riceowls
Contributor
I am sorry, I am a numbers guy, and I don't believe even the order of magnitude number of visitors by ferry. If these are to be believed, over 10,000 tourists arrive at Cozumel per day, i.e., over 700 per ferry(assuming 15 a day). Even at full capacity 400/winjet, it does not make sense. I think the correct number of visitors on the ferry is perhaps between 500k-1mil - the same order as planes.Not sure how you get that "most passengers are either local going from mainland work or vice versa." Just because they look Mexican to you doesn't mean they are not national tourists day-tripping from Playa, or like you, flew in to Cancun and then ferried to Cozumel. The mid-day ferries are pretty full to be "mostly workers commuting."
My estimate is that ferries are, on average, only half full, and those that are more full are dominated by commuters.
I've been on many ferries, mainly either early morning or later in the afternoon. The last trip was late afternoon, 5 pm. The ferry was 2/3 full or so. There were on the order of 60-100 folks who came with bags that meant overnight stay and perhaps more than that folks dressed in what looked like a uniform (hotel uniforms, nurse scrubs, etc). The remaining folks may have been tourists with very light packs but likely be locals without clear uniforms.