Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 20-05-2012, 13:58   #1
Registered User
 
Deepdraft's Avatar

Join Date: Mar 2011
Posts: 126
Blisters - Fix or Wait ?

Hi - The photos are the underside and rudder of a an early 70's sailboat. Do I need to be concerned? (looking to purchase, surveyor says not to worry). Thanks.
Attached Thumbnails
Click image for larger version

Name:	image-2365153196.jpg
Views:	236
Size:	152.0 KB
ID:	41285   Click image for larger version

Name:	image-125721728.jpg
Views:	235
Size:	148.4 KB
ID:	41286  

Click image for larger version

Name:	image-2546655692.jpg
Views:	238
Size:	137.7 KB
ID:	41288  
__________________

__________________
Deepdraft is offline   Reply With Quote
Old 20-05-2012, 15:34   #2
Registered User

Join Date: Nov 2005
Posts: 1,156
Re: Blisters - fix or wait?

What I see is a dirty bottom, not blisters. But if there really are blisters, and the boat is still out of the water, you might look for a second opinion, to be sure before buying.

By the way, that is one very strange rudder design.. It appears that the rudder post only extends a couple of inches into the rudder, and that would really concern me. I would not take that boat offshore as is. Did your surveyor comment on that?
__________________

__________________
speedoo is offline   Reply With Quote
Old 20-05-2012, 15:51   #3
Resin Head
 
minaret's Avatar

Cruisers Forum Supporter

Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,199
Images: 52
Re: Blisters - fix or wait?

In the second pic the blisters on the keel look bigger than the transducer next to them! Get a new surveyor quick, whoever this is does not have your best interests at heart. The only way you can tell if there is a problem with osmosis and saturation, and thus potentially hydrolysis, is to remove a patch of bottom paint and get a moisture meter reading. If this surveyor told you those huge blisters are no problem without even bothering to get a reading, you need to fire him ASAP. They will most certainly be a problem, and likely a severely expensive one. Figure in at least 20k for a blister repair job if you buy, in this case maybe more like 30k. Those are huge blisters. Also consider time, if you buy this boat it will likely require at least six months in the yard to get dry. That's at least six months you won't be able to use it. Unless you can find a yard with a hotvac. JMHO.
Stab a blister with an awl and smell what comes out. If it smells sorta sour like vinegar your screwed, there is saturation and hydrolysis present. The bottom will have to be peeled (probably double peeled here), blisters ground out, bottom dried, blisters glassed and faired, whole bottom reglassed to make up double peel, fairing, barrier coat, and bottom paint. It ain't cheap.
__________________
minaret is offline   Reply With Quote
Old 20-05-2012, 16:14   #4
Registered User
 
HappySeagull's Avatar

Join Date: Dec 2010
Location: B.C.,Canada
Boat: 29'
Posts: 2,395
Re: Blisters - fix or wait?

I particularly like this post by Cheechako...Blister Photo & Question

and up and down from that post....
I'd run away.
__________________
HappySeagull is offline   Reply With Quote
Old 20-05-2012, 18:00   #5
Registered User
 
Deepdraft's Avatar

Join Date: Mar 2011
Posts: 126
I am getting conflicting opinions so I'll wait to read the report and see if i get more replies to the thread. No of the rudder stock.. Boat is back in the water. Thanks.
__________________
Deepdraft is offline   Reply With Quote
Old 20-05-2012, 18:05   #6
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,762
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Blisters - fix or wait?

what kind of boat--the blisters donot look serious except in keel--what minaret sed....
btw, speeedo--that is a similar kind of rudder used on many deep water cruisers with full keels. there are other attachment points besides rudder post. they call those attatchments gudgeons and pintles.
zeehag is offline   Reply With Quote
Old 20-05-2012, 18:14   #7
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: Blisters - fix or wait?

Never heard of blisters sinking a boat. You can wait, but they'll just get bigger. The repair is just a lot of work and time consuming in humid climates.
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Old 20-05-2012, 18:17   #8
Registered User
 
Deepdraft's Avatar

Join Date: Mar 2011
Posts: 126
The boat is an Alden 32' Motorsailer, (Cheoy Lee), 1971, encapsulated keel. Thanks.
__________________
Deepdraft is offline   Reply With Quote
Old 20-05-2012, 18:30   #9
Registered User

Join Date: Nov 2005
Posts: 1,156
Re: Blisters - fix or wait?

