 Moodys Investors Service, Moodys today has placed on review for downgrade the B3 corporate family rating CFR of Navios Maritime Acquisition Corporation Navios Acquisition, NNA, its probability of default rating of B3-PD and the B3 rating on its 670 million senior secured 1st lien notes due 2021 and co-issued with Navios Acquisition Finance US Inc.The outlook for Navios Acquisition has been changed to Ratings Under Review RuR from Negative Neg. Todays action reflects primarily over 120 million of near-term secured bank debt maturities due 2020 including 32.5 million due in June 2020 that Navios Acquisition needs to address. 