Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 14-08-2012, 04:15   #1
Registered User
 
awab's Avatar

Join Date: Jun 2012
Location: Italy
Boat: s&s, motorsailor, 55 feet
Posts: 94
Wood Hull Repair Toredo Worm

dear readers
I have since 12 years AWAB a 1958 s&s motorsailor.

Awab is build traditional honduras mahogani planking over white oak and teak decks.
I been lucky to have no major problem with the famous worm till now.
The boat is hulled out since 3 month and now I have to get started with my repairs.
On several spots I see the typically holes of the intruder.
In the meantime the toredo should be death.

Now the question.
I think there is no need yet to replace the invested planks but what is the best system to repair the wood and close the holes.

I been already thinking to cut with a circular saw stripes half the debt of the plank and fill the gaps with a kind of epoxy.

For your experience I would be thank full,

peter
__________________

__________________
awab is offline   Reply With Quote
Old 14-08-2012, 09:32   #2
Resin Head
 
minaret's Avatar

Cruisers Forum Supporter

Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,198
Images: 52
Re: wood hull repair toredo worm

Toredo and Gribble eat the planking from the inside out. I have seen many a plank with only a few entry holes, but if you resaw the plank on a bandsaw you will see that the interior of the plank is just a mass of worm holes. I would pull a plank to check how bad it is. Many people think they have no problem with the worm until they spring a butt block...
__________________

__________________
minaret is offline   Reply With Quote
Old 14-08-2012, 09:47   #3
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: 17,761
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: wood hull repair toredo worm

i would do as minaret suggests--replace involved planks so you dont get that sinking feeling.
zeehag is offline   Reply With Quote
Old 14-08-2012, 10:34   #4
Registered User
 
bruce smith's Avatar

Join Date: Jul 2008
Location: puget sound/ caribbean
Boat: never wrecked a boat while awake or sober
Posts: 330
Re: wood hull repair toredo worm

repair it properly
the time for epoxy was 12 years ago . epoxy makes an effective worm barrier by simply painting on the bare wood, but there is no miracle kerfing technique once the damage is done.
worm damage is a terrible thing
__________________
bruce smith is offline   Reply With Quote
Old 15-08-2012, 13:56   #5
Registered User

Join Date: Jul 2012
Location: Mallacoota - SE Australia
Boat: 1950's Lakes Cruiser
Posts: 82
Re: wood hull repair toredo worm

My boat has a sacrificial keel and on the last slip it was riddled with worm holes. Found of the critters - I cut most of the old wood out and replaced it with new wood - only concern is do these worms eat through anti foul paint or through marine sealant - MVR
__________________
MV-Romnya is offline   Reply With Quote
Old 15-08-2012, 14:28   #6
Registered User
 
bruce smith's Avatar

Join Date: Jul 2008
Location: puget sound/ caribbean
Boat: never wrecked a boat while awake or sober
Posts: 330
Re: wood hull repair toredo worm

anti foul paint is a worm barrier, but a poor one.
A thick build up of anti fouling is not a desirable thing in general .
A thin build up of anti fouling is better for speed and fairness and is less apt to flake off in chunks, but a scratch or ding may expose new food , I mean wood, to the wee beasties.
Thus, my earlier bit about epoxy.
My fir planked vessel has been in and out of wormy waters, (where are there not worms?), and sometimes been without a haulout for extended periods, but never had a worm or gribble.
Red lead does the same thing, but is harder to obtain and probably more dangerous ( to humans) than epoxy.
__________________
bruce smith is offline   Reply With Quote
Old 15-08-2012, 14:48   #7
Resin Head
 
minaret's Avatar

Cruisers Forum Supporter

Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,198
Images: 52
Re: wood hull repair toredo worm

This is what copper sheathing is all about. It's not done because it provides good anti fouling, because it doesn't. It is however the ultimate worm barrier...
__________________
minaret is offline   Reply With Quote
Old 15-08-2012, 14:52   #8
Registered User
 
bruce smith's Avatar

Join Date: Jul 2008
Location: puget sound/ caribbean
Boat: never wrecked a boat while awake or sober
Posts: 330
Re: wood hull repair toredo worm

copper sheathing will cost 10 times what epoxy will and will slow any small vessel down quite a bit. it is very un smooth
__________________
bruce smith is offline   Reply With Quote
Old 15-08-2012, 15:03   #9
Resin Head
 
minaret's Avatar

Cruisers Forum Supporter

Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,198
Images: 52
Re: wood hull repair toredo worm

