This document is an award from the Iran-United States Claims Tribunal regarding claims brought by SEDCO, Inc. against the National Iranian Oil Company and Iran. SEDCO leased drilling rigs to NIOC through its subsidiary SISA. SEDCO alleges that after contract termination in 1979, NIOC appropriated the rigs by failing to assist with export as required and continuing to operate the rigs in Iran. NIOC argues it did not take possession of the rigs until 1980 and was only obligated to use best efforts to help with export. The tribunal must determine whether NIOC's actions around contract termination and after amounted to a taking of the rigs for which compensation is due.