Ships are responsible for 2.7% of world carbon dioxide emissions. The International Maritime Organization (IMO) estimates that these emissions could increase by 150-250% by the year 2050 in line with the expected continued growth in international seaborne trade. So how does one reduce such emissions since ships are international in nature and there are over a hundred different nations with different rules. How can one be fair and be green?

Ships are responsible for 2.7% of world carbon dioxide emissions. The International Maritime Organization (IMO) estimates that these emissions could increase by 150-250% by the year 2050 in line with the expected continued growth in international seaborne trade. So how does one reduce such emissions since ships are international in nature and there are over a hundred different nations with different rules. How can one be fair and be green?

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NASA, U.S. Navy and university researchers have successfully demonstrated the first robotic underwater vehicle to be powered entirely by natural, renewable, ocean thermal energy. Though not quite a perpetual motion machine it is close to that.

The Sounding Oceanographic Lagrangrian Observer Thermal RECharging (SOLO-TREC) autonomous underwater vehicle uses a novel thermal recharging engine powered by the natural temperature differences found at different ocean depths.

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The US EPA has finalized a rule setting tough engine and fuel standards for large US flagged ships, a major milestone in the agency’s coordinated strategy to slash harmful marine diesel emissions.

The regulation harmonizes with international standards and will lead to significant air quality improvements throughout the country. “There are enormous health and environmental consequences that come from marine diesel emissions, affecting both port cities and communities hundreds of miles inland. Stronger standards will help make large ships cleaner and more efficient, and protect millions of Americans from harmful diesel emissions,” said EPA Administrator Lisa P. Jackson. “Port communities have identified diesel emissions as one of the greatest health threats facing their people — especially their children. These new rules mark a step forward in cutting dangerous pollution in the air we breathe and reducing the harm to our health, our environment, and our economy.” (more…)

The US Environmental Protection Agency today announced the next steps in a coordinated strategy to reduce emissions from ocean-going vessels. EPA is proposing a rule under the Clean Air Act that sets engine and fuel standards for U.S. flagged ships that would harmonize with international standards and are expected to lead to significant air quality improvements throughout the country, especially near ports.

“These emissions are contributing to health, environmental and economic challenges for port communities and others that are miles inland. Building on our work to form an international agreement earlier this year, we’re taking the next steps to reduce significant amounts of harmful pollution from getting into the air we breathe,” said EPA Administrator Lisa P. Jackson. (more…)