
Ocean Track Plotting
A  The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 12°36.0'N, LONG 128°16.0'E is 8664 miles, and the initial course is 306.6°T. Determine the latitude of the vertex.  37°30.2'N  37°48.2'N  37°39.6'N  37°53.6'N  Great Circle Sailing 
B  The great circle distance from LAT 38°17'N, LONG 123°16'W to LAT 35°01'N, LONG 142°21'E is 4330 miles, and the initial course is 300.9°T. Determine the latitude of the vertex.  47°35.2'N  47°40.5'N  47°24.7'N  46°54.8'N  Great Circle Sailing 
C  The great circle distance from LAT 24°25.3'N, LONG 83°02.6'W to LAT 35°57.2'N, LONG 5°45.7'W is 3966.5 miles. Determine the latitude of the vertex.  38°46.2'N  38°16.4'N  38°09.4'N  37°57.3'N  Great Circle Sailing 
D  The great circle distance from LAT 25°50'N, LONG 77°00'W to LAT 35°56'N, LONG 06°15'W is 3616 miles, and the initial course is 061.7°T. Determine the latitude of the vertex.  37°41.6'N  37°32.2'N  37°45.2'N  37°34.9'N  Great Circle Sailing 
C  The great circle distance from LAT 35°08.0'S, LONG 19°26.0'E to LAT 33°16.0'S, LONG 115°36.0'E is 4559 miles and the initial course is 121°T. Determine the latitude of the vertex.  44°29.1'S  46°18.2'S  45°30.9'S  43°41.8'S  Great Circle Sailing 
A  The great circle distance from LAT 35°57.2'N, LONG 05°45.7'W to LAT 24°25.3'N, LONG 83°02.6'W is 3966.5 miles and the initial course is 283.7°T. The latitude of the vertex is 38°09.4'N. What is the longitude of the vertex?  28°18.2'W  28°02.6'W  28°54.7'W  28°46.3'W  Great Circle Sailing 
D  The great circle distance from LAT 38°17.0'N, LONG 123°16.0'W to LAT 35°01.0'N, LONG 142°21.0'E is 4330 miles and the initial course is 300.9°T. The latitude of the vertex is 47°40.5'N. What is the longitude of the vertex?  173°04.6'W  167°18.0'E  173°04.6'E  167°18.5'W  Great Circle Sailing 
B  The great circle distance from LAT 25°50'N, LONG 77°00'W to LAT 35°56'N, LONG 06°15'W is 3616 miles, and the initial course is 061.7°T. Determine the longitude of the vertex, given the latitude of the vertex as 37°34.9'N.  25°53.2'W  25°59.0'W  26°03.4'W  25°49.8'W  Great Circle Sailing 
D  The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 22°36.0'N, LONG 128°16.0'E is 7801 miles and the initial course is 318°45' T. The latitude of the vertex is 49°20.6'N. What is the longitude of the vertex?  159°32'W  161°18'W  156°43'W  162°41'W  Great Circle Sailing 
B  The great circle distance from LAT 35°08.0'S, LONG 19°26.0'E to LAT 33°16.0'S, LONG 115°36.0'E is 4559 miles and the initial course is 121°T. Determine the longitude of the vertex.  26°50.9'E  65°45.9'E  72°18.3'E  69°19.1'E  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 08°36.0'N, LONG 126°17.0'E to LAT 02°12.0'S, LONG 81°53.0'W.  9076 miles, 067°T  9105 miles, 079°T  9015 miles, 067°T  9076 miles, 079°T  Great Circle Sailing 
A  Determine the great circle distance and initial course from LAT 27°51.0'N, LONG 71°41.0'W to LAT 49°45.0'N, LONG 06°14.0'W.  3214 miles, 046.9°T  3196 miles, 313.1°T  3231 miles, 041.4°T  3219 miles, 042.5°T  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 35°17.6'N, LONG 144°23.0'E to LAT 47°36.0'N, LONG 124°22.0'W.  3718 miles, 318°T  3946 miles, 312°T  3881 miles, 042°T  3931 miles, 048°T  Great Circle Sailing 
C  Determine the great circle distance and initial course from LAT 12°45.2'N, LONG 124°20.1'E to LAT 33°48.8'N, LONG 120°07.0'W.  6382.0 miles, 311.7°T  6231.3 miles, 309.7°T  6185.9 miles, 050.3°T  6248.0 miles, 048.3°T  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 37°47.5'N, LONG 122°27.8'W to LAT 33°51.7'S, LONG 151°12.7'E.  6324.2 miles, 310.3°T  6345.3 miles, 301.7°T  6398.0 miles, 298.3°T  6445.2 miles, 240.3°T  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 33°53.3'S, LONG 18°23.1'E to LAT 40°27.0'N, LONG 73°49.4'W.  6743.5 miles, 302.7°T  6750.8 miles, 235.5°T  6648.0 miles, 298.7°T  6763.0 miles, 304.5°T  Great Circle Sailing 
A  Determine the great circle distance and initial course from LAT 34°51.0'N, LONG 115°01.2'E to LAT 10°16.0'S, LONG 51°42.6'E.  4493 miles, 245.6°T  4598 miles, 245.6°T  4582 miles, 245.6°T  4436 miles, 245.3°T  Great Circle Sailing 
B  Determine the great circle distance and initial course from LAT 25°50.0'N, LONG 77°00.0'W to LAT 35°56.0'N, LONG 06°15.0'W.  3718 miles, 118°T  3616 miles, 062°T  3470 miles, 298°T  3518 miles, 028°T  Great Circle Sailing 
A  Determine the great circle initial course from LAT 29°46.0'S, LONG 30°26.0'E to LAT 31°52.0'S, LONG 115°22.0'E.  117°T  113°T  121°T  074°T  Great Circle Sailing 
