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Saltwater vs freshwater speed

R

Rdavis0207

Well-Known Member
Messages
26
Reaction score
7
Points
62
Boat Make
Yamaha
Year
2008
Boat Model
SX
Boat Length
23
I noticed that I tend to hit and extra couple mph in salt water than I do in the lake. Could this be the density of the saltwater or just currents? Just curious. The small lake I use is always smooth as glass vs the the bay but I always seem to hit 50mph on gps vs 46-47 on the lake .
 
Colder water is denser. Salt water is denser than fresh. The current will play a role. Also if the water is glassy smooth there is more surface tension than water that is not. Some have said it gives 1-2 mph.
 
Objects are more buoyant in salt water but you could be calculating the tidal current while in salt water.
 
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