The Fishing Website : Discussion Forums : Electrolysis

The Fishing Website : Discussion Forums : Electrolysis - what to look for? https://www.fishing.net.nz/forum/ Mon, 01 Jun 2026 06:14:09 +0000 Thu, 18 Dec 2014 09:46:52 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.01 360 https://www.fishing.net.nz/forum/RSS_post_feed.asp?TID=106009 <![CDATA[The Fishing Website : Discussion Forums]]> https://www.fishing.net.nz/forum/forum_images/web_wiz_forums.png https://www.fishing.net.nz/forum/ <![CDATA[Electrolysis - what to look for? : If you do cook your alloy boat...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1513628&title=electrolysis-what-to-look-for#1513628 Author: Don18025
Subject: 106009
Posted: 18 Dec 2014 at 9:46am

If you do cook your alloy boat with electrolysis they are easy to recycle by the scrap metal guys.

If you own a wooden or glass hull, then electroloysis is mainly going to attack your engine.

Electrolysis can damage wooden hulls at skin fittings and fastenings but those hulls have been in the water for a very long time.

]]> Thu, 18 Dec 2014 09:46:52 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1513628&title=electrolysis-what-to-look-for#1513628 <![CDATA[Electrolysis - what to look for? : Just don't have two-pot foam...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1513282&title=electrolysis-what-to-look-for#1513282 Author: MikeAqua
Subject: 106009
Posted: 17 Dec 2014 at 10:34am

Just don't have two-pot foam in a wet or potentially wet area in an alloy boat - or you will need it. Even 'closed cell' foam holds some moisture.

Note my boat was 12 years old at that point and was used >100 days per year. The foam had been in for ~5 years.

That was all 15 years ago and no recurrences.
]]> Wed, 17 Dec 2014 10:34:06 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1513282&title=electrolysis-what-to-look-for#1513282 <![CDATA[Electrolysis - what to look for? : Geez Mike Aqua think I will keep...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512943&title=electrolysis-what-to-look-for#1512943 Author: MacSkipper
Subject: 106009
Posted: 16 Dec 2014 at 11:46am

Geez Mike Aqua think I will keep my plastic boat after all....]]> Tue, 16 Dec 2014 11:46:01 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512943&title=electrolysis-what-to-look-for#1512943 <![CDATA[Electrolysis - what to look for? : I forgot to add that I had electrolysis...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512909&title=electrolysis-what-to-look-for#1512909 Author: MikeAqua
Subject: 106009
Posted: 16 Dec 2014 at 10:30am

I forgot to add that I had electrolysis in my boat. It was caused by buoyancy foam inside the hull and presumably some leaky electrics. The foam was retaining a small amount of moisture, and presumably the electricity was forcing electrolysis. It's also possible that the foam mix was slighty acidic, and this was enough to drive the electrolysis in the absence of electrical current.

I stripped all the electrics, blasted all the foam out of the boat, acid washed and rinsed the hull twice and redid all the electrics. I was very careful to isolate all the electrics from the hull. No problems since then.
]]> Tue, 16 Dec 2014 10:30:21 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512909&title=electrolysis-what-to-look-for#1512909 <![CDATA[Electrolysis - what to look for? : dont wire them to the boat,use...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512904&title=electrolysis-what-to-look-for#1512904 Author: Lethal
Subject: 106009
Posted: 16 Dec 2014 at 10:28am

dont wire them to the boat,
use a baz bar to attach your wires to and use silicon or rubber washers or even both between hull when bolting any stainless steel to your hull,

how to use a Buz bar, you will need two of them, one Positive and one Earth,
run your Positive and Earth from your battery to a Buz bar and all your wire is attached from here to what ever your likely to run...
name each wire with what it is attached to, run the fuse between the Buz Bar and what ever your running,
can make for quick repairs and peace of mind, helps when it comes to resale as well...

]]> Tue, 16 Dec 2014 10:28:39 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512904&title=electrolysis-what-to-look-for#1512904 <![CDATA[Electrolysis - what to look for? : I use a battery switch - isolates...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512897&title=electrolysis-what-to-look-for#1512897 Author: MacSkipper
Subject: 106009
Posted: 16 Dec 2014 at 10:20am

I use a battery switch - isolates battery from electrics when boat stored - means no possibility of stray currents while boat stored and should help keep battery alive as well.

