Even so, there's a reason all this stuff travels by boat. Aside from being the cheapest mode, it's also the most carbon-efficient method of shipping: A big ship will emit about 0.4 ounces of carbon dioxide to transport 2 tons of cargo 1 mile.
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Comparing the Carbon Footprints of Air and Sea FreightAirfreight generates 47 times more greenhouse gases than ocean shipping, for every ton-mile. While airplanes produce 500g of CO2 per metric ton of freight per kilometer of travel, cargo ships only produce 10-40 grams per kilometer.
While air freight relies on jet engines that consume large amounts of fuel, sea vessels typically use more fuel-efficient engines, reducing their impact on the environment. Sea freight transportation helps to build a more sustainable supply chain.
Maybe the crew was exhausted. Maybe the dry cement powder shifted too quickly. Maybe it was a straightforward swamping by atrocious waves. But 60% of ship accidents are due to errors made by what the industry curiously calls “the human element”, and much of that is due to fatigue.
Both modes of transportation, flying, and sailing, are statistically considered safe methods of overseas travel. When talking about statistics, airplane accidents average one in 1.6 million flights per year. Cruise ships, however, have a much fewer number of accidents per year.