Which of the following is NOT part of the standard navigational information that may be passed to a disoriented mariner?

• A. Radio beacon frequencies
• B. Charted buoy positions
• C. Magnetic or true bearings
• D. Marine incident logs

Answer: (D)

When a mariner is disoriented, the information you provide focuses on practical tools that help reestablish position and a safe track. Radio beacon frequencies are used to tune into navigation aids and identify their signals, which helps determine location and direction. Charted buoy positions are fixed references on nautical charts, so knowing where buoys should be lets you plot where you are relative to known markers. Magnetic or true bearings give a directional cue to a known object or beacon, allowing you to draw lines of position and pinpoint your location more accurately. Marine incident logs, however, are records of past events and do not offer real-time navigational cues or reliable guidance for reorienting a vessel, so they are not considered standard navigational information.