It has been nearly six years since Danish marine-fuels giant OW Bunker collapsed into liquidation, and some arbitration battles over unpaid fuel bills have barely begun.

And at least one arbitration fight has yet to be filed, despite a looming time limit.

ING, the main secured lender to the bunker supplier, is now gearing up to take steps to move forward London proceedings against shipowners and operators before a deadline to commence arbitration closes, court records show.