My boat has 3/4" of handlaid mat & woven roving above the waterline. No
way
you'll see daylight. The 35s5 has less than that below the waterline.



You can see bright sunlight through an inch of fiberglass, Mooron. I've
been aboard some old-time Albergs and such and you can see light. Means
nothing of course. You can also see light through bullet proof glass. I
helped install a radar on a Sweden last season....plenty of light
coming through the hull of the proven blue water sailor as well.
Vito is just an idiot and likes to prove it often.
1" thick was because no one knew how touch glass could be at that time.
My old Catalina also had some pretty thick sections. Nowadays they're
building thin strong hulls like mine and that's yet another reason why
my boat is the better sailor. Plus my boat doesn't rot inside like the
Nordica...don't make me post those pics of the Nordica frame rotting!

RB
35s5
NY

"Capt. Rob" wrote in message
ups.com...

You can see bright sunlight through an inch of fiberglass, Mooron. I've
been aboard some old-time Albergs and such and you can see light. Means
nothing of course. You can also see light through bullet proof glass. I
helped install a radar on a Sweden last season....plenty of light
coming through the hull of the proven blue water sailor as well.

That light coming through depends on the woven material. Fibreglass matt is
usually white, so it reflects all light. The reason light gets through is
because the weave has gaps in it. The reason there are gaps is that the
glass isn't laid up properly, it is stretched beyond specification.

Amen!

The reason light gets through is
because the weave has gaps in it. The reason there are gaps is that the

glass isn't laid up properly, it is stretched beyond specification.


So Sweden, Pearson, C&C, Catalina, Beneteau, Tartan, Vindo, Bristol and
Alberg all have hulls stretched beyond spec? And I do mean EVERY hull
because I can see light through portions of just about any boat's hull.
Again, the only hulls that I've ever seen to stop light were
awlgripped, wood or steel.

RB
35s5
NY

Bob Crantz wrote:
That light coming through depends on the woven material. Fibreglass matt is
usually white, so it reflects all light.

That's the wax holding it together.

.... The reason light gets through is
because the weave has gaps in it. The reason there are gaps is that the
glass isn't laid up properly, it is stretched beyond specification.


Maybe, maybe not. The ratings on fiberglass cloth tell how
long the component strands are.... longer is better of
course... cheap cloth or roving, such as used for auto-body
repairs, will be made up of a lot of short strands spun into
yarn to make up the weave, but it's not as strong as the
same weight of cloth with more continuous strand.

Very interesting stuff, I'm learning.

DSK

I've made aircraft radomes out of extremely high quality fibreglass. You
couldn't see through .05" of the stuff.

Amen!




"DSK" wrote in message
.. .
Bob Crantz wrote:
That light coming through depends on the woven material. Fibreglass matt
is usually white, so it reflects all light.

That's the wax holding it together.

.... The reason light gets through is because the weave has gaps in it.
The reason there are gaps is that the glass isn't laid up properly, it is
stretched beyond specification.


Maybe, maybe not. The ratings on fiberglass cloth tell how long the
component strands are.... longer is better of course... cheap cloth or
roving, such as used for auto-body repairs, will be made up of a lot of
short strands spun into yarn to make up the weave, but it's not as strong
as the same weight of cloth with more continuous strand.

Very interesting stuff, I'm learning.

DSK

Bob Crantz wrote:
I've made aircraft radomes out of extremely high quality fibreglass. You
couldn't see through .05" of the stuff.


If you could see thru it, it wouldn't be stealth technology,
would it??

DSK

I've made aircraft radomes out of extremely high quality fibreglass.
You
couldn't see through .05" of the stuff.


Please don't tell me my 35s5 hull is weaker than .05" radome
material!!!!


RB
35s5
NY

Of interest:

http://www3.interscience.wiley.com/c...TRY=1&SRETRY=0


http://oemagazine.com/fromTheMagazin.../testtalk.html


Amen!



"DSK" wrote in message
.. .
Bob Crantz wrote:
I've made aircraft radomes out of extremely high quality fibreglass. You
couldn't see through .05" of the stuff.


If you could see thru it, it wouldn't be stealth technology, would it??

DSK

"DSK" wrote
If you could see thru it, it wouldn't be stealth technology,
would it??

Maybe. The stuff I'm used to reflects a certain % of incident radar waves. We
put a screen 1/4 wavelength inside that reflects the same (1/2 wave total). The
two cancel in the radar's reciever.