Shipowners have been placing their bets ahead of the IMO 2020 emissions regime, and it makes for good stories as they show their cards one by one — by deciding to install scrubbers, relying on refiners for a ready ­supply of low-sulphur fuel oil, or taking a high-end punt on LNG.

Many of the scrubber sceptics have been owners of smaller tonnage, who take the view of Pacific Basin Shipping chief executive Mats Berglund that scrubber installation is like “building an oil refinery on your ship”.