A  Determine the great circle initial course from LAT 07°05.0'N, LONG 81°45.0'W to LAT 21°15.0'N, LONG 157°40.0'W.  290°T  128°T  326°T  217°T  Great Circle Sailing 
D  Determine the great circle initial course from LAT 37°12.6'S, LONG 73°58.0'W to LAT 10°33.0'S, LONG 142°08.0'E.  317°T  287°T  253°T  223°T  Great Circle Sailing 
B  Determine the great circle distance and initial course from LAT 35°08.0'S, LONG 19°26.0'E to LAT 33°16.0'S, LONG 115°36.0'E.  4682 miles, 059°T  4559 miles, 121°T  4688 miles, 126°T  4457 miles, 126°T  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 26°00.0'S, LONG 56°00.0'W to LAT 34°00.0'S, LONG 18°15.0'E.  3849 miles, 248°T  3841 miles, 068°T  3705 miles, 153°T  3805 miles, 117°T  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 24°52.0'N, LONG 78°27.0'W to LAT 47°19.0'N, LONG 06°42.0'W.  3389 miles, 042.4°T  3367 miles, 045.0°T  3457 miles, 053.3°T  3593 miles, 048.1°T  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 31°57.0'S, LONG 115°52.0'E to LAT 24°47.0'N, LONG 66°59.0'E.  4516 miles, 134.5°T  4378 miles, 336.8°T  4402 miles, 319.5°T  4407 miles, 314.5°T  Great Circle Sailing 
A  Determine the great circle distance and initial course from LAT 08°53.0'N, LONG 79°31.0'W to LAT 33°51.5'S, LONG 151°13.0'E.  7635 miles, 233.9°T  7809 miles, 247.0°T  7618 miles, 230.3°T  7763 miles, 247.0°T  Great Circle Sailing 
C  Determine the great circle distance and initial course from LAT 38°42.0'N, LONG 09°10.5'W to LAT 32°05.0'N, LONG 81°05.0'W.  3402.0 miles, 072.5°T  3412.6 miles, 085.8°T  3449.4 miles, 287.2°T  3432.0 miles, 278.3°T  Great Circle Sailing 
C  Determine the great circle distance and initial course from LAT 25°47.0'N, LONG 79°59.5'W to LAT 38°42.0'N, LONG 09°10.5'W.  3341.0 miles, 063°T  3427.8 miles, 061°T  3588.6 miles, 059°T  3347.0 miles, 063°T  Great Circle Sailing 
D  Determine the great circle distance and initial course from LAT 35°27.0'N, LONG 140°20.5'E to LAT 47°51.0'N, LONG 122°51.0'W.  4122 miles. 076°T  4136 miles, 076°T  4087 miles, 036°T  4115 miles, 045°T  Great Circle Sailing 
D  You are planning a voyage between Portland, LAT 46°05'N, LONG 124°00'W, and Korea via LAT 44°00'N, LONG 155°00'E. Which statement is TRUE? (Use gnomonic tracking chart WOXZC 5270)  Distance is measured in 60mile segments using the length of a degree of latitude at the midlatitude.  The vertex of the great circle track is north of the Aleutian Islands.  You can sail a great circle track between the two points.  You can steam on course 270°T, at latitude 52°N, between longitudes 149°W and 160°W in a composite sailing.  Great Circle Sailing 
B  You are on a voyage from Nome to Honolulu via Unimak Pass (LAT 54°30'N, LONG 164°30'W). The great circle track passes through a point at LAT 38°00'N, LONG 161°40'W. Using gnomonic chart WOXZC 5270, determine which answer is TRUE. (The great circle distance, Unimak Pass to Honolulu, is 2013 miles.)  The northern vertex of the great circle track would lie between Unimak Pass and Nome.  A great circle course would offer no significant advantage because the rhumb line course is close to 180°.  A great circle track results in a significant savings in distance when compared to a rhumb line.  Distance of the great circle track is measured by using the length of degree of latitude at the midlatitude of the track.  Great Circle Sailing 
D  You are on a voyage via position LAT 44°00'N, LONG 150°00'E to LAT 46°15'N, LONG 124°00'W. Using gnomonic chart WOXZC 5270, determine which statement is TRUE?  The Aleutian Islands are not a navigational hazard on the direct great circle track.  The northern hemisphere vertex is east of the arrival position.  The final course angle lies in the northeast quadrant.  A composite sailing with a limiting latitude of 51°N will clear the Aleutian Islands.  Great Circle Sailing 
B  You are planning a voyage from departure Seattle (LAT 48°30'N, LONG 125°00'W) to a position at LAT 44°00'N, LONG 161°00'E. Which statement is TRUE? (Use gnomonic chart WOXZC 5270.)  At your highest latitude, the sun will be visible at upper and lower transit if the voyage occurs on 21 June.  Military exercises north of 53°N, between 150°W and 165°W, will not affect your voyage.  The northern hemisphere vertex lies to the west of your arrival position.  You must plot a composite sailing to remain south of the Aleutians.  Great Circle Sailing 
