[callesgg]

[removed]

[crazygringo]

If the crew were on land they'd still be eating three meals a day.

So I don't see how food factors into this. It doesn't really matter if they're eating at another job on shore, or eating while crewing a ship.

[StockHuman]

For what it’s worth, any sailing vessel beats any diesel container ship in ocean pollution. That, and ballast tank contamination, though that is not unique to any propulsion type, but instead to ship design.