Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 19-09-2015, 12:40   #1
Registered User
 
VinnyVincent's Avatar

Join Date: Nov 2014
Location: Kemah TX
Boat: Newport 28
Posts: 331
Concrete in my Bilge?

Or some kind of thickened epoxy?
My owners manual says the keel bolts were sealed with resin...but this stuff really resembles concrete...also why leave such asloppy unfinished look?

I will post pics soon, but i was wondering if this was common...
__________________

__________________
VinnyVincent is offline   Reply With Quote
Old 20-09-2015, 07:44   #2
Registered User
 
VinnyVincent's Avatar

Join Date: Nov 2014
Location: Kemah TX
Boat: Newport 28
Posts: 331
Re: concrete in my bilge?

__________________

__________________
VinnyVincent is offline   Reply With Quote
Old 20-09-2015, 10:03   #3
Moderator
 
Don C L's Avatar

Join Date: Sep 2014
Location: Channel Islands, CA
Boat: 1962 Columbia 29 MK 1 #37
Posts: 4,395
Images: 34
Re: concrete in my bilge?

Quote:
Originally Posted by VinnyVincent View Post
The keel bolts are covered with that stuff? What happens if you hit it with a chisel? (Which you may want to do quite a bit of...)
__________________
DL
Pythagoras
1962 Columbia 29 MKI #37
Don C L is offline   Reply With Quote
Old 20-09-2015, 10:31   #4
Registered User
 
VinnyVincent's Avatar

Join Date: Nov 2014
Location: Kemah TX
Boat: Newport 28
Posts: 331
Re: concrete in my bilge?

The keel bolts were covered at the factory according to the manual. What seems off is that it is not finished. Looks like it was poured and left as-is. I will try the chisel and report back
__________________
VinnyVincent is offline   Reply With Quote
Old 20-09-2015, 12:49   #5
Registered User
 
VinnyVincent's Avatar

Join Date: Nov 2014
Location: Kemah TX
Boat: Newport 28
Posts: 331
Re: concrete in my bilge?

Okay i chiseled a piece off. It's not concrete. If you drop it onto a hard surface, it sounds like rubber/plastic so I am thinking it is thickened resin of some kind. Has anyone seen this before?
__________________
VinnyVincent is offline   Reply With Quote
Old 20-09-2015, 19:11   #6
Registered User
 
Orion Jim's Avatar

Join Date: Dec 2008
Location: Noank, Ct. USA
Boat: Cape Dory 31
Posts: 1,075
Images: 6
Re: concrete in my bilge?

Nope. Why obscure keel bolts? Kind of odd.
__________________
Orion Jim is offline   Reply With Quote
Old 20-09-2015, 20:27   #7
Registered User
 
Snowpetrel's Avatar

Join Date: Jul 2012
Location: Hobart
Boat: Alloy Peterson 40
Posts: 3,071
Re: Concrete in my Bilge?

Some of the Early j boats used a vermisculite mix in the bilges. I think it might of had a small quantity of asbestos in it as well so be carefull. Google J24 vermisculite should give you a bit of info.

Sent from my HTC_0PCV2 using Cruisers Sailing Forum mobile app
__________________
My Ramblings
Snowpetrel is offline   Reply With Quote
Old 20-09-2015, 21:10   #8
Moderator
 
Don C L's Avatar

Join Date: Sep 2014
Location: Channel Islands, CA
Boat: 1962 Columbia 29 MK 1 #37
Posts: 4,395
Images: 34
Re: Concrete in my Bilge?

Personally, I'd keep chiseling at least to get a good look at the keel bolts. Wear a respirator (I didn't know about the asbestos!) and double bag all the bits. I am really curious, send more pics of whatever you decide to do. I have not seen this stuff but it looks like SnowPetrel is right, vermiculite, now after googling it.
__________________
DL
Pythagoras
1962 Columbia 29 MKI #37
Don C L is offline   Reply With Quote
Old 21-09-2015, 08:20   #9
Registered User
 
VinnyVincent's Avatar

Join Date: Nov 2014
Location: Kemah TX
Boat: Newport 28
Posts: 331
Re: Concrete in my Bilge?

