Can someone tell me what this is?

[SardineNibbler]

I just bought this 1993 Alumacraft Crappie Deluxe SS. I am redoing this inside and seen the wires to this that are not connected to anything and was wondering what exactly it is! Thank you!

 

[Txzuki523]

Water speed sensor, i believe.

 

[GA_Boater]

Speedometer paddle wheel.