Exhibit 99.1 United Maritime Reports First Quarter 2023 Financial Results and Declares Quarterly Dividend of $0.075 Per Share Financial Highlights of the First Quarter of 2023: ■ Net Loss of $4.9 million and loss per share (basic & diluted) of $0.64 ■ Adjusted net loss1 of $3.7 million and adjusted loss per share1 of $0.48 Other Highlights and Developments: ■ Quarterly cash dividend of $0.075 per share for Q1 2023 - resulting in total cash dividends of $1.15 per share or $8.7 million declared since November ...