NAVTEX broadcasts are sent in categories indicated by what?

• A. A numeric code
• B. A date and time stamp
• C. A color code
• D. A single letter or identifier

Answer: (D)

NAVTEX uses a simple category indicator at the start of each broadcast to show what type of information the message contains. This category is represented by a single letter or identifier, which lets mariners quickly recognize the message’s purpose—such as weather-related notices, forecasts, or navigational warnings—and, if needed, filter the stream on their receiver. It’s not shown as a numeric code, a date/time stamp, or a color. The exact meaning of each letter is defined by the NAVTEX service for a region, so you’ll see the same idea everywhere, just with region-specific letter mappings.