The maritime industry is already the most energy efficient mode of transport of goods and people. This efficiency results from the critical mass it enjoys – transporting 23,000 containers at one go, on a single ship. Shipping gives the lowest emission cost per ton mile, so therefore, the carbon footprint of transporting, say, a shoe-box is much smaller if transported by sea as compared to road or other forms of transport. For this reason, shipping already transports over 80% of world trade...