In Nocturne, the viewer is greeted with a tranquil marine scene, characterized by soft blues and grays. The water reflects the dim light of the evening sky, creating a serene atmosphere. Silhouettes of boats can be seen gently bobbing on the water's surface.

The overall composition evokes a sense of calm and quietude. The painting is executed in oil on canvas, a medium that allows for rich texture and depth. Whistler's technique involves layering colors to achieve a harmonious blend, typical of the Impressionism style. The dimensions of the artwork are approximately 76 x 61 cm, making it a medium-sized piece.

Viewers can appreciate the delicate brushwork that captures the essence of twilight. James Abbott McNeill Whistler was an influential figure in the Impressionism movement, known for his innovative approach to color and light. Nocturne is part of a series of works that explore the theme of night and its effects on landscape. An interesting fact about this painting is that it reflects Whistler's interest in the relationship between art and music, as he often likened his works to musical compositions.