Exhibit 99.1 Okeanis Eco Tankers Corp. – Unaudited Condensed Financial Statements for the Fourth Quarter and Twelve Month Period of 2023 ATHENS, GREECE, February 29, 2024 – Okeanis Eco Tankers Corp. ("OET" or "Company") (NYSE:ECO / OSE:OET) today reported unaudited condensed financial statements for the fourth quarter and twelve month period of 2023, which are attached to this press release. Selected Q4 2023 and Recent Highlights: · Time charter equivalent ("TCE", a non-IFRS measure*) revenue and Adjusted E ...