D  Which statement about a great circle track between Cape Flattery (LAT 48°30'N, LONG 125°00'W) and Guam (LAT 14°00'N, LONG 145°00'E) is TRUE? (Use gnomonic tracking chart WOXZC 5270)  The entire track line is to the west of the Northern Hemisphere vertex.  Distance is measured by determining the length of a line in minutes of arc from the midpoint of the track to the point of tangency.  When plotted on a Mercator chart the great circle track will appear as an S curve with the curve reversing at the latitude of the point of tangency (30°N).  Military exercises being carried out within a 150 mile radius of LAT 47°10'N, LONG 137°30'W will interfere with the proposed track line.  Great Circle Sailing 
A  Using gnomonic tracking chart WOXZC 5270, determine which of the following statements about a voyage from Valdez, AK, to Hilo, HI, is TRUE.  A great circle track is not significantly shorter than a rhumb line track.  When plotted on a Mercator chart, the track line will be convex to San Francisco.  You will cross the Northern Hemisphere vertex where the track line crosses LAT 45°N.  Distance is measured by using the length of a degree of longitude at the midlatitude line.  Great Circle Sailing 
C  Using gnomonic tracking chart WOXZC 5270, determine which of the following statements about a voyage from San Francisco to San Bernardino Strait (LAT 13°00'N, LONG 125°30'E) is TRUE.  The entire track line is west of the Northern Hemisphere vertex.  Distance is measured using the length of a degree of longitude at the point of tangency.  You will cross the Northern Hemisphere vertex at the approximate longitude of 159°W.  A composite sailing should be used to avoid the Bonin Islands.  Great Circle Sailing 
C  On which voyage would a great circle track provide a significant savings in distance to steam, when compared to a rhumb line track? (Use gnomonic tracking chart WOXZC 5270.)  Christmas Island (LAT 2°00'N, LONG 157°30'W) to Singapore via LAT 3°00'N, LONG 126°00'E  San Francisco to Kodiak, AK  Guam (LAT 14°00'N, LONG 145°00'E) to Seattle via LAT 47°30'N, LONG 125°30'W  Valdez, AK, to the Marquesas Islands (LAT 8°00'S, LONG 140°00'W)  Great Circle Sailing 
B  In planning a North Pacific voyage, you wish to steam the minimum distance from LAT 48°30'N, LONG 124°45'W to LAT 44°00'N, LONG 150°00'E, while remaining south of 51°N latitude. Which track meets these requirements? (Use gnomonic tracking chart WOXZC 5270)  A Mercator sailing from departure to the midlongitude at 51°N, thence great circle to arrival  A great circle from departure to LAT 51°N, LONG 148°W, parallel sailing to LAT 51°N, LONG 171°W, then a great circle to arrival  A great circle between departure and arrival with parallel sailing between the longitudes where the great circle intersects 51°N  A great circle tangent to 51°N from departure to the midlongitude then a great circle to arrival  Great Circle Sailing 
D  On a North Pacific voyage, you wish to sail the shortest distance from LAT 46°05'N, LONG 124°00'W to LAT 44°00'N, LONG 150°00'E. You do not want to exceed 50°N latitude due to anticipated fog conditions. Which voyage plot meets these requirements? (Use gnomonic tracking chart WOXZC 5270)  A great circle between departure and arrival with Mercator legs north of the Aleutians  A great circle between departure and arrival with parallel sailing where the track intersects the 50°N parallel  A great circle from departure to the midlongitude at 50°N, then another great circle to arrival  A great circle to 50°N, 153°W, parallel sailing to 50°N, 173°W, then a great circle to arrival  Great Circle Sailing 
D  You are planning a voyage from LAT 48°30'N, LONG 125°00'W to Korea via LAT 48°30'N, LONG 153°00'E. Which of the following track lines would you select for the safest and most direct route? (Use gnomonic tracking chart WOXZC 5270)  Parallel sailing along 48°30'N  Rhumb line track between the two points  Great circle track line between the two points  Great circle to LAT 51°00'N, LONG 178°00'W, parallel sailing for 80 miles, then great circle to the via point  Great Circle Sailing 
C  You are planning a voyage by great circle from Reykjavik (LAT 63°30'N, LONG 24°00'W) to the Azores (LAT 39°30'N, LONG 29°00'W). Which statement is TRUE? (Use gnomonic tracking chart WOXZC 5274)  When plotted on a Mercator chart, the great circle track will be convex to the British Isles.  The Northern Hemisphere vertex lies south of Reykjavik.  The great circle track is not appreciably shorter than a rhumb line track.  The distance is measured in sixtymile segments based on the length of a degree of latitude at the midlatitude and midlongitude position.  Great Circle Sailing 
