Ocean Ships Inc., Houston, Texas (N3220517C3100), is awarded a $49,716,606 modification under a previously awarded firm fixed-price contract to fund the fourth one-year option period for the operation and maintenance of six oceanographic survey ships (T-AGS) and navigation test support ship USNS Waters (T-AGS 45). The previously awarded contract includes a 12-month firm period of performance, four 12-month option periods, and one six-month option period, which, if exercised, would bring the cumulative value of this contract to $507,084,242. Work commenced at sea, June 1, 2018, and is expected to be completed, if all options are exercised, by Sept. 30, 2022. Navy operation and maintenance funds in the amount of $49,716,606 are obligated for fiscal 2022, and will expire at the end of that fiscal year. The contract was competitively procured with proposals solicited via the Federal Business Opportunities website and five offers were received. Military Sealift Command, Norfolk, Virginia, is the contracting activity.