Quote:
Originally Posted by zeehag View Post
what kind of boat--the blisters donot look serious except in keel--what minaret sed....
btw, speeedo--that is a similar kind of rudder used on many deep water cruisers with full keels. there are other attachment points besides rudder post. they call those attatchments gudgeons and pintles.
Right, I can see there are attachment points holding the rudder to the hull below the prop aperture, and I am very familiar with gudgeons and pintles. My concern is that there is so little attachment between the rudder body and the rudder post, which is the only thing that actually moves the rudder. I think it is a design weakness and I have never seen that in an offshore cruiser before.
__________________
speedoo is offline   Reply With Quote
Old 20-05-2012, 20:36   #10
Moderator Emeritus
 
Ex-Calif's Avatar

Cruisers Forum Supporter

Join Date: May 2007
Location: Singapore
Boat: Maxi 77 - Relax Lah!
Posts: 11,514
Images: 4
Quote:
Originally Posted by Deepdraft
Hi - The photos are the underside and rudder of a an early 70's sailboat. Do I need to be concerned? (looking to purchase, surveyor says not to worry). Thanks.
That is over my personal limit. Your limit may vary and it may depend on boat price.

I would be factoring in a lot of time out of water and multi-boat bucks for a complete bottom peel.

If I owned the boat I would be looking to sell it cheap or save my bucks and fix it. Not an "emergency" but a do soon.
__________________
Relax Lah! is For Sale <--- Click
Click--> Custom CF Google Search or CF Rules
You're gonna need a bigger boat... - Martin Brody
Ex-Calif is offline   Reply With Quote
Old 20-05-2012, 21:01   #11
Marine Service Provider
 
Tony B's Avatar

Join Date: Jul 2011
Location: Presently in Rogersville, Al
Boat: Mainship 36 Dual Cabin
Posts: 695
Re: Blisters - fix or wait?

I wouldnt exactly call those lumps on the bottom of the keel 'blisters'. That lower keel area looks totally waterlogged.
I agree with Minaret. The bottom will have to be peeled and dried for around 6 months before any real work can begin.
Common blisters are the size of a dime. Large blisters are the size of a quarter. And that is on the surface and what you can see. Once you grind into them they can be a lot larger. I'll bet if you popped one with an ice pick lots of goo and water would be coming out.
When it comes to project boats I am a naysayer. Unfortunately for me, it is because of experience.
__________________
Mainship 36 DC - 1986
Retired and Full Time Cruising the Eastern U.S. inland Waterways
www.FreeBoatProjects.com
Tony B is offline   Reply With Quote
Old 21-05-2012, 00:14   #12
Resin Head
 
minaret's Avatar

Cruisers Forum Supporter

Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,199
Images: 52
Re: Blisters - fix or wait?

Quote:
Originally Posted by Deepdraft View Post
The boat is an Alden 32' Motorsailer, (Cheoy Lee), 1971, encapsulated keel. Thanks.


I have seen a number of cases where an encapsulated ballast was imperfectly sealed on the inside of the hull, allowing bilge water to get in and stay trapped there where it can't dry out. This led to severe saturation and blistering of the keel, although the rest of the hull was only moderately damp and blistered. Hard to tell from these pics, but at a glance it looks like it could be such a case.
__________________
minaret is offline   Reply With Quote
Old 21-05-2012, 08:48   #13
Registered User
 
Deepdraft's Avatar

Join Date: Mar 2011
Posts: 126
Thanks to all who replied, I guess I found the deal breaker. Its too bad as I really liked boat, but the repair costs are just too high.
__________________
Deepdraft is offline   Reply With Quote
Old 21-05-2012, 09:17   #14
Marine Service Provider
 
Tony B's Avatar

Join Date: Jul 2011
Location: Presently in Rogersville, Al
Boat: Mainship 36 Dual Cabin
Posts: 695
Re: Blisters - fix or wait?

Dont let it get you down. I had a surveyor go over a boat for me about 4 months ago. Within 12 minutes, he found about $20,000 worth of repairs. We sat down and discussed it. I asked qustions from every angle and he told me to just walk away from it. His logic being -$20K in 12 minutes, how much will it be if he spent all day looking. To have that much extensive damage is from many many years of neglect.
Man, I loved that boat. Sometimes life is just one big kick in the groin, but there are always more boats out there.
Better luck next time.
__________________
Mainship 36 DC - 1986
Retired and Full Time Cruising the Eastern U.S. inland Waterways
www.FreeBoatProjects.com
Tony B is offline   Reply With Quote
Old 21-05-2012, 09:39   #15
Registered User

Join Date: Nov 2005
Posts: 1,156
Re: Blisters - fix or wait?

Quote:
Originally Posted by Deepdraft View Post
Thanks to all who replied, I guess I found the deal breaker. Its too bad as I really liked boat, but the repair costs are just too high.
Do you have a good repair estimate? I think Minaret's last post nails the problem... Improperly sealed encapsulated ballast. The blisters appear to be only at the bottom of the keel, so it's possible the hull is ok.

Repair in that case might not be too bad. But I do think you need a better surveyor.
__________________

__________________
speedoo is offline   Reply With Quote
Reply

Tags
blisters

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 18:09.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.