And he's writing a web diary for CBBC Newsround.
In his latest entry, he explains how the people on board the ship are getting ready for fighting to start.
Diary entry six
I've met some of the younger people on board Ark Royal like 19-year-old Frances Guy.
She's never been to sea for any length of time before this two-month voyage.
But like all the younger, less experienced members of the crew, Frances is talking to the older people on board - like Wayne Godden, who's been in the Navy for 23 years.