colvic Watson
Well-known member
Lower in fresh - see ships plimsol lines. Specific Gravity of salty is higher - look at pictures of people floating in the very salty Dead Sea. Very marginal difference to the average yacht.
MIKE_MCKIE
New member
Yes. Sea water is higher density (1025) than fresh (1000) & any floating object displaces the same weight of liquid as the object itself. Weight = volume x density.
Therefore higher density = less volume under water & hence less draft.
If you have ever seen photos of people swimming in the Dead Sea, they seem to be half out of the water, as the Dead Sea is very much higher density even than seawater.
Hope that helps.
Mike
Therefore higher density = less volume under water & hence less draft.
If you have ever seen photos of people swimming in the Dead Sea, they seem to be half out of the water, as the Dead Sea is very much higher density even than seawater.
Hope that helps.
Mike
billcowan
Member
There was a method of calculating the displacement, therefore the total weight of ships, by comparing the waterline in fresh with that of salt. But dont know how its done
dulcibella
Active member
I asked Archie Medes about this and he said Eureka!
Parsonsheath
Active member
Well, I suppose if your best friend cannot tell you, then who can?
Suggest either fresh or salt water with a few cap fulls of Bilgex should solve your personal problems and improve the quality of your life?
Suggest either fresh or salt water with a few cap fulls of Bilgex should solve your personal problems and improve the quality of your life?
