Thomas Eakins, American, 1844-1916 – Shad Fishing at Gloucester on the Delaware River Philadelphia Museum of Art

The picture has something of this: people, transportation system, group, vehicle, mammal, cavalry, water, fisherman, river, man, watercraft, military, soldier, seated, lithograph, many, war, skirmish, recreation.
Perhaps it’s a painting of a group of people standing on a beach next to a body of water with a boat in the water and another.