Pursuant to a supply contract, Claimants supplied bunkers, ordered by Time Charterers (D1) to a Vessel and, being unpaid, commenced arbitration for the invoiced amount, against (D1) and Disponent Owners, who subsequently became bareboat charterers, (D2) . The Tribunal found that the contract definition of ‘Buyer’ was wide enough to cover Ds 1 and 2 and that a clause creating a maritime lien pursuant to US law, created one applicable outside the US, and which attached prior to D2’s acquisition of its interest. The Tribunal found Ds1 and 2 jointly and severally liable for the invoiced amount, interest and costs.