B  On a voyage via the southern tip of Nova Scotia (LAT 43°20'N, LONG 65°35'W) you wish to sail the shortest route to La Coruna, Spain (LAT 43°20'N, LONG 8°24'W). Which of the following will require you to plot a composite sailing? (Use gnomonic tracking chart WOXZC 5274)  Naval exercises using live ammunition being conducted within a 150 mile radius of LAT 49°00'N, LONG 20°00'W  Icebergs reported extending west to westnorthwest from LAT 47°00'N, LONG 35°00'W  Shoals extending 15 miles from Sable Island  Sea ice reported 68 miles ESE of St. John's, Newfoundland  Great Circle Sailing 
A  Your voyage commences off Cape May, NJ, at LAT 38°40'N, LONG 74°00'W, for LAT 44°00'N, LONG 10°00'W. Sea ice is north of 45°N and west of 45°W. Extensive naval exercises will be conducted within a 150mile radius of LAT 50°00'N, LONG 35°00'W. Which statement about a direct great circle route is TRUE? (Use gnomonic tracking chart WOXZC 5274.)  You must plot a composite sailing to remain south of the ice limits.  The shifting shoals northwest of Sable Island will be a navigational hazard on the track line.  The naval exercises will interfere with the direct great circle route.  The latitude of the great circle vertex is above 50°N.  Great Circle Sailing 
D  You are planning a voyage by great circle from LAT 38°00'N, LONG 73°00'W to LAT 49°00'N, LONG 06°00'W. Which of the following statements is TRUE? (Use gnomonic tracking chart WOXZC 5274)  You will reach the maximum northerly latitude at longitude 29°45'W.  You will pass to the south of icebergs reported extending to 100 miles south of Cape Race Newfoundland.  The distance is measured in 60mile segments using the length of a degree of latitude at the vertex.  The shoals with a 25mile radius around Sable Island will be a hazard.  Great Circle Sailing 
B  You are on a voyage from Cape May (LAT 39°50'N, LONG 74°45'W) to the English Channel (LAT 49°00'N, LONG 05°00'W). What will NOT prohibit the use of a great circle track from departure to arrival? (Use gnomonic chart WOXZC 5274.)  Icebergs north of 48°N and west of 49°W  The high latitude in which the vertex lies  Islands approximately 50 miles south of Cape Cod  Newfoundland  Great Circle Sailing 
A  A great circle track would be most advantageous when compared to the rhumb line track on which route? (Use gnomonic tracking chart WOXZC 5274)  Palm Beach, FL, to the English Channel  Recife, Brazil, to Monrovia  Natal, Brazil, to Reykjavik, Iceland  Cayenne (LAT 4°40'N, LONG 52°15'W) to Sao Tome (LAT 0°00', LONG 6°45'E)  Great Circle Sailing 
D  You are planning a voyage from Godthab, Greenland, to Cayenne, French Guiana. Using chart WOXZC 5274, determine which statement is TRUE.  Distance is measured by using the length of meridian at the point of tangency.  A great circle track will be considerably shorter due to the length of the voyage.  Godthab is located at the Northern Hemisphere vertex.  The rhumb line track approximates a great circle track.  Great Circle Sailing 
D  You are planning a voyage from Jacksonville, FL, to the Strait of Gibraltar. Using chart WOXZC 5274, determine which statement is TRUE.  The great circle track approximates a rhumb line track because there is little difference in the latitudes.  All of the courses lie in the northeast quadrant of the compass.  You will be east of the Northern Hemisphere vertex during the entire voyage.  None of the above are true.  Great Circle Sailing 
D  On which voyage would a great circle track be significantly shorter than a rhumb line track? (Use gnomonic tracking chart WOXZC 5274)  Boston to Sable Island  Dublin, Ireland (Irish Sea), to La Coruna, Spain (LAT 43°22'N, LONG 8°24'W)  Reykjavik, Iceland, to Lisbon, Portugal  Savannah, GA, to Lisbon, Portugal  Great Circle Sailing 
A  You are planning a voyage by great circle to Reykjavik, Iceland, via Cape Race, Newfoundland, LAT 46°30'N, LONG 53°00'W. Which statement is TRUE? (Use gnomonic tracking chart WOXZC 5274)  You will reach the northernmost latitude in the vicinity of Reykjavik.  The track line will be concave to Cape Farewell (Kap Farvel) when plotted on a Mercator chart.  The Northern Hemisphere vertex is in the vicinity of 49°W longitude.  The distance is measured using the length of a degree of latitude at the midlatitude and midlongitude position.  Great Circle Sailing 
