When is the earliest that I can apply before the start date of Marine OCC?

I am looking to apply for Marine OCC for the summer of 2010, and would like to know when the earliest I can apply is.
I am going to apply for OCC for the summer of 2010, and would like to know when the earliest I can apply is. YES, I have talked to a recruiter, today in fact. However, I forgot to ask him this. I already have the application so I'm ready to get started.