10 Things Cruise Lines Won’t Tell You

#10 “Don’t swim in our wake.” A typical one-week voyage by a medium-sized vessel leaves behind 210,000 gallons of blackwater — enough to fill about 10 backyard swimming pools, according to a recent study sponsored by non-profit advocacy group, Friends of the Earth. Of course, landlubbers flush the toilet too. But tight space on cruise ships often means waste treatment systems aren’t as effective at dealing with pollutants like ammonia, copper, zinc and “fecal coliform,” bacteria from feces, say critics. 

Thanks to Matthew from VCM for passing this along. Check out the full list from MarketWatch here.


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