Mystery boat part

[HTHM]

I found this in my bilge today and have no clue what it is for. 

 

[Fisherman]

Ok, so what are we supposed to look at, the white pail, plastic bag, the black thing with a silver knob end or what?

[HTHM]

Black thing with the silver end. 

[smitty55]

4 hours ago, HTHM said:

Black thing with the silver end. 

Water sensor perhaps, just a wild guess.

[misfish]

6 hours ago, smitty55 said:

Water sensor perhaps, just a wild guess.

Temp probe for live bass

[AKRISONER]

Looks like some kind of temperature sensor

[akaShag]

a rectal probe abandoned by aliens when they visited your boat?  And of course the aliens blank out your memory so you won't recall what happened........

[Podric]

Your boat isn't sinking and you are not wanting for some lost feature so don't worry about it, throw it back in and float on.