Clean Marine chief executive Nils Hoy-Petersen has suggested scrubber manufacturers need to focus on their long-term environmental credentials even as their near-term business prospects are boosted by IMO 2020.

Industry estimates — including those from classification society DNV GL — show more than 3,000 vessels are due to be installed with the exhaust gas cleaning systems by 2020 as shipowners look to take advantage of forecast falling prices for high-sulphur fuel oil (HSFO).