Great Eastern Shipping is sounding a little disillusioned with scrubber economics after the price differential between high-sulphur and low-sulphur fuels tightened up.

The largest private Indian vessel owner is pressing on with all but one scheduled retrofit of the exhaust cleaning systems however.

Chief financial officer G Shivakumar told analysts the company had already installed scrubbers on an aframax and an LR1 tanker last year.