Pass Benchmark: 70% • Standard: USCG NMC / 46 CFR
USCG Deck Misc (Supplementary) (Set 3)
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Question 1 of 30
On 6 April your 1830 ZT DR position is LAT 26°33.0' N, LONG 64°31.0' W. You are on course 082°T at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1900 running fix.
Browse Questions in Set 3
30 MCQs #1 On 6 April your 1830 ZT DR position is LAT 26°33.0' N, LONG 64°31.0' W. You are on course 082°T at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1900 running fix. #2 On 4 December your 1500 ZT DR position is LAT 18°06.0' N, LONG 75°42.0' W. You are on course 020°T at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1548 running fix. #3 On 24 October your 0100 DR position is LAT 27°42' N, LONG 158°35' E. You are on course 085°T at a speed of 12 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0700 running fix. #4 On 19 September your 0300 zone time DR position is LAT 24°35' N, LONG 88°40' W. You are on course 288°T at a speed of 14 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. #5 On 19 November your 0200 zone time DR position is LAT 18°41' N, LONG 150°37' E. You are on course 014°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. #6 On 19 November your 0200 zone time DR position is LAT 20°29.0' N, LONG 150°21.3' E. You are on course 136°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix #7 On 28 May your 0200 DR position is LAT 19°16.5' S , LONG 119°24.0' W. You are on course 107°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. #8 On 16 April your 0200 zone time DR position is LAT 17°18' S, LONG 168°46' E. You are on course 236°T at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. #9 On 19 November your 0300 zone time DR position is LAT 19°23' N, LONG 151°37' E. You are on course 293°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. #10 At 0100 zone time on 23 September your DR position is LAT 24°25.0'N, LONG 83°00.0'W. You are steering course 315°T. The speed over the ground is 10.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1100 running fix? #11 On 4 June at 0630 ZT, morning stars were observed, and the vessel's position was determined to be LAT 26°15'S, LONG 121°20'W. Your vessel is steaming at 13.0 knots on a course of 246°T. A sextant observation of the Sun's lower limb is made at 0915 ZT. The chronometer reads 05h 14m 27s, and the sextant altitude is 25°57.8'. The index error is 2.1' off the arc, and the chronometer error is 0m 53s slow. Your height of eye is 39.0 feet. What is the intercept (a) and azimuth (Zn) of this sight using the assumed position method? #12 The speed of advance necessary to arrive in port at a designated time is 15.8 knots. The pitch of the propeller is 20.75 feet. You estimate 5% positive slip. How many RPM must you turn to make the necessary speed? #13 You must average 16.25 knots to reach port at a designated time. Your propeller has a pitch of 21'08", and you estimate 4% negative slip. How many RPM's must you average to arrive on time? #14 You are turning 100 RPM, with a propeller pitch of 25 feet, and an estimated slip of - 5%. What is the speed of advance? #15 You are turning 100 RPM, with propeller pitch of 25 feet, and an estimated negative slip of 5%. What is the speed of advance? #16 You are turning 90 RPM, with a propeller pitch of 24 feet, and an estimated slip of - 3%. What is the speed of advance? #17 You are turning 78 RPM, with a propeller pitch of 21 feet, and an estimated slip of - 7%. What is the speed of advance? #18 You are off the coast of Mexico and are taking a time tick for 1600. At approximately 1554, you hear the preparatory signal "VVVV de XDD" from the time signal station. Then you hear a series of 1 second dashes followed by a 9 second silent period and then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 03h 59m 56s. When compared to the chronometer, the comparing watch reads 04h 01m 22s, and the chronometer reads 04h 02m 11s. What is the chronometer error? #19 You are steering 318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E and the deviation table is extracted below. What will be the true course made good? DEVIATION TABLE Magnetic Heading Deviation 300° 2°E 315° 0 330° 2°W #20 You are steering 125°pgc. The wind is southwest by south causing a 3° leeway. The variation is 6°E, the deviation is 2°W, and the gyro error is 1°W. What is the true course made good? #21 You are steering 142°pgc to make good your desired course. The gyro error is 1°E . The variation is 8°W. What should you steer by standard magnetic compass to make good the desired course? #22 You are heading 328°pgc to make good a course of 332°T, allowing 3° leeway for westerly winds and 1°E gyro error. The variation is 17°E. What should your heading be by standard magnetic compass to make good 332°T. #23 At 1423 you are on course 072 T° at 12.2 knots, when you sight a rock awash bearing 070°T at a range of 3.6 miles. If you change course at 1427, what course would you steer to leave the rock 1.0 mile abeam to port? #24 At 2237 ZT on 14 July you are in DR position LAT 33°57' N, LONG 150°32' W, when you observe an amplitude of Saturn. The planet is about one Sun's diameter above the visible horizon and bears 258.6°psc. The variation is 14°E. What is the deviation? #25 You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 022°. #26 Your vessel is on a course of 144°T at 16 knots. At 0126 a light bears 166.5°T, and at 0152 the light bears 189°T. At what time and at what distance off will your vessel be when abeam of the light? #27 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? #28 Your vessel is on a course of 307°T at 20 knots. At 0914 a light bears 284.5°T, and at 0937 the light bears 262°T. At what time and at what distance off will your vessel be when abeam of the light? #29 Your vessel is on course 093°T at 15 knots. At 1835 a light bears 136°T, and at 1857 the same light bears 170°T. What was your distance off the light at 1857? #30 At 2048 ZT on 13 October you are in DR position LAT 44°02.8' S, LONG 146°58.3' E, when you observe an amplitude of Venus. The planet is about one Sun's diameter above the visible horizon and bears 222.2°psc. The variation is 15°E. What is the deviation?
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