i bought a boat had sat in water for 26 yrs without haulout . had an iron bolt on keel
there was no damage until pulled and no t primed then resplashed-- then the keel
started to rust like a big dog. nothing else was a problem. engine
didnt run-- but was it expected to after so long?? LOL.
doesnt blister because of sitting in water without drying sorry--. blisters
come because of layup
style and materials that were used. the fact that the gelcoat
was sprayed instead of hand laid will make a boat blister, the materials used-- not enough epoxy
substance in the matt used to build the boat so sea water is absorbed into it by osmosis
the boats of the 1960s do NOT blister. not unless someone scratched the gelcoat
below the water line deeply enough to allow a lot of water to suck into it. the gelcoat was hand painted into the mold
and was about 1/8 inch thick as a result. after the gelcoat was painted into the mold
, the roving layers were begun-- criss -crossing each layer --different directions for strength. this was forbidden after 1973.
in 1973 environmental protection agency spawned laws were passed regarding what kind of chemicals were able to be used to build boats and how to do it-- process to be used to make boats was changed by laws made in mid 70s also.. then was when the blistering situation first became prevalent. the mfgr was using matt not roving and chopper gun process showed to be a bust.
so. please understand it isnt the lack of haulout causes blisters. is the manufacturing processes this nation chose to vote into law in the mid 70s.
you can hire a diver to check the bottom if you are worried about blisters-- they are usually not a big deal
\ if it is a 1960s boat--it will NOT have blisters.
i twas not the oil
crisis causing blisters either.
it was our wonderful congress and their buddies leaning on the boat building industry, and forcing a change in composition of the materials used to build boats. hd nothing to do with poil crisis or staying in water too long.
fiberglass does not rot
. that is why there are so many abandoned fiberglass boats-even before the market dropped on its butt.
ver can feel the bottom of th eboat and tell you iof ther eis any blistering. he can tell you if the blisters are wet or dry. he can tell you a lot.
blisters are overrated. they dont sink boat nor do they slow down the boat. they only actively sukk water into the gelcoatr when they have a hole in center--then they are called wet blisters. when they tunnel together-- if they do-- then grind them out n d fix em. then barrier coat the hull before painting. is not a big deal unless you make it so.
i have owned 2 blistered boats. pre 1973 boats are buiilt differently than post 1973 boats. thwre is the great debsate as to whether they were better or not-- but i would much rather cruise
in a boat built before the late mid 70s than one built after then -mine is a 1976 build year , and in taiwan
. they didnt have to follow the same laws that our builders did. there is no epa in taiwan
wingover--what i s make of boat-- 1971 is a safe year-- still old pre-epa laws--- no blisters.