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Thread: Sheathing Pt Deux - Purists do not enter )

  1. #1
    Join Date
    Aug 2020
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    Rotterdam, Netherlands
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    Default Sheathing Pt Deux - Purists do not enter )

    Asking for a friend...
    This is hail Mary for a big old wooden boat that has sat on the dry for many years. Some planking needs to be done around the tightest curves, of course, where else, and it needs all the paint + ??? + ??? sanded off before (insert whiz bang epoxy coating sealant) is applied.

    THE PROBLEM... as we all know, is that water in that inevitably gets into the bilge one way or another, is going to get absorbed by the 1inch Iroca wood planking which will swell. At that point, the (non pitch tar) coating and paint will inevitably fail, crack and leak.

    After reading this thread:
    http://forum.woodenboat.com/showthre...62-Carvel-Hull
    I agree with those that conclude it wont remain stuck on an older boat like this for long. There are also issues about sealing it around the rusted steel keel plate that would inevitably require removing the keel ballast and finding goodness knows what horrors that would require addressing in order for the sheathing to be watertight (not happening)

    I also agree that the planking should just be redone properly as the best course, BUT there are severe logistical problems that realistically only provide for 30-60 days of full time work by this friend in somewhat limited circumstances. The boat has potential for the right buyer, but is most likely going to be scrapped despite the considerable amounts spent on her by the previous owner years ago.

    So, my, eh hem friend, is considering "creative" sheathing the hull to get some use out of her for a season or two, better than nothing, and an adventure in wood working, while cruising and getting the rest of the boat operational and serviced (a different discussion)

    Option Une:
    Replace the planks, apply minimal antifoul, do a season in the water to soak the wood, haul out somewhere mors cost effective next winter, sand again, and apply whizz bang products to the wet expanded wood so they do not crack off. Put boat back in water and live on it while cruising or sell to next fool needing wood education after a couple of seasons.

    Option Deux:
    Assuming the hull can be sanded to good clean wood at the keel to get a good bond, and assuming that acres of resin soaked fiberglass can be propped up in place against gravity to bond to the hull (some parts of the hull are horizontal), the plan would be to fix the planking "expediently", shaeth and put it in the water for the summer and enter the mental state of denial while enjoying sun, babes, islands and cocktails.

    This option would be great to "fix" the state of the hull if the inside surfaces could be treated to prevent water absorbtion, but how realistic is that, particularly in the bilge under the engine. If this could be pulled off, it would make pressure washing and below waterline problems minimal. It would be an ideal solution

    Option Trois:
    Forget about wood boats, buy a plastic eyesore less than half this boats length, and enter the mental state of regret and depression with no babes or cocktails..

    As I said, this thread is not for purists, and yes my friend is challenged as a result of the world going hell in a covid hand basket (made of wood I note)

    So think EXPEDIENT, and lets hear it !
    Last edited by Magenta; 05-26-2021 at 03:28 AM.

  2. #2
    Join Date
    Apr 2000
    Location
    Southampton Ont. Canada
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    7,582

    Default Re: Sheathing Pt Deux - Purists do not enter )

    Why the need for 'wizbang' products(epoxy I assume)?
    Do option one and skip the epoxy.
    You will have already done the work to seal the boat from water ingress "for a season or two".

    If you, ahem... your friend,only want it for a year or two,IMHO, you are barking up the wrong tree.
    Big boats are a big commitment and big wood boats.......

    So .....anyway, why has the boat been out of the water for many years?
    Did someone buy it ,looking to fix it up, and die a poor,broken man?
    R
    Sleep with one eye open.

  3. #3
    Join Date
    Dec 2003
    Location
    Sound Beach, NY
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    5,288

    Default Re: Sheathing Pt Deux - Purists do not enter )

    I owned a wooden boat that had been fiberglass sheathed on the outside only. It sailed for many years after that, living in the water.

  4. #4
    Join Date
    Oct 2009
    Location
    South Puget Sound/summer Eastern carib./winter
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    23,258

    Default Re: Sheathing Pt Deux - Purists do not enter )

    You rang ?
    If your concern is the garboard iroko swelling up, then run a skilsaw down it lengthways, turn it into 4 or 6 square planks.Esentially convert it to a strip planked bottom...far mor stable.

  5. #5
    Join Date
    Aug 2020
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    Rotterdam, Netherlands
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    Default Re: Sheathing Pt Deux - Purists do not enter )

    Quote Originally Posted by wizbang 13 View Post
    You rang ?
    If your concern is the garboard iroko swelling up, then run a skilsaw down it lengthways, turn it into 4 or 6 square planks.Esentially convert it to a strip planked bottom...far mor stable.
    Im not sure I follow that. could you expand a little more please.

    The main concern is the planking swelling and causing the sheathing to fail. The Garboard is where the metal keel is attached so the sheathing would need to go under it or over it.

  6. #6
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    Default Re: Sheathing Pt Deux - Purists do not enter )

    Lets say the gbd. is 10 inches wide( at its widest point)
    Run a skilsaw , set to 7/8ths inch of the one inch thick plank, full length, down the plank, 4 times.
    Fill the kerfs with epoxy.
    You will be virtually turning it into 5,2 inch planks.
    Wood is more stable that way. Five ,two inchers move less than one ten incher.
    It is why strip plank boats work with epoxy and carvel boats do not(so much).
    bruce

  7. #7
    Join Date
    Apr 1999
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    Now, there's a long story...
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    Default Re: Sheathing Pt Deux - Purists do not enter )

    It's behind a paywall, but worth it:

    https://www.offcenterharbor.com/vide...life-charlena/
    Heute ist so ein schöne Tag...

  8. #8
    Join Date
    May 2016
    Location
    Ottawa, Canada
    Posts
    585

    Default Re: Sheathing Pt Deux - Purists do not enter )

    My advice would be to get a bunch of photos online so Bruce can take a good look.

    Cheers,
    Mark

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