Osmosis preventive treatment and antifouling on new boat

[Denis_FR]

Hi All,

I am glad to be part of the searayclub since I bought a SPX 190 IB - 2016 - Mercury 4.5MPI 200HP.
We enjoyed this summer on a lake in France and as the days are getting colder it went to our dealer's marina for winterizing. The boat will likely stay 6-7 months in their storage yard, the rest of the year it stays in the water. One of my surprised comparing to previous boats I owned is that hull was pretty durty (we had it cleaned up).
I realized at that time the hull had not been painted (on top of what is done in Factory), no antifouling done either.
Now here comes my question: my dealer is suggesting that I not only get the antifouling done but also a preventive anti-osmosis treatment.
What do you think ? I am not sure how much preventive anti-osmosis treatment is really required but from what I read it costs a lot more to 'cure' it, if it ever appears.
My second question is: do i really need to get the antifouling done and then every 2-3y ? I used to do that on my previous and older boat but it was staying in the water all year long.

Thanks for your help
Denis

 

[Captn TJ]

For a newer boat that only stays in the water for only 6 months I think the epoxy undercoating (anti-osmosis) is a bit overkill. As to the antifouling paint. If the hull has growth on it then of course I'd get it. Note: 2-3 yrs is pretty good for antifouling paints.

 

[Denis_FR]

For a newer boat that only stays in the water for only 6 months I think the epoxy undercoating (anti-osmosis) is a bit overkill. As to the antifouling paint. If the hull has growth on it then of course I'd get it. Note: 2-3 yrs is pretty good for antifouling paints.

Thanks for the swift response Captn TJ

 

[DougLas]

That year boat the hull should have vinyl ester in the gel coat. Check with the manufacture to find out. if so it does not need protestant for osmosis.