A Seaport at Sunset is a 1749 oil painting on canvas by the French artist Claude-Joseph Vernet.

It depicts a sea port, and presumably a war scene.

A lightouse is visible, at the center right, while several people are on land, and a number of ships on sea, engaged on combat, with cannons smoke visible, are at the left.

It is held at the Timken Museum of Art, in San Diego.

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