Quote:
Originally Posted by bruce smith View Post
copper sheathing will cost 10 times what epoxy will and will slow any small vessel down quite a bit. it is very un smooth


You get what you pay for. Epoxy coating inevitably cracks around the plank seams as the boat works, thus totally defeating the purpose. Just one of the reasons no pro yard does that. The tiny seams on a pro copper job won't slow a boat at all, that's ridiculous.
__________________
minaret is offline   Reply With Quote
Old 15-08-2012, 15:08   #10
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,114
Re: wood hull repair toredo worm

Quote:
Originally Posted by bruce smith View Post
copper sheathing will cost 10 times what epoxy will and will slow any small vessel down quite a bit. it is very un smooth
Not sure about 10 times the price. Guess that depends somewhat on what fabric you use with the liquid. Copper cladding is time consuming, but this also depends on the shape of the boat bottom.
In the 60s, regularly worked on copper cladding 62ft Royal Navy pinnaces.
Thinking back, it was satisfying work to do.
Agree with Minaret, it can be gotten pretty fair.if planned out.
__________________
so many projects--so little time !!
Blue Stocking is offline   Reply With Quote
Old 15-08-2012, 15:56   #11
Registered User
 
bruce smith's Avatar

Join Date: Jul 2008
Location: puget sound/ caribbean
Boat: never wrecked a boat while awake or sober
Posts: 330
Re: wood hull repair toredo worm

Seams crack as boats dry out , not as they work, and we are talking about bottom seams.
Depends on the construction of course, but many boats can just paint it on , no cloth nessessary.
labor IS the most expensive material on a boat, but I am talking about a gallon or 2 of west and a paintbrush.
A 62 ' military vessel is not a small yacht.
I have never seen a smooth copper bottom, fact is , I have only seen a few , maybe some were clad but I didn't know it? The seams were overlapping and there were thousands of nails and then there is the pitchy goo underneath.
Can you show me a smooth small yacht in copper?
__________________
bruce smith is offline   Reply With Quote
Old 15-08-2012, 16:22   #12
Registered User

Join Date: Jul 2012
Location: Mallacoota - SE Australia
Boat: 1950's Lakes Cruiser
Posts: 82
Re: wood hull repair toredo worm

My wooden boat was built in the early 50's (last century of course) it had copper sheeting along the keel and as mentioned earlier when I replaced the
sacrificial keel the copper was in tatters - the pitchy goo eats the copper ?
__________________
MV-Romnya is offline   Reply With Quote
Old 15-08-2012, 16:34   #13
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,114
Re: wood hull repair toredo worm

Bruce , to each his own.
OP has 55ft, close to 62ft. Motorsailor, so not a raceboat.
Gauge of cladding might make a difference in finish, but I'd take the copper protection over the worm problem.
All rhetorical.
__________________
so many projects--so little time !!
Blue Stocking is offline   Reply With Quote
Old 15-08-2012, 16:37   #14
Registered User
 
bruce smith's Avatar

Join Date: Jul 2008
Location: puget sound/ caribbean
Boat: never wrecked a boat while awake or sober
Posts: 330
Re: wood hull repair toredo worm

no , the pitch/ coal tar whatever is thick, thus , more lumps. It is bedding for the copper.
__________________
bruce smith is offline   Reply With Quote
Old 15-08-2012, 17:36   #15
Resin Head
 
minaret's Avatar

Cruisers Forum Supporter

Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,198
Images: 52
Re: wood hull repair toredo worm

Quote:
Originally Posted by bruce smith View Post
no , the pitch/ coal tar whatever is thick, thus , more lumps. It is bedding for the copper.
Generally you first apply a layer of hessian which is then impregnated with pitch. This keeps the pitch layer fair. Only an amateur would seat each nail deeply enough to cause dimples in the copper.
__________________

__________________
minaret is offline   Reply With Quote
Reply

Tags
hull

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 03:27.


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.