Here's what the owners manual says:

Quote:
The ballast on Newport Boats is a solid lead and alloy keel. The galvanized iron keel bolts are permanently locked in place by positioning them in the keel at the time it is poured. An epoxy adhesive is applied to the top of the keel before it is bolted to the keel recess in the hull. A fiberglass cloth is bonded over the entire joined area to further seal it. A resin and asbestos mixture is poured into the keel recess and allowed to harden. The covered keel bolts and their nuts are now permanently locked and insured of never having water come in contact with them.
The area of the hull to keel joint and the entire keel is now coated with micro-balloons, a resin based fairing agent. The whole area is then ground smooth and more micro-balloons are applied to any hollow spots. This process is repeated until the entire installation is smooth and uniform. It is then sanded and ready for bottom paint.
If that was done at the factory, it is some extremely shoddy work... I just can't believe they wouldn't even take the time to smooth it out. It's not even close to being level.

I got that crap all over my hands when smoothing it out too...right before smoking to boot
__________________
VinnyVincent is offline   Reply With Quote
Old 21-09-2015, 08:27   #10
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,152
Re: Concrete in my Bilge?

Try a strong acid on a sample...like a little battery acid. Concrete will bubble and dissolve, epoxy will not react.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 21-09-2015, 08:36   #11
Registered User
 
leftbrainstuff's Avatar

Join Date: May 2011
Location: San Francisco and Australia
Boat: Liberty 458
Posts: 1,979
Re: Concrete in my Bilge?

Quote:
Originally Posted by VinnyVincent View Post
Here's what the owners manual says:



If that was done at the factory, it is some extremely shoddy work... I just can't believe they wouldn't even take the time to smooth it out. It's not even close to being level.

I got that crap all over my hands when smoothing it out too...right before smoking to boot
'Insured'. Interesting choice of words...

Sent from my SM-N900T using Cruisers Sailing Forum mobile app
__________________
leftbrainstuff is offline   Reply With Quote
Old 21-09-2015, 09:04   #12
Registered User
 
VinnyVincent's Avatar

Join Date: Nov 2014
Location: Kemah TX
Boat: Newport 28
Posts: 331
Re: Concrete in my Bilge?

Quote:
Originally Posted by leftbrainstuff View Post
'Insured'. Interesting choice of words...

Sent from my SM-N900T using Cruisers Sailing Forum mobile app
You'll have to help me out here, because I seem to have just started my career in boat repair...

I'm am assuming that if the keel takes a good hit, it can/will crack near the bolts, thus allowing water to get in around them, subsequently making them corrode even faster since they are sealed away for oxygen?
__________________
VinnyVincent is offline   Reply With Quote
Old 21-09-2015, 09:44   #13
Registered User
 
VinnyVincent's Avatar

Join Date: Nov 2014
Location: Kemah TX
Boat: Newport 28
Posts: 331
Re: Concrete in my Bilge?

Quote:
Originally Posted by Don C L View Post
Personally, I'd keep chiseling at least to get a good look at the keel bolts. Wear a respirator (I didn't know about the asbestos!) and double bag all the bits. I am really curious, send more pics of whatever you decide to do. I have not seen this stuff but it looks like SnowPetrel is right, vermiculite, now after googling it.
I am away from my boat right now, but did get another pic right before I left yesterday.

Yes, I know it's filthy and this was AFTER giving it a good scrub down and rinse...I had a whole laundry list of other things I have been repairing. Honestly I should've tackled this sooner it wasn't as dirty as I thought(the dirty "concrete" actually appeared to be a massive sludge build up until I got in there and cleaned the layer of black stuff off the top)

__________________

__________________
VinnyVincent is offline   Reply With Quote
Reply

Tags
bilge

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Canadian Yacht Made from Concrete - Formerly the 'Concretia' morans Pacific & South China Sea 13 21-12-2014 02:23
Removing Concrete Ballast dandreadnought Construction, Maintenance & Refit 46 14-02-2013 03:59
World's Largest concrete ship to be dismantled after 30 years Christerart General Sailing Forum 3 21-11-2012 14:45
Concrete Hull edinwheels73 General Sailing Forum 3 17-09-2012 12:25
Concrete Countertops on a Boat ? Deep6 Construction, Maintenance & Refit 34 13-03-2011 21:55



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 10:29.


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.