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

• A. Charted range bearings
• B. Charted traffic separation scheme bearings
• C. Charted depth of water
• D. Weather forecast for port

Answer: (D)

Helping a disoriented mariner relies on information that directly supports fixing position and safe navigation. Charted range bearings provide a line of position to known features, letting them triangulate where they are. Charted traffic separation scheme bearings show their relation to the TSS so they can steer clear of busy lanes and avoid conflicts. Charted depth of water gives critical depth information to prevent grounding and to choose a safe route based on the vessel’s draft. A weather forecast for port, while valuable for planning, doesn’t directly aid in locating the vessel or navigating safely in the present situation, so it isn’t part of the standard navigational information passed in this context.