Deck 2014: Navigation Problems

1. A Because the latitudes are almost the same, a great circle track approximates a parallel sailing.
2. B The northern hemisphere vertex is approximately at longitude 42°26'W.
3. C The distance is measured by using the length of one degree of the meridian at the position of the vertex.
4. D A composite sailing must be plotted to remain south of a limiting latitude of 44°N.

Tip: press A-D to answer