View Full Version : Aluminum Pitting at Odell Lake
In talking with Vance of Vance Tackle a few months ago he told of a friend of his that spent a week at Odell and his aluminum boat got some severe pitting from the water, he blamed it on an algae bloom.
The first of the month we were at odell, boat in the water for three days and I also having pitting on the sides below the water line.
I have never experienced this problem at any other lake. Has anyone else had this happen and/or can shed some light on the cause?:anyone:
StickFish
06-23-2008, 02:47 PM
Which morrage? Sounds like there is one hot boat in the lake, or maybe a bad pump going into or out of the lake
We were at Shelter Cove Resort.
StickFish
06-23-2008, 03:01 PM
usually a sign of a hot boat which is an electrical issue more learned can tell you about. First thing I'd look at is my zincs, if the aluminum on your boat was pitting they should have been eaten first. I'd also take a look at your motors lower unit or outdrive. I'd also call Shelter Cove, they will probably want to know
Yes, electrolysis, not algae in the water
CRD4Liberty
06-24-2008, 07:50 AM
If the zincs are good than it sounds like you may have a bonding issue I'd think. The electrical hull ground and the zincs aren't electrically bonded together.
When I was in the Coast Guard one of the 41 footers at Neah Bay came back from the yards after a new bottom paint job with a hot streak through the paint when they pulled it out of the water back home. The isolation transformer for the shore power wasn't correctly bonded after some repairs and they had less than a half volt of stray voltage but it was enough to smoke the paint job in just 2 days.
foxer
06-24-2008, 12:42 PM
I had a similar issue on my Thunderjet after a couple days of moorage at Diamond Lake last year. When I pulled the boat out I could see where the water line was. No pitting, but it definately colored the aluminum.
Reel Knotty
06-24-2008, 01:02 PM
In talking with Vance of Vance Tackle a few months ago he told of a friend of his that spent a week at Odell and his aluminum boat got some severe pitting from the water, he blamed it on an algae bloom.
The first of the month we were at odell, boat in the water for three days and I also having pitting on the sides below the water line.
I have never experienced this problem at any other lake. Has anyone else had this happen and/or can shed some light on the cause?:anyone:
What dock where you moored at? I am at Odell right now...
Steelie28
06-24-2008, 01:20 PM
We were at Shelter Cove Resort.
Even more specifically, dock F, slip 15.
lurking_out_loud
06-24-2008, 02:28 PM
"If the zincs are good than it sounds like you may have a bonding issue I'd think. The electrical hull ground and the zincs aren't electrically bonded together."
I agree, check to ensure that your batteries are NOT connected to your hull in any way and that your electrical system is "floating" ground like it should. What this sounds like is your hull had become part of the marinas electrical system and was the least noble metal in the loop. A hot marina with a battery to hull bond will cause this type of damage in very short order.
You may have even been moored next to a boat that was wired incorrectly as well. If you have a short or fault in your system, your boat may take the brunt of the damage.
Good luck. PM me if you have questions on how to check your boat.
-lol
fishkisser
06-24-2008, 04:21 PM
Unless your motors are completely isolated from your hull in some way ...
Your hull will have somewhat of a bond through the bolts on a outboard or motor mounts on a inboard on an aluminum hull ...
Grab your ohm meter and see for yourself ...
I would bet on a very hot boat or Hot marina ...:twocents:
foxer
06-25-2008, 02:17 AM
I had previously checked my hull after reading a post on "hot boats". It read fine.
lurking_out_loud
06-25-2008, 02:24 PM
[quote=fishkisser;2063977]Unless your motors are completely isolated from your hull in some way ...
Your hull will have somewhat of a bond through the bolts on a outboard or motor mounts on a inboard on an aluminum hull ...
Grab your ohm meter and see for yourself ...
And that kids is why people tilt their motors all the way up when mooring.
-lol
Reel Knotty
07-01-2008, 07:39 PM
Even more specifically, dock F, slip 15.
As I recall, G dock is the only dock there with power, so must be a very hot boat nearby, or a bonding issue.
Pulled mine out and came home today. No sign of any such issues on my boat. I was on I dock.
LOL: I know a lot of guys up there keep their motors in the water because of freezing conditions at night. Less of a problem in June, but I did scrape ice off my boat twice the last two weeks.
