Mexico's Transportacion Maritima Mexicana SA said it is in a solid financial position and would have no problem paying off $142 million in senior unsecured notes due Oct. 16. Responding to a downgrade in its local and foreign currency corporate debt and unsecured senior debt to B plus from BB minus by Standard & Poor's, TMM said it could reassure debt holders and stock holders it would continue to post improved cash flow. "We have full confidence that we can comply with all our commitments," TMM President Jose Serrano said in a statement. TMM said it believed S&P's had not taken into account $86.3 million it recently received from asset sales and the securitization of its assets.