Moisture Meter Readings

[GST]

I'm looking at buying a boat and have had access to an old survey of 2000 this is great but the figures that were given for the moisture readings were 0-3 topsides and 0-5 for below the water. I don't know what meter was used and for certain they used hypens not dots. Anyone got any ideas? The other problem is that the boat is on a swinging mooring so if I survey her the readings will be wonky anyway. Is it true that if I get some readings done from the inside they will be more reliable, i.e. suspended on the travel hoist soaking wet.

Thanks
Glyn

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[lezgar]

The moisture readings only tell you that the hull have some liquid inside, but no that has osmosis (All hulls absorb some water). Without to know what moisture meter was used and in what conditions the numbers that you give are irrelevants. Like you say the hull need time to dry before the moisture meter can to be used and the readings can to be affected by metals, water in the bilges... Readings from the inside in a wet outside hull are no reliables.
This is a interesting reading http://www.yachtsurvey.com/moreonblisters.html.htm

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[Guest]

The survey is useless in effect - as you have no detail about what meter, what weather conditions and other relevant data.

BUT taking the numbers you quote - they are near similar - have you had the boat lifted and checked out underneath ?
Metering from inside ???? IMHO - wasted effort and all you do is pay money for nothing.

Get it done properly ..... lifted, dried off for a day etc. Gives you a chance to check underwater fittings / anodes etc. etc. Make up a list of what you want to check etc. to make the lift productive.




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[Birdseye]

The survey is useless anyway - its 4 years old, and since most polyester boats have the beginnings of osmosis within 10 years the situation of your boat may well have changed. Plus you cant sue / benefit from the insurance of a surveyor who has done the survey for someone else.

Be realistic. Most people will happily cough up 15k for a car without an RAC check - the equivalent of a survey. They use their eyes and judgement. If the boat is more expensive / you are really concerned, then get yourself a new survey.

There are far worse / expensive probs on a boat than a bit of osmosis. For example, try dealing with water in a balsa sandwich deck, or a foam sandwich hull. And then what about re-enginingwhich on many boats will be more expensive than an osmosis job.

Trouble is, osmosis has assumed bogeyman proportions for lots of people . Its not good, but its not the end of the world either. And if you are good enough at diy to be able to paint / tile a bathroom, then you can do a perfectly competent osmosis job - blag a copy of the Cruising Assn latest magazine and see how one member did so.



<hr width=100% size=1>this post is a personal opinion, and you should not base your actions on it.

 

[Stemar]

Have a look at <A target="_blank" HREF=http://www.yachtsurvey.com/blisters.htm>http://www.yachtsurvey.com/blisters.htm</A>

Moisture in a hull is pretty much inevitable after years in the water. Whether or not you get blisters is lagely dependent on the quality of the layup, but the main problem about a few blisters on your boat is what the surveyor says about it when you come to sell. Blistering is almost never so serious as to affect the structural integrity of the boat, but they are a great way of getting the price knocked down.

Good luck

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