Where would you obtain data on currents for areas of the world not covered by the U.S. National Ocean Service?

Correct Answer: Option A — In the Sailing Directions

NGA Sailing Directions are the designated global authority for hydrographic and oceanographic data outside U.S. waters. When the National Ocean Service (NOS) coverage ends, the Sailing Directions provide the necessary information on currents, tides, and local navigational conditions required for safe passage planning, as specified in standard maritime navigation practices.