Steel boat in freshwater, France, Which antifouling paint ?

G

GrumpyOldGit

Well-Known Member
Joined
30 Oct 2011
Messages
777
Location
Brightlingsea, jewel of the East Coast
Visit site
As the title suggests, I have a steel boat in fresh water ( French canals ) and seem to have done ok with Hempel eroding for the last season. Question is, can anyone recommend something more efficient for the environment ?

Obviously it needs to be bought in the UK as getting stuff in France can be tortuous to say the least. Thanks in advance !
 
Antifouling paint is almost unnecessary in fresh water. Moving the boat into fresh water from seawater, for example the dock at Port Dinorwic, has long been known to be a very efficient way of cleaning the hull. When we kept our boat in fresh water in Holland the most we ever saw was a bit of slime, not worth worrying about. We used hard scrubbable, just a thin coat each year.
 
vyv_cox said:
Antifouling paint is almost unnecessary in fresh water. Moving the boat into fresh water from seawater, for example the dock at Port Dinorwic, has long been known to be a very efficient way of cleaning the hull. When we kept our boat in fresh water in Holland the most we ever saw was a bit of slime, not worth worrying about. We used hard scrubbable, just a thin coat each year.
Click to expand...

My experience also, keeping a boat above the barrage on the Vilaine.
 
KellysEye said:
With a steel boat be careful if you end up in a mix of fresh and salt water, it creates electricity and causes crevice corrosion. Because of that a galvanic isolator was fitted on the earth wire for the 12v and 240v supply on our steel ketch. Electricity/mixing fresh and salt is here: http://physicsbuzz.physicscentral.com/2009/07/electricity-from-salty-water.html
Click to expand...

You have raised this nonsense issue many times. Suggest you read it rather more carefully, it doesn't apply in any circumstances that might apply to boat users and it most definitely has nothing to do with crevice corrosion.
 
>You have raised this nonsense issue many times. Suggest you read it rather more carefully, it doesn't apply in any circumstances that might apply to boat users and it most definitely has nothing to do with crevice corrosion.

I meant to say stray current corrosion not crevice corrosion which can also happen the if marina 240 earth is faulty. If you still don't believe stray current corrosion exists please explain this. Lagos Marina in Portugal is in a river close to the sea where salt and fresh water mix, we know two boats whose props were destoyed by it. If you don't' believe that get a large container and put two wires in it attached to bulb then mix salt and fresh water and let us know what happens. Or if you are worried about posting that you are wrong just watch this https://www.youtube.com/watch?v=ODbgKXFED5oa
 
KellysEye said:
>You have raised this nonsense issue many times. Suggest you read it rather more carefully, it doesn't apply in any circumstances that might apply to boat users and it most definitely has nothing to do with crevice corrosion.

I meant to say stray current corrosion not crevice corrosion which can also happen the if marina 240 earth is faulty. If you still don't believe stray current corrosion exists please explain this. Lagos Marina in Portugal is in a river close to the sea where salt and fresh water mix, we know two boats whose props were destoyed by it. If you don't' believe that get a large container and put two wires in it attached to bulb then mix salt and fresh water and let us know what happens. Or if you are worried about posting that you are wrong just watch this https://www.youtube.com/watch?v=ODbgKXFED5oa
Click to expand...

All the world's power problems are solved then? No need to drill for gas and oil any more, just put nails into seawater.
 
KellysEye said:
I meant to say stray current corrosion not crevice corrosion which can also happen the if marina 240 earth is faulty. If you still don't believe stray current corrosion exists please explain this.
Click to expand...

Let me be sure I've got this right.
1. You say crevice corrosion is the problem.
2. Vyv says it isn't.
3. You say you didn't actually mean crevice corrosion was the issue but something else, and at the same time aggressively criticise Vyv for not knowing what you actually meant.

Did you used to help Monty Python with their scripts, by any chance?
 
KellysEye said:
...f you don't' believe that get a large container and put two wires in it attached to bulb then mix salt and fresh water and let us know what happens. Or if you are worried about posting that you are wrong just watch this https://www.youtube.com/watch?v=ODbgKXFED5oa
Click to expand...
All that is demonstrated by that video is that salt water conducts electricity. Who knew?
 
>No, you don't understand it like Kelly's Eye does. Two nails in a salt solution is generating 500 volts DC. It also destroys propellers, unlike corrosion, which destroys propellers.

Obviously you didn't notice the metal nail was fizzing, have a guess what that may be.
 
You must log in or register to reply here.

Share this page

Top