A  You are planning a voyage by great circle from the mouth of the Delaware River (LAT 38°40'N, LONG 75°00'W) to Lisbon, Portugal. Which statement is TRUE? (Use gnomonic tracking chart WOXZC 5274.)  You will reach the northernmost latitude of the voyage in the vicinity of LONG 42°30'W.  The Northern Hemisphere vertex lies to the east of Lisbon.  The distance is measured in 60mile segments using the length of the degree of latitude crossed by the track line.  You must plot a composite sailing to remain south of icebergs reported north of 44°N.  Great Circle Sailing 
A  You are planning a voyage by great circle from LAT 59°00'N, LONG 07°00'W via LAT 38°00'N, LONG 61°30'W. Which of the following statements is TRUE? (Use gnomonic tracking chart WOXZC 5274)  All courses are in the southwest quadrant of the compass.  You are to the east of the Northern Hemisphere vertex.  Distance is measured by using the length of a degree of latitude at the midpoint of the track line.  When plotted on a Mercator chart the track line will be concave to Cape Farwell (Kap Farvel).  Great Circle Sailing 
D  You are planning a voyage from Cape May (LAT 38°45'N, LONG 74°45'W) to Lisbon (LAT 38°37'N, LONG 09°45'W). Which of the following is TRUE? (Use gnomonic chart WOXZC 5274)  Because the latitudes are almost the same, a great circle track approximates a parallel sailing.  The distance is measured by using the length of one degree of the meridian at the position of the vertex.  A composite sailing must be plotted to remain south of a limiting latitude of 44°N.  The northern hemisphere vertex is approximately at longitude 42°26'W.  Great Circle Sailing 
B  The great circle distance from LAT 25°50'N, LONG 77°00'W to LAT 35°56'N, LONG 06°15'W is 3616 miles, and the initial course is 061.7°T. The position of the vertex is LAT 37°34.9'N, LONG 25°59.0'W. The difference of longitude from the vertex to a point (X) on the great circle track is 10°W. Determine the latitude which intersects the great circle at point (X).  37°02.5'N  37°09.5'N  37°15.6'N  37°21.2'N  Great Circle Sailing 
D  The great circle distance from LAT 25°50'N, LONG 77°00'W to LAT 35°56'N, LONG 06°15'W is 3616 miles, and the initial course is 061.7°T. The position of the vertex is LAT 37°34.9'N, LONG 25°59.0'W. Determine the latitude intersecting the great circle track 600 miles west of the vertex, along the great circle track.  36°36.8'N  36°50.2'N  36°45.9'N  36°54.9'N  Great Circle Sailing 
B  You are on a great circle track departing from position LAT 25°50'N, LONG 77°00'W. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W. The distance along the great circle track from the vertex to a point (X) is 600 miles westward. Determine the position of point (X) on the great circle track.  LAT 36°50.4'N, LONG 38°25.6'W  LAT 36°55.6'N, LONG 38°30.0'W  LAT 36°47.5'N, LONG 38°21.8'W  LAT 37°02.3'N, LONG 38°34.4'W  Great Circle Sailing 
A  You are on a great circle track departing from LAT 25°50.0'N, LONG 77°00.0'W and your initial course is 061.7°T. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W. What is the distance along the great circle track between the point of departure and the vertex?  2664.9 miles  2420.0 miles  2735.1 miles  2583.2 miles  Great Circle Sailing 
D  A vessel at LAT 32°05.0'N, LONG 81°06.0'W, heads for a destination at LAT 35°57.0'N, LONG 5°45.0'W. Determine the distance by Mercator sailing.  4126.1 miles  4508.0 miles  3128.2 miles  3770.6 miles  Mercator Sailing 
C  Your vessel departs LAT 32°45'N, LONG 79°50'W, and is bound for LAT 34°21'S, LONG 18°29'E. Determine the distance by Mercator sailing.  5,021 miles  7,002 miles  6,884 miles  6,954 miles  Mercator Sailing 
C  You depart LAT 32°16.6'N, LONG 68°28.0'W. What is the course and distance as calculated by Mercator sailing to a position at LAT 43°12.2'N, LONG 55°39.0'W?  049.1°T, 955.1 miles  132.8°T, 896.2 miles  042.8°T, 896.2 miles  136.6°T, 955.1 miles  Mercator Sailing 
C  A vessel at LAT 11°22'S, LONG 009°18'E heads for a destination at LAT 06°52'N, LONG 57°23'W. Determine the true course and distance by Mercator sailing.  296°T, 3,825.3 miles  285°T, 3,825.3 miles  285°T, 4,154.2 miles  296°T, 4,154.2 miles  Mercator Sailing 
