With the IMO 2020 rule a year and a couple of months away, scrubber systems are beginning to make waves among shipowners, with reports from DNV GL that over the past six months, more than 1,000 of them have been sold. In its latest weekly report, shipbroker Gibson said that “not so long ago, a lot of tanker and dry cargo owners had been fiercely opposed to the installation of exhaust gas cleaning technology.