This is a cyanotype photograph depicting four sailors standing around a large gun on a ship. The image is entirely in shades of blue, characteristic of the cyanotype process. The sailors are all wearing dark uniforms and sailor hats. They appear to be operating or standing guard near the gun. The gun is a substantial piece of naval artillery, with visible wheels and a barrel. The background shows a section of the ship's interior, with a metal wall and a small window. The overall impression is one of a historical naval scene, captured in a unique and artistic photographic style. The number '11926' is written in the bottom left corner of the image.