Spanish original · English

Hover or tap underlined Spanish terms to see their translation and exam tip.

Día 15 de Abril de 2021. El Capitán calcula la distancia ortodrómica desde un punto de salida -A- en Nassau (Bahamas)= 25º 42,1´N – 076º 42,4´W y otro punto - B- de llegada al Sur del Cabo de San Vicente (Portugal)= 36º 53,8´N – 009º 00,0´W:15 April 2021. The Master works out the great circle distance from point A in Nassau (Bahamas) = 25º 42.1´N – 076º 42.4´W to point B south of Cape St Vincent (Portugal) = 36º 53.8´N – 009º 00.0´W:

Show the answer

Correct answer: d) 3464.5 nautical miles.

Why it is correct

ΔLong = 67º 42.4′. The formula gives about 3464 miles.

Why the others are not

  • a) It does not match the working.
  • b) It does not match the working.
  • c) It does not match the working.

How to work it out in the exam

  1. cos D = sin l1 sin l2 + cos l1 cos l2 cos ΔL, with south latitude negative.
  2. Turn D into minutes: each minute is a mile.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.