Baur, Nicolaas – s Lands fregat ’Rotterdam’ op de Maas voor Rotterdam, 1807 Rijksmuseum: part 2

The picture has something of this: ship, watercraft, water, boat, sailboat, sail, transportation system, sea, ocean, wind, vehicle, ocean cruise, schooner, nautical, navy, navigation, yacht, mast.
Perhaps it’s a painting of a boat in a body of water with other boats in the water and onlookers on the other side of the water.