Question 170Navigation General

The correct answer is B) tidal currents. Pilot charts are used by mariners to obtain information about average wind conditions, magnetic variation, and the average limits of field ice, but they do not contain information about tidal currents. Tidal current information is typically found in separate tidal current tables or charts, not in pilot charts. The other options are incorrect because pilot charts do contain information about average wind conditions (A), magnetic variation (C), and the average limits of field ice (D), but they do not provide data on tidal currents.