[C320-list] Hull makeover

[Scott Thompson]

I also have a Maryland boat that probably was not properly de-waxed when 
new. I am the second owner but I believe it was originally commissioned 
locally, and for the first few years of my ownership I had recurrent 
problems with paint flaking off in large patches. But I've never seen 
any sign of blisters. I finally had the bottom blasted down to gelcoat, 
with a barrier coat applied before a good bottom paint. I had it done 
again this year (after ten years) mostly because I use a hard paint and 
was concerned about build-up. I don't have a slip, so I haul out every 
winter, and apply one fresh coat every Spring, which is probably 
overkill, but which seems to work for me. Bottom prep is the one thing 
that I always pay someone else to do.

Now if I could just find something that worked well for the prop. I 
injured my shoulder last month and so the boat hasn't been moving much, 
and when I tried to motor it around last week I couldn't get up to full 
RPMs so I suspect a fouled prop. Again. When this happened last year I 
had to scrape it all off along with the expensive Propspeed by diving 
under the boat while on the mooring. I nicked my finger on some 
barnacles and caught a bacterial infection that spread up my arm leading 
eventually to surgery and months on antibiotics. So Propspeed isn't 
working for me.

Scott
Surprise, #653

On 8/5/2015 5:03 PM, Allan S Field wrote:
> Marco - If the boat was originally commissioned on the Chesapeake, there is
> a better than even chance that the hull was not de-waxed at original
> commissioning.  How do I know this?  Because for years, I had peeling paint
> issues and finally was able to isolate the problem to lack of dealer prep
> from a dealer on the Chesapeake.  I finally surrendered last August and had
> the bottom soda blasted.  For the first time in 13 years, the paint rolled
> on like it was supposed to do - no rolling on of one coat and pulling off of
> the previous.  I will do a shorthaul in about 2 weeks to clean and repaint
> the underwater metals plus change the zincs so will know more then as to how
> the paint has held up for a year.  But just from the way it went on, I very
> much doubt that I have any more issues.
>
> As for blistering, these boats are supposed to be laid up with vinylester
> resins which are bullet proof from blistering, so I have been told by Gerry
> Douglas.  I leave my boat in the water year round and have never had one
> blister.  That said, there was a run of 75-100 boats back in the 1990's that
> did suffer from blistering.  Your boat may have been one of them but perhaps
> someone else on this list knows the hull numbers that were impacted.  My
> memory though is that they were in the 400 series.  If I am right, I am
> perplexed to understand why you have had any blisters.  Could they have been
> just paint bubbles?  I had a ton of them every year at haulout but again,
> that's because the paint would not stick to the bottom.
>
> I also have heard, but never fully confirmed, that Catalina made-good on
> those affected hulls that did have blistering issues.  So you may want to
> contact Catalina to determine if they know whether or not yours was impacted
> or if it was corrected at their expense.  I do know of one boat on the
> Chesapeake that was "fixed" at Catalina's expense but several years later,
> needed to be "fixed" again at the owner's expense.  Based on an "n" of one,
> it could be that the fixer of your boat was the same fixer of the one I know
> about and it really wasn't fixed.
>
> Hope this helps.
>
> Allan S. Field
> Sea Shadow - #808
> Columbia, MD
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
> Of Marko Jamnik
> Sent: Wednesday, August 5, 2015 4:39 PM
> To: C320-List at Catalina320.com
> Subject: [C320-list] Hull makeover
>
> Not a good time to be planning a fall, winter project, but here it goes.
>
> Sail number 304 - 1995. I had purchased the boat in 2010 and have brought to
> lake Ontario. Prior to that it had been in Baltimore and I have no idea how
> many times it was hauled out for inspection, not many. I did a cosmetic fix,
> sanding and drilling out three blisters the first season, there after
> sanding and applying Micron. Tried to sand down the blue antifouling paint
> that had been there, some success in areas and other location not. Over the
> last five years I've had no more blisters and I'm finding that every year
> more of the blue paint peels here and there exposing the inter protect
> layer.
>
> The challenge here is do I sand blast. peel the hull or any other method.
> Is it worth while doing it myself or am going to regret the challenge. My
> thought here is to have some do one of the above options and then I will do
> the remainder, epoxy, interprotect, sanding and antifouling which should put
> me on the door step of launch time.
>
>
> Any advice would be much appreciated
>
> Marko jamnik
> Marquesas 304
> Lake Ontario
>
> Toronto/Mississauga area
>