Maybe it's just strange to me that cruise ships do not have the smoke stacks routed to the aft of the vessel. Why does your car have an exhaust at the rear?
just think on embark day, and any time you are in port and up on deck when the ship is not moving, all of those fumes and carcinogens are just floating around at the winds will?
just think on embark day, and any time you are in port and up on deck when the ship is not moving, all of those fumes and carcinogens are just floating around at the winds will?