ATHENS, Greece, May 15, 2026 (GLOBE NEWSWIRE) -- Diana Shipping Inc. (NYSE: DSX), (the "Company"), a global shipping company specializing in the ownership and bareboat charter-in of dry bulk vessels, today announced that, through a separate wholly-owned subsidiary, it has extended the time charter contract with Oldendorff Carriers GmbH & Co. KG, for one of its Post-Panamax dry bulk vessels, the m/v Polymnia. The gross charter rate is US$20,000 per day, minus a 5.00% commission paid to third parties, for a p ...