Exhibit 99.1 United Maritime Reports First Quarter 2023 Financial Results and Declares Quarterly Dividend of 0.075PerShareFinancialHighlightsoftheFirstQuarterof2023:■NetLossof4.9 million and loss per share (basic & diluted) of 0.64■Adjustednetloss1of3.7 million and adjusted loss per share1 of 0.48OtherHighlightsandDevelopments:■Quarterlycashdividendof0.075 per share for Q1 2023 - resulting in total cash dividends of 1.15pershareor8.7 million declared since November ...