Exhibit 21 TransMontaigne Oil Company List of Subsidiaries Name of Subsidiary State of Organization Trade Names - --------------------------------- --------------------- -------------------------- Continental Ozark Holding, Inc. Arkansas None Continental Ozark, Inc. Arkansas None COZ Pipeline, Inc. Arkansas None COZ Terminaling, Inc. Arkansas Razorback Terminaling Co. K123 Corporation Colorado None NORCO Pipeline, Inc. Arkansas None Razorback Pipeline Company Delaware None Republic Natural Gas Company Kansas None Sheffield Gas Processors, Inc. Colorado None Sheffield Operating Company, Inc. Nevada None