Google wasn't feeling very helpful, so I will probably go home this weekend and to the experiments myself, but until then I'm curious to hear you guys' predictions of the effect on an inductor by being submerged in water. I have a growing curiosity with using springs as a position feedback mechanism by measuring the change in inductance as they stretch. Products such as TI's LDC1000 seem to make it easy. But what if your application is subsea? Assuming you coat the spring and the electrical terminations with an insulator to prevent current flow through the water, to what degree will the water itself induce eddy currents and change the inductance? My gut says the effect would be negligible, but that might just be wishful thinking.