Two Fister
07-01-2008, 09:45 PM
RK,
Fallriverguy and I saw you out there on Saturday. We were in FRGs Smokercraft Stinger and showed up in the mid-afternoon after fishing Crescent in the AM. We were a bit closer to the resort and I could just barely make out "Miss Audrey" on the side of your boat as we were headed in. I even commented to FRG that I thought there might be a few ifishers over there. We were trying to avoid the formation of an Artic Wife Front so we we were on a bit of a mission to get back to the barn. We managed a couple right off the bat trolling deep and then we got a few jigging. We'll make a point of saying hi next time.
TF
Reel Knotty
07-02-2008, 12:54 PM
RK,
Fallriverguy and I saw you out there on Saturday. We were in FRGs Smokercraft Stinger and showed up in the mid-afternoon after fishing Crescent in the AM. We were a bit closer to the resort and I could just barely make out "Miss Audrey" on the side of your boat as we were headed in. I even commented to FRG that I thought there might be a few ifishers over there. We were trying to avoid the formation of an Artic Wife Front so we we were on a bit of a mission to get back to the barn. We managed a couple right off the bat trolling deep and then we got a few jigging. We'll make a point of saying hi next time.
TF
TF, I understand the need to get back to the barn to avoid an unwelcomed cold front :D
If I remember right, I jigged in the morning and trolled the afternoon. We did so-so, picking up 16 or so. The bite had really died off from earlier in the week. Was a nice day, however!
How was Crescent?
RK
chucks electric
07-04-2008, 12:45 AM
hello, if the aluminum is pitting that is a sure sign of over protection. what type of metal are the anodes made from?
Dock Holiday
07-04-2008, 01:44 PM
In talking with Vance of Vance Tackle a few months ago he told of a friend of his that spent a week at Odell and his aluminum boat got some severe pitting from the water, he blamed it on an algae bloom.
The first of the month we were at odell, boat in the water for three days and I also having pitting on the sides below the water line.
I have never experienced this problem at any other lake. Has anyone else had this happen and/or can shed some light on the cause?:anyone:
I spent 8 days at Odell Lake and my boat was in the water all the time. No problems here, also look at your zinc placement on your boat, are they in good shape? The algae, I dont think so?:passout: Good luck:twocents:
I have two zincs on the boat/motor. One is a fin shape on the motor itself. The other is a bar bolted to the bottom of the motor mount that is bolted through the transom. There is also a wire running from another part of the motor mount to the bolt that goes through the zinc into the motor mount. Both are in very good shape.
I think I should attach a bar directly to the transom to be safe. I need to find out what is inside my transom to determin the type of bolt/screws to use.
chucks electric
07-04-2008, 06:35 PM
hello, are they magnesium or zinc. magnesium is very light and zinc is quite heavy. magnesium can over protect cast aluminum and the result will be pitting even through paint.
smalldog
07-05-2008, 11:51 AM
He said it was on the hull.
Not cast. Plate.
Please explain how magnizium overprotects.... it is less noble than aluminum and zink is more noble.
Also, how would a more noble material like zink protect aluminum?
Thanks.
fishkisser
07-06-2008, 01:17 PM
This applies to metal boats in saltwater ...
Not quite sure how a hot marina would influence cathodic reactions ???
http://www.kastenmarine.com/mbqCref.pdf
No Reservations
07-06-2008, 05:48 PM
Have you considered what you might have pulled the boat through on the way to the lake most of my pitting on my boat has come from cinders or more likely from what they spray on the roads these days to melt the ice. Chemicals tend to linger on the roads into summer until you get a couple of good spring rain storms to wash it away.
Wes
fishing is life
07-08-2008, 01:08 PM
I have two zincs on the boat/motor. One is a fin shape on the motor itself. The other is a bar bolted to the bottom of the motor mount that is bolted through the transom. There is also a wire running from another part of the motor mount to the bolt that goes through the zinc into the motor mount. Both are in very good shape.
I think I should attach a bar directly to the transom to be safe. I need to find out what is inside my transom to determin the type of bolt/screws to use.
find the zincs that have aluminum wings and have them weld it to the hull. I had bolted on like you and it pitted. Stevens Marine can help you with that.