Issues with rotting wood and hull Mark 0

Issues with rotting wood and hull Mark 0

Postby benllben » Mon Jul 17, 2017 1:07 pm

I have recently purchased a Mark 0 Tophat 25, the wooden hull variety, but have recently discovered a concerning amount of wood rot. The worst of which appears to be a spot the size of a 50c coin on the hull where a bolt remains after one of the strip of woods running down the hull have detached. The wood is very soft and falls apart easily when touching it. There are a few other areas where the strips are detaching, and some where they are cracking. The bottom of the bulkheads in the bilge are also very soft and rotted, however this only affects the lower portions so perhaps so wood penetrating epoxy designed for rotted wood may help with that?

I am unsure as to what should be done about the strips of wood and the hull. Would something like the penetrating epoxy be enough, and if not, what are the other options. The boat is currently moored at lake macquarie and i do not plan to sail out of the lake until it is fixed and safe. The boat also does not have a working motor, and even if it did, i could not afford to haul the boat out considering the cost of the bond at the marina.

Any advice would be greatly appreciated!
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benllben
 
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Re: Issues with rotting wood and hull Mark 0

Postby benllben » Mon Jul 17, 2017 9:05 pm

Afters speaking to a very helpful person from pittwater, i think the plan is to haul the boat out in about 2 months and scrape out all the soft wood from the hull and use the west system wood preserver. From there, the remaining gap will be filled with a thickened epoxy and faired before painting. New ribs can be sistered alongside of the original, and the rot in the bottom sections of the bilge bulkheads can receive a similar treatment to the hull, although some extra timber might be substituted for the thickened epoxy if its a large section.

Does anyone see a problem with this approach of fixing the rotting wood?
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Re: Issues with rotting wood and hull Mark 0

Postby Shaun » Tue Jul 18, 2017 8:41 am

Welcome to the forum.
Unfortunately I have no idea how what to with the problems you've described. Even as a carpenter, shipwright type of work is another world.
I have received good advice from Boat-Craft NSW over the phone, when calling them to order epoxy. They have specialised products to repair timber boats & would be well worth looking into. They also have booklets on various repairs you can buy.
Some of the Wooden-Boat forums would have some good advice.
And if you have a slipway nearby that specialises in timber boats (we have one at Port Macquarie), those places are a goldmine of good advice.
All the best,
cheers
Shaun
"Blue Moon" MkIII Junkette rig,
Camden Haven River,
Mid Nth Coast, NSW

Order of the Albatross - 2011
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Re: Issues with rotting wood and hull Mark 0

Postby benllben » Tue Jul 18, 2017 8:41 pm

Thank you Shaun.

Unfortunately i live in Penrith, so that is 2 hours south west of lake Macquarie.
I will have a look around at those places suggested and see if they can be of any help.
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