Applied Research Laboratories, The University of Texas at Austin, Austin, Texas, is awarded an $8,141,445 cost-plus-fixed-fee contract for the Ownship Vulnerability Development. This contract provides for research focused on two complementary technical thrusts. The first will develop algorithms to assess the probability of detection of underwater sound sources by estimating the background noise level relative to platform signal level and using this information in a decision aid. The second thrust will employ numerical modeling and the development of experimental procedures and apparatus to measure the vibroacoustic response of materials for Navy applications. This portion of the effort will develop detailed analytic and numerical models to predict those responses and then to assess the accuracy of those models for their use in design studies. Work will be performed in Austin, Texas, and is expected to be completed in February 2029. The total cumulative value of this contract, including a 60-month base period with no option periods, is $8,141,445. Fiscal 2023 research, development, test and evaluation (Navy) funds in the amount of $420,000 are obligated at time of award. Funds in the amount of $20,000 will expire at the end of the current fiscal year. This contract was competitively procured under N0001423SB001 entitled “Long Range Broad Agency Announcement (BAA) for Navy and Marine Corps Science and Technology.” Since proposals are received throughout the year under the long-range BAA, the number of proposals received in response to the solicitation is unknown. The Office of Naval Research, Arlington, Virginia, is the contracting activity (N0001424C1315).