boat bottom repair advice needed

[KWKloeber]

IGNORE the fact that Defender used the term ELECTROLYSIS for stray current corrosion.
arrrrgh!
Arrrrrgh!!
AAAARGH!!!!

We are not splitting water into hydrogen/oxygen (electrolysis) with our boats.  At least hope not.

[anaisdog]

good to know. i would have bought zinc, mistakenly . thanks Ken

[anaisdog]

also a LOT of the damage in the pictures was caused by westport marina, in lasalle canada, lifting the boat up with rocks in the bands.  this was before i had the boat.  they are also the reason i need to buy a cradle, the illegally kept the one that came with the boat.

[KWKloeber]

good to know. i would have bought zinc, mistakenly . thanks Ken

Something else I noticed, IIWMB I would have placed the shaft anode further forward.  Just seat-of-the-pants it seems very close to the strut and you want to make sure there's no interference with water flow thru the cutlass bearing (water flowing is the lubricant/coolant.)  I've heard of standards of 3x or 4x the diameter, or 6" from the strut.  Some even put the anode at the hull end of the shaft (supposedly minimizes drag?)  Just keep it away from the center third of the shaft to avoid the anode from introducing shaft whip/vibration.

k

[scgunner]

      Becki,

        When you say they "illegally kept", you mean they stole your cradle?

[Steve_in_lex]

Soda blasting is a great way to remove the existing bottom paint and start with a clean slate.  There are several threads about that in this message board.  In 2014, it cost us $1,700.

Steve

[anaisdog]

scgunner - it's a husband / wife yard.  the wife said, many times, that i could have the cradle for free (this was in september after I bought the boat) .  when my guy got there, with the trailer, the husband said i had to pay them money to load it and the summer storage fee in canadian cash right then, which my guy didn't have.  they would not take a credit card or any other payment and never did the wife state i had to pay them for the time i DIDN'T own the boat. 

and they lifted the boat, at least once, with rocks in the cradle straps. you can see the damage in the bottom paint.

[Jim Hardesty]

Soda blasting is a great way to remove the existing bottom paint and start with a clean slate.

In 2014, it cost us $1,700.

Just want to give a much less costly DIY option.  A couple of club members used a pressure washer with coal grit to remove previous bottom paint.  Looked like it worked well.  Did make a mess but our parking lot / boat storage yard is gravel and the mess was quickly unnoticeable.  They did this in the fall and waited till spring to apply a barrier coat and bottom paint.
Jim

[anaisdog]

thanks. what did they use for the barrier coat?  thanks

[Noah]

Becki- this blog post on "blasting" may be helpful
http://cleanedbypete.blogspot.com/2013/05/sand-or-coal-slag-for-media-blasting.html?m=1

[KWKloeber]

Becki- this blog post on "blasting" may be helpful
http://cleanedbypete.blogspot.com/2013/05/sand-or-coal-slag-for-media-blasting.html?m=1

Mercy that post makes my eyeballs hurt. I wish I could edit and do a spell check for cleaner peter.

What's the roules on blasting and haveing to captchure runnoff? Only if their's runoff that gos directly to an waterway?  Not if it percelates into gravell?  I know that some yards have really clampped duun on DIY bottom wurk.  Lickily my yard is opan 6 days a weak, closed Mundays (if you get my dreft.) ~~~~~~

k

[scgunner]

       Becki,

          You need to find a new yard. It sounds like yard policy is based on the mood they're in that day, and they don't even seem to be in agreement with each other. I'd get my boat out of there pronto.

[scgunner]

    Jim,

      If you tried that in the Peoples Republic of California you'd wind up in jail.

[anaisdog]

oh, i never stored with westport marina, the PO did.  i am at edison boat club

[scgunner]

      Smart move!