Boats In The Harbour At Evening Caspar David Friedrich (1774-1840)

The picture has something of this: water, watercraft, vehicle, transportation system, dawn, sunset, sea, beach, ocean, ship, sailboat, recreation, fishing boat, seashore, landscape, river, evening, harbor.
Perhaps it’s a painting of a group of boats in a body of water with a purple sky in the background and a few boats in the water in the foreground.