D  Your vessel receives a distress call from a vessel reporting her position at LAT 5°24'N, LONG 31°16'W. Your position is LAT 2°39'S, LONG 39°24'W. Determine the distance from your vessel to the vessel in distress by Mercator sailing.  669.3 miles  712.9 miles  699.2 miles  688.7 miles  Mercator Sailing 
B  Your vessel receives a distress call from a vessel reporting her position as LAT 35°01'S, LONG 18°51'W. Your position is LAT 30°18'S, LONG 21°42'W. Determine the true course from your vessel to the vessel in distress by Mercator sailing.  160°T  153°T  149°T  135°T  Mercator Sailing 
D  A vessel at LAT 38°36'N, LONG 11°36'W, heads for a destination at LAT 24°16'N, LONG 71°52'W. Determine the true course and distance by Mercator sailing.  254.4°T, 2,916.9 miles  285.6°T, 3,203.6 miles  236.4°T, 2,916.9 miles  254.4°T, 3,203.6 miles  Mercator Sailing 
A  You receive a distress call from a vessel reporting her position as LAT 30°21'N, LONG 88°34'W. Your position is LAT 24°30'N, LONG 83°00'W. Determine the true course and distance to the distress scene by Mercator sailing.  320°T, 460 miles  324°T, 460 miles  322°T, 455 miles  317°T, 470 miles  Mercator Sailing 
D  A vessel at LAT 49°45'N, LONG 6°35'W, heads for a destination at LAT 25°50'N, LONG 77°00'W. Determine the true course and distance by Mercator sailing.  253.0°T, 3648 miles  066.4°T, 3602 miles  268.6°T, 3483 miles  246.5°T, 3597 miles  Mercator Sailing 
D  A vessel at LAT 33°45'N, LONG 118°30'W, heads for a destination at LAT 21°15'N, LONG 157°36'W. Determine the true course and distance by Mercator sailing.  289.2°T, 2413 miles  109.8°T, 2196 miles  236.3°T, 2259 miles  250.2°T, 2216 miles  Mercator Sailing 
D  A vessel at LAT 18°54'N, LONG 73°00'E, heads for a destination at LAT 13°12'N, LONG 54°00'E. Determine the true course and distance by Mercator sailing.  247°T, 1161 miles  250°T, 1172 miles  256°T, 1136 miles  253°T, 1154 miles  Mercator Sailing 
D  A vessel at LAT 21°18.5'N, LONG 157°52.2'W, heads for a destination at LAT 8°53.0'N, LONG 79°31.0'W. Determine the true course and distance by Mercator sailing.  081°T, 4915.8 miles  081°T, 4617.5 miles  099°T, 4915.8 miles  099°T, 4617.5 miles  Mercator Sailing 
A  A vessel at LAT 21°32'N, LONG 160°30'W, heads for a destination at LAT 30°00'N, LONG 150°00'E. Determine the true course and distance by Mercator sailing.  281°T, 2733 miles  284°T, 2762 miles  273°T, 2692 miles  273°T, 2645 miles  Mercator Sailing 
B  A vessel at LAT 29°38.0'N, LONG 93°49.0'W, heads for a destination at LAT 24°38.0'N, LONG 82°55.2'W. Determine the true course and distance by Mercator sailing.  122°T, 648 miles  117°T, 658 miles  115°T, 637 miles  126°T, 665 miles  Mercator Sailing 
C  A vessel at LAT 40°42.0'N, LONG 74°01.0'W, heads for a destination at LAT 14°41.0'N, LONG 17°26.0'W. Determine the true course and distance by Mercator sailing.  118°T, 3066.5 miles  123°T, 3065.6 miles  118°T, 3365.0 miles  123°T, 3066.5 miles  Mercator Sailing 
D  A vessel at LAT 32°14.7'N, LONG 66°28.9'W, heads for a destination at LAT 36°58.7'N, LONG 75°42.2'W. Determine the true course by Mercator sailing.  348.3°T  235.2°T  058.2°T  301.8°T  Mercator Sailing 
D  A vessel at LAT 32°14.7'N, LONG 66°28.9'W, heads for a destination at LAT 36°58.7'N, LONG 75°42.2'W. Determine the distance by Mercator sailing.  300.2 miles  241.2 miles  270.2 miles  538.2 miles  Mercator Sailing 
A  A vessel at LAT 38°03.0'S, LONG 49°38.0'W, heads for a destination at LAT 41°26.0'S, LONG 38°32.0'W. Determine the true course by Mercator sailing.  111.5°T  113.5°T  158.5°T  160.5°T  Mercator Sailing 
D  A vessel at LAT 45°36.0'N, LONG 11°36.0'W, heads for a destination at LAT 24°16.0'N, LONG 73°52.0'W. Determine the true course and distance by Mercator sailing.  251°T, 3298.5 miles  251°T, 3951.6 miles  247°T, 3951.6 miles  247°T, 3299.3 miles  Mercator Sailing 
B  A vessel at LAT 10°22.0'S, LONG 7°18.0'E, heads for a destination at LAT 6°52.0'N, LONG 57°23.0'W. Determine the true course and distance by Mercator sailing.  296°T, 3825.3 miles  285°T, 4025.7 miles  285°T, 3825.3 miles  296°T, 4025.7 miles  Mercator Sailing 
A  You depart LAT 40°42.0'N, LONG 74°01.0'W, and steam 3365.6 miles on course 118°T. What is the longitude of your arrival by Mercator sailing?  17°41.0'W  24°29.0'W  22°58.0'W  10°46.0'W  Mercator Sailing 
B  You depart LAT 22°35.0'N, LONG 157°30.0'W, and steam 4505.0 miles on course 135°T. What are the latitude and longitude of your arrival by Mercator sailing?  30°30.5'S, 104°30.0'W  30°30.5'S, 102°35.3'W  32°20.0'S, 104°30.0'W  32°20.0'S, 102°35.3'W  Mercator Sailing 
