Priming a Steel Hull

[DirtySquirrel]

This is my first post so hopefully it's in the right place.
Here is the question. I have a 39ft steel hull motorsailer and I am getting ready to have the bottom sandblasted. Any suggestions on a good rust inhibiting primer for the first coat. I have been getting a bunch of different opinions. Any input would really help!

[scottyt]

Originally Posted by DirtySquirrel

I have been getting a bunch of different opinions.

you will get lots of opinions here too, here is mine

sand blast it down, with fine sand. treat it with ospo ( phophoric acid ) then use epoxy or barrier coat to seal the steel then bottom paint

[mitchbrown]

the last time I was researching building a boat out of steel the popular coating at that time was coal tar epoxy so whatever the primer for that could probably be found out from the paint dealer when you make your purchase.

Mitch