Cargo and cruise ships represent 2.6 percent of global emissions and could reach 17 percent by 2050. Nearly all these ships use cheap dirty heavy oil with high sulphur content. International regulations aren’t helpful as they are lax and difficult to enforce. Fortunately, Maersk, the largest container shipping company in the world, has created the conditions for an industry-wide sectoral revolution by setting 2040 as a target to achieve net-zero emissions, requiring all new vessel acquisitions be carbon-neutral and has already ordered 12 green methanol powered ships. Concurrently, many new technological solutions are under development including ones associated with electric, wind and biofuel energy sources. Stringent territorial waters and docking standards, Maersk technological catalysts, financing of emerging remedies, could advance clean technologies quickly. Finally, open-loop scrubbers are widely used as a band-aid to remove sulphur from the exhausts to transfer the pollutants into the sea.