Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Navigation Problems (Set 15)
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Question 1 of 30
You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the speed being made good?
Browse Questions in Set 15
30 MCQs #1 You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the speed being made good? #2 You are underway on course 160°T at 10 knots. The current is 210°T at 0.9 knots. What is the speed being made good? #3 You are underway on course 204°T at a speed of 17.3 knots. You sight a light bearing 205°T at a radar range of 4.7 miles at 1222. If you change course at 1228, what is the course to steer to leave the light abeam to port at 1.5 miles? #4 You wish to make good a course of 053°T while turning for an engine speed of 16 knots. The set is 345°T, and the drift is 2.4 knots. What speed will you make good along the track line? #5 On 11 May in DR position LAT 28°13.7'N, LONG 168°36.3'E, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 283°psc. The chronometer reads 07h 13m 19s and is 02m 56s slow. Variation in the area is 13°E. What is the deviation of the standard magnetic compass? #6 You have steamed 216 miles and consumed 19.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 315 miles? #7 On 27 April 1983, at 1105 DST (ZD +4), what will be the predicted height of tide at Falkner Island, CT? #8 You have steamed 1124 miles at 21 knots, and consumed 326 tons of fuel. If you have 210 tons of usable fuel remaining, how far can you steam at 17 knots? #9 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) #10 Your vessel is underway on a course of 323.5°T at a speed of 16 knots. At 1945 a light bears 350°T. At 2010 the light bears 008.5°T. What will be your distance off when abeam of the light? #11 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? #12 Your vessel consumes 199 barrels of fuel per day at a speed of 14.5 knots. What will be the fuel consumption of your vessel at 10.0 knots? #13 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? #14 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 mid-latitude sailing? #15 At 0915 zone time on 11 May you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 19.5 knots. The distance is 4,276 miles. What is your estimated zone time of arrival at Seattle? #16 At 1820 zone time, on 21 March, you depart San Francisco, LAT 37°48.5'N, LONG 122°24.0'W (ZD +8). You are bound for Melbourne, LAT 37°49.2'S, LONG 144°56.0'E, and you estimate your speed of advance at 21 knots. The distance is 6,970 miles. What is your estimated zone time of arrival at Melbourne? #17 What is the period of time from around 1008 DST (ZD +4) at Canapitsit Channel, MA, on 7 August 1983, in which the current does not exceed 0.4 knot? #18 On 28 September in DR position LAT 27°16.7'S, LONG 113°27.2'W, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 273°psc. The chronometer reads 01h 17m 26s and is 01m 49s slow. Variation in the area is 6°W. What is the deviation of the standard magnetic compass? #19 The predicted time that the flood begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1430 and turn for 11 knots, at what point will you lose the ebb current? #20 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. #21 On 5 August your 0310 ZT position is LAT 09°02'N, LONG 21°08'W. You observe Polaris bearing 002°pgc. At the time of the observation the helmsman noted that he was heading 316°pgc and 329°psc. The variation is 15°W. What is the deviation for that heading? #22 You have steamed 540 miles at 22 knots and burning 618 barrels of fuel per day. You must decrease your consumption to 372 barrels per day with 299 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel? #23 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? #24 Your vessel is steering 074°T at 12 knots. At 0214 a light bears 115°T, and at 0223 the same light bears 135°T. What will be your distance off abeam? #25 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. #26 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. #27 You have steamed 201 miles and consumed 18.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 482 miles? #28 On 5 March 1983, at 0630 EST (ZD +5), what will be the predicted height of tide at Ocracoke, Ocracoke Inlet, NC? #29 While on a course of 283°pgc, a light bears 10° on the port bow at a distance of 8.3 miles. What course should you steer to pass 3.5 miles abeam of the light leaving it to port? #30 You are on a voyage from Corpus Christi, TX to Fort de France, Martinique. The distance from pilot to pilot is 2190 miles (2521 statute miles). The speed of advance is 15.0 knots. You estimate a layover in Charlotte Amalie, Virgin Islands, of 16.0 hours. If you take departure at 0654 (ZD +6), 27 November, what is your ETA (ZD +4) at Fort de France?
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