Resolves YES if such an attack is mentioned in NATO, UN or by Russian officials. Resolves NO if there is no mention of such attack by the close date.

UPD 1: military vessels such as https://www.reuters.com/world/europe/russia-says-its-forces-destroyed-us-made-military-vessel-near-snake-island-2023-08-22/ are too small and don't qualify.

UPD 2: ships going between ports of Ukraine do count.
UPD 3: ferries on inland waterways don't count; the ship should be able to travel by sea.