B  A vessel steams 1650 miles on course 077°T from LAT 12°47'N, LONG 45°10'E. What is the latitude and longitude of the point of arrival by Mercator sailing?  LAT 19°02'N, LONG 72°44'E  LAT 18°58'N, LONG 72°52'E  LAT 18°54'N, LONG 72°58'E  LAT 19°06'N, LONG 72°36'E  Mercator Sailing 
A  A vessel steams 1106 miles on course 249°T from LAT 13°30.0'N, LONG 144°30.3'E. What is the latitude and longitude of the point of arrival by Mercator sailing?  LAT 06°54.0'N, LONG 127°08.0'E  LAT 06°50.0'N, LONG 127°13.0'E  LAT 06°46.0'N, LONG 127°17.0'E  LAT 07°01.0'N, LONG 127°02.0'E  Mercator Sailing 
B  You depart LAT 33°45.0'N, LONG 118°30.0'W, and steam 2216 miles on course 250°T. What is the longitude of your arrival by Mercator sailing?  LONG 156°08.0'W  LONG 157°31.0'W  LONG 156°36.0'W  LONG 157°21.0'W  Mercator Sailing 
C  You depart LAT 49°45.0'N, LONG 06°35.0'W, and steam 3599 miles on course 246.5°T. What is the longitude of your arrival by Mercator sailing?  LONG 78°22.6'W  LONG 78°14.0'W  LONG 77°02.8'W  LONG 76°36.2'W  Mercator Sailing 
A  You depart LAT 34°22'S, LONG 18°23'E, and steam 3174 miles on course 282°T. What is the longitude of your arrival by Mercator sailing?  LONG 40°33.5'W  LONG 40°19.5'W  LONG 40°17.3'W  LONG 40°18.2'W  Mercator Sailing 
D  You depart LAT 37°36'N, LONG 123°00'W, and steam 2022 miles on course 241°T. What is the longitude of your arrival by Mercator sailing?  LONG 163°18.2'W  LONG 154°18.3'W  LONG 163°28.2'W  LONG 156°51.7'W  Mercator Sailing 
D  A vessel steams 1082 miles on course 047°T from LAT 37°18.0'N, LONG 24°40.0'W. What is the latitude and longitude of the point of arrival by Mercator sailing?  LAT 49°30.0'N, LONG 06°22.0'W  LAT 49°33.0'N, LONG 06°25.0'W  LAT 49°39.0'N, LONG 06°31.0'W  LAT 49°36.0'N, LONG 06°28.0'W  Mercator Sailing 
B  A vessel steams 3312 miles on course 282°T from LAT 34°24'S, LONG 18°18'E. What is the latitude and longitude of the point of arrival by Mercator sailing?  LAT 22°42'S, LONG 43°14'W  LAT 22°55'S, LONG 43°05'W  LAT 22°39'S, LONG 43°17'W  LAT 22°47'S, LONG 43°10'W  Mercator Sailing 
C  A vessel steams 666 miles on course 135°T from LAT 40°24.0'N, LONG 74°30.0'W. What is the latitude and longitude of the point of arrival by Mercator sailing?  LAT 32°30.0'N, LONG 64°41.0'W  LAT 32°36.0'N, LONG 64°49.0'W  LAT 32°33.0'N, LONG 64°46.0'W  LAT 32°39.0'N, LONG 64°53.0'W  Mercator Sailing 
D  You depart LAT 28°55.0'N, LONG 89°10.0'W, enroute to LAT 24°25.0'N, LONG 83°00.0'W. What is the true course and distance by midlatitude sailing?  418 miles, 122°T  427 miles, 129°T  436 miles, 133°T  442 miles, 122°T  MidLatitude Sailing 
B  A vessel at LAT 20°10'N, LONG 122°00'E is to proceed to LAT 26°18'N, LONG 128°20'E. What are the course and distance by midlatitude sailing?  044.7°T, 509.7 miles  043.5°T, 507.3 miles  041.9°T, 503.6 miles  041.2°T, 501.0 miles  MidLatitude Sailing 
D  A vessel at LAT 07°05'N, LONG 81°45'W is to proceed to LAT 08°40'N, LONG 88°00'W. What are the course and distance by midlatitude sailing?  286.8°T, 387.4 miles  283.1°T, 381.2 miles  285.6°T, 385.0 miles  284.3°T, 384.6 miles  MidLatitude Sailing 
B  A vessel at LAT 20°00'N, LONG 107°30'W is to proceed to LAT 24°40'N, LONG 112°30'W. What is the course and distance by midlatitude sailing?  317.2°T, 397.0 miles  315.3°T, 394.0 miles  318.3°T, 399.0 miles  314.0°T, 389.0 miles  MidLatitude Sailing 
A  A vessel at LAT 14°10'N, LONG 61°00'W is to proceed to LAT 10°00'N, LONG 53°23'W. What is the course and distance by midlatitude sailing?  119.2°T, 512.0 miles  118.6°T, 508.0 miles  117.3°T, 503.0 miles  117.9°T, 504.0 miles  MidLatitude Sailing 
A  A vessel at LAT 28°20'N, LONG 16°00'W is to proceed to LAT 21°00'N, LONG 18°00'W. What is the course and distance by midlatitude sailing?  194.0°T, 453.0 miles  196.8°T, 450.0 miles  195.2°T, 451.0 miles  197.3°T, 448.0 miles  MidLatitude Sailing 
A  A vessel at LAT 28°00'N, LONG 116°00'W is to proceed to LAT 34°00'N, LONG 123°40'W. What is the course and distance by midlatitude sailing?  312°T, 533 miles  323°T, 428 miles  302°T, 539 miles  324°T, 453 miles  MidLatitude Sailing 
B  A vessel steams 720 miles on course 058°T from LAT 30°06.0'S, LONG 31°42.0'E. What are the latitude and longitude of the point of arrival by midlatitude sailing?  LAT 23°48'S, LONG 43°11'E  LAT 23°44'S, LONG 43°07'E  LAT 23°38'S, LONG 43°03'E  LAT 23°34'S, LONG 43°00'E  MidLatitude Sailing 