I would have thought outboard main cause as dissimilar metals to aluminium boat - should outboard be grounded to boat and anode on boat as well - to cover off when in water?]]> Tue, 16 Dec 2014 10:20:29 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512897&title=electrolysis-what-to-look-for#1512897 <![CDATA[Electrolysis - what to look for? : It's important to differentiate...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512894&title=electrolysis-what-to-look-for#1512894 Author: MikeAqua
Subject: 106009
Posted: 16 Dec 2014 at 10:17am

It's important to differentiate between electrolysis and galvanic corrosion.

Galvanic corrosion happens when two metals/alloys with different reactivity are in contact in a liquid that conducts electricity well (e.g. seawater). This causes the most reactive metal to oxidise. Aluminium and it's alloys are quite reactive. Screw and stainless bolt into ally and you will get galvanic corrosion of the adjacent alloy. To avoid you use plastic screws/bolts if you can or use an isolating compound like duralac.

Electrolysis occurs when electric potential exists between dissimilar metals. Electrolysis can occur spontaneously, generating a current or it can be forced by an electrical current. In an alloy boat it can be forced by current from the DC system finding it's way into the hull. Things that help in trailer boats include: -
- Fitting isolating switches to batteries,
- Fitting rubber/plastic mats under batteries,
- Checking bus bars, fuse blocks, switches cables to ensure nothing is leaking into the hull.
- Removing batteries when the boat is not being used.
- Keeping the boat dry when not in use.

In moored boats, you need anodes.
]]> Tue, 16 Dec 2014 10:17:30 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512894&title=electrolysis-what-to-look-for#1512894 <![CDATA[Electrolysis - what to look for? : Ok so for a smaller runabout or...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512885&title=electrolysis-what-to-look-for#1512885 Author: FizFisho
Subject: 106009
Posted: 16 Dec 2014 at 10:03am

Ok so for a smaller runabout or dinghy (fc430, f14 etc). What are the main sources of electrolisys?

1. Fish finder

2. Radio

3. GPS

4. Music

etc

What else?

Now can these items be wired so its nie on impossible for them to cause electrolisys? (forgetting degradation to wiring etc)

]]> Tue, 16 Dec 2014 10:03:49 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512885&title=electrolysis-what-to-look-for#1512885 <![CDATA[Electrolysis - what to look for? : Trailers...Im pretty sure the...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512868&title=electrolysis-what-to-look-for#1512868 Author: Steps
Subject: 106009
Posted: 16 Dec 2014 at 9:20am

Trailers...
Im pretty sure the open end box section trailer we have is the original for the old sea nymph commander... and just about every other SN C has the same trailer.Other than replaced mud gaurd brackets that get the surface rust kill, seal attention about 2 times a yr its and most the other mint.
Im sure not all have been well looked after over the decades.
So what is the difference between these and all those rusty trailers around it at the ramp?

Even going on trade me.. look up S N C and check out the pics/ trailers....most same trailer, old and in damn good knick.

Also late sixties/ early 70s American Chev muscle cars had a sacrificial anode mount up in the rear back passengers pillar frame between the frame and outer skin....Outside this period or muscle car I dont know if did or not.
]]> Tue, 16 Dec 2014 09:20:19 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512868&title=electrolysis-what-to-look-for#1512868 <![CDATA[Electrolysis - what to look for? : Next time I go to the barn I...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512845&title=electrolysis-what-to-look-for#1512845 Author: Garry 23041
Subject: 106009
Posted: 16 Dec 2014 at 8:43am

Next time I go to the barn I will take some snaps.

It's raining and blowing here and it seems so very hard to go outside.

Trailers are temporay at best wouldn't you say.......

I was interested to read on here the other day that some are sealing the box sections with lindseed oil in them to preserve the structure you can't see.

Sounds interesting.

]]> Tue, 16 Dec 2014 08:43:23 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=106009&PID=1512845&title=electrolysis-what-to-look-for#1512845