Cobra fins with boat slipped

[mraz72]

My boat stays slipped from May until October, will the fins corrode if submerged for 6 months?

Although I've gotten used to driving slow speeds, it would be nice to have some help, sounds like they work pretty well.....

 

[Julian]

I'm assuming fresh water.....and no...they won't corrode. @Cobra Jet Steering LLC can comment on what they are made of, but my fins looked better than my pumps when I sold my boat.

 

[davel501]

This is after a couple of seasons of wet slipping. The sticker came off one pair but otherwise they clean right up.

 

[Cobra Jet Steering LLC]

They are aircraft aluminum, for fresh water a good magnesium anode on your pump or ride plate would always be a good idea, newer Yamaha boats have those on the pump and in salt water a zinc anode is correct, I don't believe the boats come with zinc from the factory though so people usually add them to the ride plate or the right side of the pump

 

[0627Devildog]

I wet slipped mine in freshwater for the last 2 seasons for 4-5 months at a clip and they're still in great shape. . .

 

[ruztew]

I bought my 2015 sx190 from a dealer that delivered it with a galvanized trailer and was even test drove in salt water.... would it be safe to assume the anide on the side of the pump is zinc? Is there a visual way to tell the type of anode?

 

[Cobra Jet Steering LLC]

I checked them and I have only found magnesium from the factory so remove it and look for the sticker on the back however if it is not heavy it is not zinc, magnesium is very lite like aluminum zinc is heavy like lead

 

[2nazt]

I didn't know there was a difference. Guess I will be looking flip swap on my boat soon! Oops hope I didn't cause any harm.