Submission of voucher. For contractors operating under more than one MSP Operating Agreement, the contractor may submit a single monthly voucher applicable to all its MSP Operating Agreements. Each voucher submission shall include a certification that the vessel(s) for which payment is requested were operated in accordance with Sec. 296.31(d) and applicable MSP Operating Agreements with MARAD, and consideration shall be given to reductions in amounts payable as set forth in Sec. 296.41(b) and (c). All submissions shall be forwarded to the Director, Office of Accounting, MAR-330, Room 7325, Maritime Administration, 400 Seventh Street, SW., Washington, DC 20590. Payments shall be paid and processed under the terms and conditions of the Prompt Payment Act, 31 U.S.C. 3901.