"Short Wave Sportfishing" wrote in message
Interesting. Did he say why?

Just out of plain old curiosity, what group was he with?

Later,

Tom


I started to take notes...but the coated cashew nuts in my freebee bag kept
calling out to me.
I remember him talking about good judgement, experience, tapping on hull
etc. and length of report (30-45 pages long)
As for which association...I can't remember which...just know he said it was
the best one.
I went hoping he'd be telling us all the secrets of the trade...tips on how
to do our own survey. It was more like an infomercial
and those darn coated cashews kept interrupting my attention.......

On Mon, 21 Mar 2005 01:22:04 GMT, "Don White"
wrote:


"Short Wave Sportfishing" wrote in message
Interesting. Did he say why?

Just out of plain old curiosity, what group was he with?

I started to take notes...but the coated cashew nuts in my freebee bag kept
calling out to me.
I remember him talking about good judgement, experience, tapping on hull
etc. and length of report (30-45 pages long)
As for which association...I can't remember which...just know he said it was
the best one.
I went hoping he'd be telling us all the secrets of the trade...tips on how
to do our own survey. It was more like an infomercial
and those darn coated cashews kept interrupting my attention.......

mmmmmmmmcoatedcashewnutsmmmmmmmmmmm

On Mon, 21 Mar 2005 00:02:52 GMT, "Geri"
wrote:

Phew! Thanlks everyone for your responses. I can honestly say I'm now more
educated on the matter, yet still pretty indecisive on the purchase.

================================================== ====

If everything else is good, you like the boat, and the price is right,
I'd go for it. If the high readings are only on the foredeck, look
for secondary indications such as mildew, cracking, flex, crackling
noises when you walk over it, etc. If there are no secondary
indications of delamination or soft core you are probably OK, just
something to keep an eye on in the future.

On Sun, 20 Mar 2005 20:46:51 -0500, Wayne.B
wrote:

On Mon, 21 Mar 2005 00:02:52 GMT, "Geri"
wrote:

Phew! Thanlks everyone for your responses. I can honestly say I'm now more
educated on the matter, yet still pretty indecisive on the purchase.

================================================= =====

If everything else is good, you like the boat, and the price is right,
I'd go for it. If the high readings are only on the foredeck, look
for secondary indications such as mildew, cracking, flex, crackling
noises when you walk over it, etc. If there are no secondary
indications of delamination or soft core you are probably OK, just
something to keep an eye on in the future.

And the addition of torpedo tubes, TOWs and twin .50 cals on the fore
deck will really impress the neighbors.

Hell, as long as you are at it, paint it with stealth materials.

WHOO HOO!!!

Later,

Tom

On Mon, 21 Mar 2005 01:59:29 GMT, Short Wave Sportfishing
wrote:

On Sun, 20 Mar 2005 20:46:51 -0500, Wayne.B
wrote:

On Mon, 21 Mar 2005 00:02:52 GMT, "Geri"
wrote:

Phew! Thanlks everyone for your responses. I can honestly say I'm now more
educated on the matter, yet still pretty indecisive on the purchase.

================================================ ======

If everything else is good, you like the boat, and the price is right,
I'd go for it. If the high readings are only on the foredeck, look
for secondary indications such as mildew, cracking, flex, crackling
noises when you walk over it, etc. If there are no secondary
indications of delamination or soft core you are probably OK, just
something to keep an eye on in the future.

And the addition of torpedo tubes, TOWs and twin .50 cals on the fore
deck will really impress the neighbors.

Hell, as long as you are at it, paint it with stealth materials.

WHOO HOO!!!

Even better - put a set of wheels under, some really sharp rims, low
profile tires, a spoiler, do a funky vinyl job with some bright paint,
add a 2400 watt stereo with a really monster set of 24" subs - cruise
the highways and biways.

Hmmm - a little much maybe?

Later,

Tom

On Mon, 21 Mar 2005 01:59:29 GMT, Short Wave Sportfishing
wrote:

And the addition of torpedo tubes, TOWs and twin .50 cals on the fore
deck will really impress the neighbors.

Hell, as long as you are at it, paint it with stealth materials.

WHOO HOO!!!

===========================

Did I miss something here?

Buy the boat. If it doesnt have blisters after 18 yrs, it probably
wont get them. Blisters are only cosmetic nearly all the time anyway.
Blister repair, even the gelcoat peeling type is a great scam for boat
yards and rarely solves anything. If you are worried, please show me
one documented case of hull failure from simple osmotic blistering. It
simply doesnt happen.

"Short Wave Sportfishing" wrote in message
...

It depends on your definition of density. Using a standard definition
of density like the mass per unit volume of a substance under
specified conditions of pressure and temperature, then no, a moisture
can't measure density in that sense.

You measure density by specific gravity - that is weighing the
material in question or determining it's relative hardness (density)
by deforming the surface or the shape of the material in some manner
and measuring the force needed to do so. Then applying some
mathematics, you have density.

As I understand it, and have demonstrated to myself by playing with
the one I have, moisture meters measure resistance. They do this by
using a 1 KHz modulated signal anywhere from 5 to 40 KHz in frequency
across a predetermined distance (centers of the probes or pads).

The presence of water would necessarily mean that there was lower
resistance, but it doesn't mean that the material is less dense.
We're not dealing with a solid block of something - this is woven and
porous fiber. The density of the fiberglass and resins isn't the
issue - it's the water in, through and surrounding the fibers and it's
penetration through the resins.

Think of it this way. If you fill a ceramic bowl with water and put
the meter pads in it, what are you measuring? The amount of water in
the bowl or the density of the bowl?

Yes/No?

Later,

Tom

Whatever floats your boat. Actually, I was trying to recall what limited
knowledge I have with ultrasonic nondestructive testing and how it may (or
may not) apply in the moisture testing. Ultrasonics are used to test for
flaws or inclusions in welds, but can also be used for other materials to
measure thickness and changes in the density of the material. My bag was
thin films for optics and we but used many of the same laws (Snell's law and
others) although we delt with the refractive index of a material rather than
it's density. I donno ... just a thought.

Eisboch

On Sun, 20 Mar 2005 23:50:49 -0500, Wayne.B
wrote:

On Mon, 21 Mar 2005 01:59:29 GMT, Short Wave Sportfishing
wrote:

And the addition of torpedo tubes, TOWs and twin .50 cals on the fore
deck will really impress the neighbors.

Hell, as long as you are at it, paint it with stealth materials.

WHOO HOO!!!

===========================

Did I miss something here?

Obviously. :)

Not to worry - it was a musing on my part that in retrospect, was a
little strange.

It happens sometimes. :)

Later,

Tom

Think about it... unless the hull has been out of the water for some time,
it's probably wet when pulled during the survey! I agree, these things are
very inexact and more art than science. I did have significant blistering on
my hull... did the whole peel and dry with hotvac thing. We took LOTS of
meter readings with different meters in the same place, even oven dried core
samples, etc. Meter readings should only be used to measure relative
differences, as none that I could tell gave an absolute measurement. Also
any metal in the hull or nearby makes the readings go high.

--


Keith
__
The only difference between a rut and a grave is the depth.
"Don White" wrote in message
...

"Marley" wrote in message
...

Believe it or not, MANY surveyors frequently have no clue that this is
the case.


At a seminarduring our local boat show, the speaker, who is president of
an
international surveyors association, said the moisture meter is probably
the
last thing he uses during a survey.