FWIW, when I was last at Blue Angel they sent the No Problem out every morning at 11AM for 2 tank dives. It's a larger boat but it's still pretty fast.Please let us know how it goes. From looking through the list of Cozumel Dive Ops, I don't see any that advertise such a late departure (11 a.m.) other than afternoon dives that don't get back as soon as Caballito (3 p.m.). It does seem like a good timeframe for cruise passengers.