[C38] PHRF rating versus actual displacement?

[Les]

Hi, GUYS,
	We had JACE's hull done also and with about the same experience.  It is
lighter and dryer.  But that is an expensive process.

Regards,
Les H
On Tue, 2010-01-12 at 09:46 -0800, ssorton at sbcglobal.net wrote:
> Glen,  Part of the displacement increase maybe due to gel coat that was used
> on almost all fiberglass boats of that time period.  My hull was built the
> last part of '84 with a polyester gel coat system that included a fire
> retardant.  This system proved to greatly enhance the growth of blisters.  I
> like to race and at haul out every 2-3 years I couldn't sand the old paint
> without breaking through the blisters.  Every broken blister had to be
> recoated with epoxy- I had hundreds and hundreds of them.  After going
> through a couple of haul outs repairing blisters, I had the bottom pealed
> (removing all gel coat below the water line- about 1/8th of a inch), and
> replaced with a vinylester gel coat system.  Vinyslester system is used on
> all modern fiberglass hulls.  The result was no more blisters and the boat
> floats a good inch higher- not measured though, just visual.  I also believe
> the boat is dryer on the inside.  The bottom line on all this is I believe
> our hulls can soak up a lot of water/weight, which could explain some of the
> weight deferential between PHRF and actual.
> Cheers, Steve Orton (hull #304)
> 
> -----Original Message-----
> From: listserve-bounces at catalina38.org
> [mailto:listserve-bounces at catalina38.org]On Behalf Of Glenn 401 855 4355
> Sent: Friday, January 08, 2010 11:34 AM
> To: listserve at catalina38.org
> Subject: [C38] PHRF rating versus actual displacement?
> 
> 
> 
> 
> Has any one compared their actual displacement figures with the factory
> specs?
> 
> I own hull number 13, POIA, here in New England.  Have owned her for
> almost 12 years.
> 
> I have the feeling she is "overweight" and like many boat mfgs I work
> with this is not unusual to have a displacement spec that was a target
> but not achieved.  This particularly happens with the first few boats
> built; they are over built which is a good thing.
> 
> However, I am going to have POIA measured this spring since if the
> displacement is in fact much higher than the specs then her PHRF rating
> is lower than it should be.  I would be curious if other members have
> any such experiences?
> 
> thanks
> Glenn Walters
> 
> 
> 
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