The spot-rate premium for scrubber-fitted vessels has dropped below this year’s average as fuel price spreads continue to shrink due to Atlantic basin bunker costs, according to an analyst.

The global 20-ports average for high-sulphur fuel oil (HSFO) is at $453.50 per tonne, below $629.50 per tonne for very low-sulphur fuel oil (VLSFO), according to Ship & Bunker.

That creates a price spread of $176 between the two bunker fuel grades.