The campaign follows the collapse of a crusade to raise $700m from the sale of notes that would have been backed by shares of Nasdaq-quoted compatriot Ocean Rig.

It’s unclear how much cash the Athens-based operator is looking for but observers note it has already lined up a $350m bridge loan and boasts a $100m credit line backed by Nordea.

Earlier in the day Bloomberg reported that chief executive George Economou has pledged to plough some of his cash into the company as well but this claim could not be confirmed.

Numerous