The 1873 masterpiece Breezing Up, by Winslow Homer located in the National Gallery of Art in Washington DC is an oil on canvas painting that measures 23 3/13 X 38 1/6 in.. The primary subject of this painting is a man with three boys in a small wooden sail boat that is moving along with what appears to be a fairly choppy sea. At the center of this painting is the stern of the sail boat. The oldest of the boys is sitting on the high end of the stern with his knees up and his bare feet planted flat...
exert a mutual effort for their common delight. One adult is present, briefly privileged to share their pleasure. The day is sunny; the air and water are alive. Wind fills the sails, and the boat fairly shudders as it drives through the choppy sea. The thrust of air against the canvas pulls every line taut, and hands work to hold this living machine, quick with the breath of nature under control. Prown 87.

This is a nice description of the work. It seems that one of this paintings main focuses is the pleasure and beauty of children in nature.