Ocean Network Express (ONE), the container liner alliance of Japan's three largest boxship operators, becomes the latest to ask for a bunker surcharge due to escalating fuel prices.

The Singapore-based alliance said "progressive and significant inflation of fuel costs over recent months" is behind the move, with bunkers increasing more than 25% during 2018.

ONE, the conglomeration of 'K' Line, MOL and NYK, warned that prices could "escalate still further."