Photo: Global Maritime Forum When it comes to green financing of vessels it is not just about the design, but also operational efficiency and reporting to ensure lower emissions. Speaking at the Hellenic American & Norwegian American Chambers of Commerce annual shipping conference Michael Parker, top ship finance banker at Citibank, and a top architect of the Poseidon Principles, commented in their first report on meeting decarbonisation targets, saying, “We’ve learned a few things….but we won’t change the underlying principles until the IMO changes regulations.” Explaining year-to-year variations in AERs (Average Efficiency Ratios) the numeraire used by Poseidon Principles signatory banks to measure carbon intensity, he said that: “We are all learning…emissions is just as much about operations as it is about the design of the ship.”