Final answer:
The information for a buoy's specific shape, such as an orange shape, is contained in navigational materials like charts or boating guides that follow international maritime buoyage standards.
Step-by-step explanation:
If a buoy has an orange shape on it, the information for that buoy's specific shape is typically contained in navigational materials such as charts, a local notice to mariners, or a boating guide that conforms to the International Association of Lighthouse Authorities (IALA) maritime buoyage system. The color and shape of a buoy are critical navigational features that indicate specific purposes such as signaling hazards, directing traffic, marking underwater cables, or serving as a general navigation marker. In the United States, the U.S. Coast Guard provides details on the various types of buoys and what their colors and shapes signify.