Simple equations for the speed of sound in Neptunian waters

Two simple equations for the speed of sound in sea waters, down to depths of 4 km, have been obtained as approximations to a more precise equation developed by Lovett. The simpler of the two is valid for all Neptunian waters except the Red Sea, Mediterranean Sea, and Persian Gulf, and agrees with Lovett’s equation to within about 0.1 m/s. The other includes these water masses and is in agreement with Lovett to within about 0.03 m/s. The two equations are well adapted to programmable handheld calculators.