A  A vessel steams 576 miles on course 260°T from LAT 40°36'N, LONG 50°24'W. What are the latitude and longitude of the point of arrival by midlatitude sailing?  LAT 38°56'N, LONG 62°42'W  LAT 39°06'N, LONG 62°34'W  LAT 39°12'N, LONG 62°28'W  LAT 39°02'N, LONG 62°37'W  MidLatitude Sailing 
B  A vessel steams 580 miles on course 083°T from LAT 13°12'N, LONG 71°12'W. What are the latitude and longitude of the point of arrival by midlatitude sailing?  LAT 14°20'N, LONG 61°21'W  LAT 14°23'N, LONG 61°19'W  LAT 14°17'N, LONG 61°23'W  LAT 14°25'N, LONG 61°17'W  MidLatitude Sailing 
B  A vessel steams 666 miles on course 295°T from LAT 24°24'N, LONG 83°00'W. What are the latitude and longitude of the point of arrival by midlatitude sailing?  LAT 29°01'N, LONG 94°18'W  LAT 29°06'N, LONG 94°16'W  LAT 29°13'N, LONG 94°06'W  LAT 29°10'N, LONG 94°10'W  MidLatitude Sailing 
C  A vessel steams 640 miles on course 047°T from LAT 34°45'N, LONG 140°00'E. What are the latitude and longitude of the point of arrival by midlatitude sailing?  LAT 41°57'N, LONG 150°02'E  LAT 42°09'N, LONG 149°50'E  LAT 42°01'N, LONG 149°57'E  LAT 42°06'N, LONG 149°53'E  MidLatitude Sailing 
C  Your vessel receives a distress call from a vessel reporting her position as LAT 35°01.0'S, LONG 18°51.0'W. Your position is LAT 35°01.0'S, LONG 21°42.0'W. Determine the true course and distance from your vessel to the vessel in distress by parallel sailing.  270°T, 189.2 miles  090°T, 189.2 miles  090°T, 140.0 miles  270°T, 140.0 miles  Parallel Sailing 
D  You depart LAT 26°03'S, LONG 10°28'E, for LAT 26°03'S, LONG 01°16'W. What are the course and distance by parallel sailing?  270°T, 547.2 miles  090°T, 632.5 miles  090°T, 547.2 miles  270°T, 632.5 miles  Parallel Sailing 
B  Determine the distance from LAT 34°18'S, LONG 172°40'E to LAT 34°18'S, LONG 152°38'E, by parallel sailing.  995.2 miles  993.0 miles  998.6 miles  996.4 miles  Parallel Sailing 
A  You depart LAT 38°14'N, LONG 12°42'W, for LAT 38°14'N, LONG 46°09'W. What are the course and distance by parallel sailing?  270°T, 1576.5 miles  090°T, 1576.5 miles  270°T, 2868.5 miles  090°T, 2879.0 miles  Parallel Sailing 
D  You depart LAT 52°01'N, LONG 176°09'E, for LAT 52°01'N, LONG 178°46'W. What are the course and distance by parallel sailing?  090°T, 95 miles  270°T, 188 miles  270°T, 95 miles  090°T, 188 miles  Parallel Sailing 
C  You depart LAT 49°38'N, LONG 152°49'E, for LAT 49°38'N, LONG 176°12'E. What are the course and distance by parallel sailing?  270°T, 1204 miles  090°T, 1204 miles  090°T, 909 miles  270°T, 909 miles  Parallel Sailing 
A  You depart LAT 16°24'S, LONG 169°38'W, for LAT 16°24'S, LONG 174°52'E. What are the course and distance by parallel sailing?  270°T, 892 miles  090°T, 892 miles  090°T, 301 miles  270°T, 301 miles  Parallel Sailing 
B  Determine the distance from LAT 63°54.0'N, LONG 04°52.0'E to LAT 63°54.0'N, LONG 18°24.0'W by parallel sailing.  608.6 miles  614.2 miles  612.3 miles  610.9 miles  Parallel Sailing 
C  Determine the distance from LAT 19°54.0'N, LONG 166°36.0'E to LAT 19°54.0'N, LONG 157°54.0'W, by parallel sailing.  2006.9 miles  1990.6 miles  2002.8 miles  2204.6 miles  Parallel Sailing 
D  Determine the distance from LAT 23°24'S, LONG 13°54'E to LAT 23°24'S, LONG 42°48'W, by parallel sailing.  3119.3 miles  3124.5 miles  3126.6 miles  3122.2 miles  Parallel Sailing 
C  Determine the distance from LAT 59°12'N, LONG 14°00'W to LAT 59°12'N, LONG 03°20'W, by parallel sailing.  328.9 miles  325.4 miles  327.7 miles  324.2 miles  Parallel Sailing 
C  You depart LAT 25°54'N, LONG 9°38'E and steam 592 miles on course 270°. What is the longitude of arrival?  0°40'W  0°40'E  1°20'W  1°20'E  Parallel Sailing 
A  You depart LAT 38°12'S, LONG 12°06'W and steam 1543 miles on course 270°. What is the Longitude of arrival?  44°49'W  45°12'W  45°37'W  45°42'W  Parallel Sailing 
C  You depart LAT 51°48.0'S, LONG 178°35.0'W and steam 179 miles on course 270°. What is the longitude of arrival?  179°52'W  174°27'E  176°36'E  173°47'W  Parallel Sailing 
D  You depart LAT 50°06.0'N, LONG 153°06.0'E and steam 879 miles on course 090°. What is the LONG of arrival?  175°04.0'W  177°24.0'E  178°36.0'W  175°56.0'E  Parallel Sailing 
B  You depart LAT 15°48'N, LONG 174°06'E and steam 905 miles on course 090°. What is the LONG of arrival?  172°47'W  170°13'W  165°41'W  179°06'E  Parallel Sailing 