This document contains 42 questions asking to calculate various details of great circle sailing routes between pairs of geographic coordinates, including: initial and final course, great circle distance, and in some cases the position of the vertex. The questions provide latitude and longitude positions for the start and end points of each sailing route.

1. 2nd Mate Great Circle Sailing
questions

2. 22) Find the initial and final course and great circle distance
from Lizard point (49° 50’N, 005°12’W) to Barbados
(13°06’N,059* 20’W).
23)From a position ‘A’ off Cadiz in latitude 36°N longitude
007°W to a position ‘B’ off Montevideo in latitude 35°S long
056W, find the great circle distance and initial course.
24) Find the distance along the great circle, the initial
course and final course when sailing from 33° 50’S 023°
12’E to 20* 10 S 104°00’E.

3. 25)Find out Great circle distance, initial course, and position
of vertex between following positions”
From 19° 00’N 067° 00’W to 36° 00’N 006* 30’W.
26)Find the initial course and Great Circle distance from
27°30.0’N,011°45’E to 43°00.0’ N , 077°15’E.
27) Find the initial, final courses and the distance on the
great circle track between Lat 38°N 124°W and Lat 44°N,
164°E.

4. 28) From a position ‘A’ off Cadiz in latitude 36°N longitude
007°W to a position ‘B’ off Montevideo in latitude 35°S long
056°W, find the great circle distance and initial course.
29) Find the initial and final course and the shortest
distance from a position in lat.31° 40’S Long 142° 40’E to lat
12° 40’N long 126°30’E.
30) Find the initial course and the great circle distance
between 32° 12’N, 018° 15’E to 05° 40’N, 034° 20’W.

5. 31) From a position 00° 00’N 090° 00’E, the ship’s initial
great circle course was 037°. Determine the position and
the course of the vessel after she has traversed a distance
of 2100M along the great circle track.
32) Find the initial and final course, distance by great circle
sailing from a position ‘A’ in Lat 10° 00’S Long 150 00’W to a
position ‘B’ in Lat 40° 00’N Long 160 00’E.
33) a) Find the great circle distance and the initial course
from a position off Cape Palliser of 41° 40’S 175° 25’E to a
position 07° 00’N 080° 50’W off Panama.
b) Find the latitude and the course of the vessel where the
track crosses the meridian of 178 43’W.

6. 34) Vessel sailed on initial G.C.Course 210° (T) from 38 30’ S
025° 30’ W. Find the longitude arrived after sailing 1000nm
and the final course?
35)Find the initial course, final course and position of vertex
between position 30°N, 060°E to 50°S, 155°E.
36)Find the great circle distance and final course by Great
circle sailing from position ‘A’ in Lat 10° 00’S Long 150°
00’W to a position ‘B’ in Lat 40 N Long 160°00’E.

7. 37) Find the initial and final courses and the distance by a
great circle track from A: 25°00’N 074 ° 15’W to B: 45° 00’N
053°45’W.
38) Find the initial course and the great circle distance
between 32° 12’N 018°15’E to 05° 40’N 034° 20’W.
39) Find the initial and final courses and the distance by a
great circle track from A: 25° 00’N 074° 15’W to B: 45°00’N
053° 45’W.

8. 40) A vessel sailed from position A: 21° 30’N 073° 00’W to
position B: 40° 00’N 053° 30’W.Find the initial course, final
course and distance steamed by great circle track?
41) A ship sails on a great circle track from position 30° 20’N
085° 17’E to position 42 50’N 110° 28’E. Calculate the initial
course and great circle distance.
42) Find the great circle distance, initial and final courses,
from 10° 30’S 150° 00’W to 40° 00’N 159° 30’E.