This week’s ship.energy podcast focuses on vessel design and retrofit options to meet forthcoming emission regulations. Mark Williams is joined by Jonathan Strachan, Director of Ship Design and Engineering at Houlder Ltd. He and Mark discuss why today is a great time to be a naval architect; how ship owners and designers can future-proof their vessels; financial and other constraints on upgrading the global fleet; the limits of retrofit and what proportion of the global fleet may have to be scrapped as the new emission regulations come into force.