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Darren Rice
05-17-2017, 03:02 PM
Hi - we are seeking advice please. We wish to store our carvel plank kauri launch for a minimum of 2 years on land. Are there any techniques we need to ensure her wellbeing? e.g. could we put a volume of salt water in the bilge to stop shrinkage, would appreciate any comments, as we want to keep her and do what is best - thanks everyone.

Regard Darren and Sharon Rice

Peerie Maa
05-17-2017, 03:21 PM
Welcome to the forum

You need to aim for stable humidity, store her under cover, in a well ventilated space on an earth floor. Instead of filling her with salt water, wash her down with a borax solution. Try something like https://redox.com/products/borax/
Maintain a steady humidity by watering the earth floor on dry days.
How is she fastened? If she has a lot of iron in her the borax will help, but do not get her too wet or the iron will continue to rust. If copper fastened that will be less of a worry.

Thorne
05-17-2017, 04:31 PM
As you can see, you need to give us a lot more info to get accurate answers -- will this be in a boatyard or back pasture? Will there be people around or is she on her own? Size, materials, types of fasteners and condition of boat?

Your local wooden boat owners and yards may be the best resources for this info, as specific locations may have weather conditions that require special efforts...

jackster
05-17-2017, 04:47 PM
Have the yard put the boat in the water, on your mooring during your summer, haul it out during your winter as if you were using it. I think that protocol will be cheaper in the long run.
Again, just MY opinion.

johnw
05-17-2017, 04:59 PM
Too much salt water inside the boat could damage it. The structure is designed for water pressure from the outside, not the inside.

Buch32
05-17-2017, 11:38 PM
Hi Darren,
Please contact me as I live in Tauranga and have had my Buchanan 32 at home for the last 7 years doing a restoration. There are ways and means|;)Dennis

nedL
05-18-2017, 07:03 AM
I will also add the comment to make sure she is blocked and supported well. Wooden boats generally need much better blocking than glass boats. Multiple sets of keel blocks and side stands. Too many can only help and will not hurt. Not much point in all the other precautions only to find her mis-shapened after the two years.

MN Dave
05-18-2017, 02:42 PM
Welcome to the forum

You need to aim for stable humidity, store her under cover, in a well ventilated space on an earth floor. Instead of filling her with salt water, wash her down with a borax solution. Try something like https://redox.com/products/borax/
Maintain a steady humidity by watering the earth floor on dry days.
How is she fastened? If she has a lot of iron in her the borax will help, but do not get her too wet or the iron will continue to rust. If copper fastened that will be less of a worry.
+1
Borax and borates are excellent at preventing rot, mold and insect damage, but don't swell wood very much (https://www.fpl.fs.fed.us/documnts/fplrp/fplrp60.pdf). While maintaining a steady high humidity will keep the wood from shrinking, it takes some degree of continuous attention. Ethylene glycol will swell wood slightly more than water and will help absorb water from the air. Glycol is very slow to evaporate, so once applied, it will keep the wood swollen for a long time. Glycerin and PEG are even slower to evaporate, but slower to absorb and not as toxic to rot and insects. While ethylene glycol is toxic, it takes a large dose to hurt anything. Because it is sweet, small children and animals will drink it. As long as you don't leave unattended open containers or puddles, there is no danger. You have to be a termite to get enough ethylene glycol from glycol soaked wood to hurt you.
See Table 2 http://users.teilar.gr/~mantanis/Swelling_of_wood.Part_II.Swelling_in_organic_liqui ds.pdf

Other glycols, such as PEG and glycerol (glycerin) are also used to conserve wood, and will prevent shrinkage, but are not as inexpensive, readily available and easy to apply as ethylene glycol.
Conservation of Wood Artifacts (https://books.google.com/books?id=_ZDcBQAAQBAJ&pg=PA402&lpg=PA402&dq=wood+swelling+ethylene+glycol&source=bl&ots=eYw_4ltCxC&sig=foCVdTNoXLwXYs50usqa8_ZeRXg&hl=en&sa=X&ved=0ahUKEwjCj7eHkvrTAhUJsFQKHQmfAucQ6AEISTAG#v=on epage&q=wood%20swelling%20ethylene%20glycol&f=false): A Handbook

More on Boron, if you will pardon the pun:
Borasol (http://qualityborate.com/products/pest-control-products/borasol-pc-applications)
Too much information sheet (http://npic.orst.edu/factsheets/archive/borictech.html).

Buch32
05-18-2017, 07:12 PM
Agree wholeheartedly, more support the better. Also fresh water is great enemy of anything in storage, especially wooden boats!