Carl Schaefer wrote:In a couple months I will haul my boat for a barrier coat and some thruhull rearranging.

I have read a bit about the cockpit thruhull above waterline mod but I can't find the info for a review. Can someone provide me a link?

 

Jay: Here is a link abt some work on the thru hulls...

 

Or all the links on this subject because I am scared to death not for cutting new holes but for properly filling the existing holes.

I have almost zero fiberglass experience.

Jay: Link

I'm thinking 4 coats Interlux Interprotect 2000 and maybe 3 coats Trinidad.

 

Jay: Link  to extensive images of hull work done in Stockton. 

Are we installing seacocks at the above waterline cockpit drain thruhulls such as Marelon for safety and weight issues?

Should I eliminate the transducer thing and lightning ground bar?

Jay: Does your transducer mount look like this or possibly with an even larger  blob hanging on the hull?  If you can replace your depth sounder with the newer types that don't need a hole in the hull -- yes that would be recommended.

 

I should have about $5,000 for the project and a few weeks off work. 

I guess the barrier coat and bottom paint to cost about $1500.

When I bought my 1974 W32 two years ago on the hard the boat has been known to never have a blister so I'm not expecting much if any so that shouldn't be an issue that I'd have to deal with.

Any advice is greatly welcomed.

Thanks

 

Carl:
research the above links as well as the members area FAQ and the WOA Picasa albums   .

Hope this helps.

jay

Carl:  I believe that the soda blasting was used on the 4 boats in stockton... sand blasting removes to much to fast - down't want to remove the gel coat  ... just down to the gel coat. 

Study up on how your yard will allow you to remove the bottom paint.  My yard in alameda now requires that the yard only sands the bottom paint - to limit the paint getting into the estuary. 

I'm thinking that removing to the gel coat will be the hard part of the job.  Do call the manufactor if you have questions on application / surface prep.

Jay

Carl Schaefer wrote:The previous owner told me today that there has only been 3 coats bottom paint since he had it all removed. I bought the boat 2 years ago on the hard and remember the black bottom looking almost as smooth at a school slate chalkboard, and as I mentioned above my boat has yet to have a blister.

So removing all the paint shouldn't be that bad.

Jay, I like how you routed your drain hoses.

A: Link

Does your boat have a Dynaplate?

A: Not at this time... about 10 years ago I replace it with a large zinc plate - probably NOT needed.  Pygmalion has a large copper grounding wire from the base of the mast to the zinc/dynaplate as a lightening path from mast to the sea.  This needs to be rethought as I've heard of the lightening actually blowing a hole through the hull.  - I sail in a very low risk lightening area (SF Bay) so do research and risk analysis on lightning solutions.

 

Where is your depth sounder sensor located?

A:  My thru hull transducer is located mid ship stb side - and installed so it "shines" straight down.  You need to keep all air bubbles out of the area between the transducer and the hull.

 

Carl: to be clear - the transducer is mounted inside the hull - so no hole thru the hull is needed.  My Navman depth sounder had both types of transducers - available. 

PS I don't recommend the Navman series of instruments.

 

Hope this helps