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Old 26-05-2015, 19:17   #1
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Blisters on my bottom?

Ok....not my bottom per say, but the bottom of a vessel I'm considering. Anyone ever seen anything like this? They seem to rub off, but leave little cracks radiating out from the center of the splotch. I don't think they go into the laminate, but tough to tell without a little invasive noodling.
Thanks!
doo

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Old 26-05-2015, 19:53   #2
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Re: Blisters on my bottom?

Many articles on blisters on the web. Most, but not all older boat will to some extent of blister.
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Old 05-06-2015, 08:33   #3
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Re: Blisters on my bottom?

Quote:
Originally Posted by scubadoo View Post
Ok....not my bottom per say, but the bottom of a vessel I'm considering. Anyone ever seen anything like this? They seem to rub off, but leave little cracks radiating out from the center of the splotch. I don't think they go into the laminate, but tough to tell without a little invasive noodling.
Thanks!
doo


Check out the recent thread - A bazillion blisters, will they get worse. Folks have posted some good info there.


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Old 05-06-2015, 09:36   #4
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Re: Blisters on my bottom?

Quote:
Originally Posted by scubadoo View Post
Ok....not my bottom per say, but the bottom of a vessel I'm considering. Anyone ever seen anything like this? They seem to rub off, but leave little cracks radiating out from the center of the splotch. I don't think they go into the laminate, but tough to tell without a little invasive noodling.
Thanks!
doo

It is quite hard to tell from this photo but those almost look organic, like lichens or similar. Are you sure they are originating from within the hull?
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Old 05-06-2015, 10:06   #5
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Re: Blisters on my bottom?

Looks like blisters to me.

Ask minaret to be sure.
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Old 05-06-2015, 10:09   #6
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Re: Blisters on my bottom?

Scrape one off with a pocket knife or chisel, then post a close up.
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Old 05-06-2015, 12:33   #7
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Re: Blisters on my bottom?

Looks like barnacles ? Need a really close picture I copied and blew up but it was to distorted.
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Old 05-06-2015, 12:43   #8
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Re: Blisters on my bottom?

I was thinking barnacles too. Too uniform in size and dark.
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Old 05-06-2015, 12:48   #9
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Re: Blisters on my bottom?

I cant tell. But if those little dark spots in the center are wet they are blisters. Like said, gouge one out and see how deep the wet is. If they are that plentiful thruout... big job.
If they aren't just barnacle residue on the surface? Strange that there are no barnacles on t he rudder though if that...?
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Old 05-06-2015, 12:54   #10
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Re: Blisters on my bottom?

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Originally Posted by Cheechako View Post
I cant tell. But if those little dark spots in the center are wet they are blisters. Like said, gouge one out and see how deep the wet is. If they are that plentiful thruout... big job.
If they aren't just barnacle residue on the surface? Strange that there are no barnacles on t he rudder though if that...?
Good point, though the rudder seems to have more residual antifoul. It rather looks as if the antifoul had been left to degenerate and was pretty much completely ablated on the hull. Anyhow, we'll see if the OP provides closer and better photos and info.
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