Shipowners with scrubbers installed before year's end stand to benefit from IMO 2020 disruption, but others behind the curve may not be so lucky, Scorpio Bulkers' Robert Bugbee says.

When the clock strikes midnight into next year, International Maritime Organization will lower the limit for ship exhaust sulphur content to 0.5% from 3.5%.

Owners will adhere to this rule either by installing scrubbers or burning IMO 2020 compliant fuel.