Chart Plotting and Piloting Flashcards
6 cards from real OUPV practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Chart Plotting and Piloting flashcards as text
On a nautical chart, what does a magenta (purple) color typically indicate?
Answer: Lighted aids to navigation and caution areas
Magenta is used on nautical charts to highlight lighted aids to navigation, caution areas, and other important navigational features.
What navigational tool is used to measure distance on a nautical chart?
Answer: Dividers using the latitude scale
Dividers are used to measure distance on a chart by comparing the span to the latitude scale on the charts side, where one minute of latitude equals one nautical mile.
What does the abbreviation Fl(2) 6s mean on a nautical chart?
Answer: A group flashing light showing 2 flashes every 6 seconds
Fl(2) 6s indicates a group flashing light that produces 2 flashes in each period of 6 seconds.
When plotting a course on a chart, which reference direction does a magnetic course use?
Answer: Magnetic north
A magnetic course is referenced to magnetic north, which accounts for the local variation between true north and the magnetic north pole.
What does a triangle symbol on a nautical chart represent?
Answer: A fixed navigational aid or landmark used for piloting
A triangle on a nautical chart typically represents a fixed navigational aid, landmark, or triangulation point used for position fixing.
What is the purpose of a running fix in piloting?
Answer: To determine position using two bearings of the same object taken at different times
A running fix uses two bearings of the same object taken at different times, with the first bearing advanced along the course and distance traveled.