Final answer:
The Coast Pilot is the publication that contains information about explosive anchorages in ports on the east coast of the United States, as it covers navigational and environmental details essential for maritime safety.
Step-by-step explanation:
The publication that would describe the explosive anchorages in the ports on the east coast of the United States is the Coast Pilot. The Coast Pilot is a series of books that provide information on navigational and environmental details pertaining to the waters of the United States, including port facilities and characteristics. It would contain information on explosive anchorages since these are critical details for navigational safety and are relevant to vessels operating in those areas.