"Mid Size Power Boats": A Guide for Discreminating Buyers - by David Pascoe

PHOTO LIBRARY

From Article 

The Wonderful World of Hull Blistering 

Photos by David H. Pascoe, Marine Surveyor

  

unwetfibers1 
Photo of hull with gelcoat removed, revealing that the mat is very poorly wetted. 

 

 

pimples
Photo of same area prior to removing gelcoat. Pimple blisters are all beneath gelcoat and not under the mat, none of which grew to any significant size. 

 
 
 

 
In this ground away blister, the ply separation is clearly evident around the perimeter as shown by arrow. When it is repaired, the void or incomplete bonding will remain. 

 
 
 

plysep
The skinout mat on this hull never was fully bonded. This is the result after six inch blisters were peeled away. This large section was peeled off with a screwdriver. Note that the mat is less than 50% saturated. 

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Related Photos: Avoiding Blister Blues

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About Author:
David H. Pascoe is a marine surveyor (retired) with 40 years' experience.

He is author and publisher of power boat books:

"Mid Size Power Boats"
"Surveying Fiberglass Power Boats" 2E
"Buyers' Guide to Outboard Boats"
"Marine Investigations"

Visit  yachtsurvey.com  for more than 160 online articles.

David Pascoe's biography

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