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180: On 4 July you observe the lower limb of the Sun at a sextant altitude (hs) of 25°29.8'. The index error is 3.1' off the arc. The height of eye is 48 feet (14.6 meters). What is the observed altitude (Ho)?
N a. 25°37.1' Y b. 25°40.2' N c. 25°42.8' N d. 25°44.3' 267: At 0802, Branford Reef Light bears 348°T at 0.75 mile, and the north point of Falkner Island bears 088°T at 6.7 miles. What were the set and drift since 0740?
N a. Set 040°T, drift .2 knot N b. Set 220°T, drift .2 knot Y c. Set 220°T, drift .6 knot N d. You are making good your intended course and speed. 330: Which chart could you use for greater detail of the area at the south end of York Spit Channel?
N a. 12254 N b. 12226 N c. 12224 Y d. 12222 363: After you enter Thimble Shoal Channel, you will alter course to pass between Trestle "A" and "B". Which channel should you use?
N a. Thimble Shoal Main Channel or the South Auxiliary Channel N b. Any of the channels but keep to the right hand side N c. Thimble Shoal Main Channel Y d. The South Auxiliary Channel 513: What is the distance from your 0200 position to the point where Twenty-Eight Foot Shoal lighted buoy is abeam to starboard?
N a. 7.3 miles N b. 7.1 miles Y c. 6.9 miles N d. 6.6 miles 562: At 0700, Falkner Island Light bears 023°pgc, and the range to the south tip of Falkner Island is 7.1 miles. What was the course made good since 0615?
N a. 087°T N b. 084°T Y c. 081°T N d. 078°T 732: On 3 January , your 1759 zone time DR position is LONG 60°53.2'W. At that time you observe Polaris with a sextant altitude (hs) of 22°55.8'. The chronometer time of the sight is 09h 57m 10s, and the chronometer error is 02m 26s slow. The index error is 2.9' off the arc, and the height of eye is 52.5 feet. What is your latitude by Polaris?
N a. 21°35.2'N N b. 21°52.5'N Y c. 22°03.6'N N d. 22°22.6'N 741: On 16 February , your 1845 ZT DR position is LAT 25°50.5'N, LONG 46°24.0'W. At that time you observe Polaris with a sextant altitude (hs) of 26°25.5'. The chronometer time of the sight is 09h 47m 30s and the chronometer error is 02m 16s fast. The index error is 2.5' off the arc, and the height of eye is 55.0 feet. What is your latitude by Polaris?
Y a. 25°38.0'N N b. 25°44.2'N N c. 26°00.1'N N d. 26°37.5'N 742: On 15 July , at 0447 ZT, your vessel's DR position is LAT 22°42'N, LONG 126°36'E. At approximately this time, you obtain a sextant altitude (hs) of Polaris reading 23°46.2' with an index error of 1.6' off the arc. Your chronometer reads 08h 48m 28s, and is 1m 16s fast. What is your latitude by Polaris, given a height of eye of 33 feet?
N a. 22°44.1'N N b. 22°46.2'N N c. 22°50.2'N Y d. 22°54.1'N 836: On 16 June , in DR position LAT 50°57.0'S, LONG 53°03.9'W (ZD+4), you take an ex-meridian observation of Acrux at lower transit. The chronometer time of the sight is 10h 08m 18s, and the chronometer error is 02m 12s fast. The sextant altitude (hs) is 23°49.0'. The index error is 1.1' off the arc, and your height of eye is 26 feet. What is the latitude at meridian transit?
Y a. 50°41.2'S N b. 51°02.2'S N c. 51°33.0'S N d. 51°41.2'S 976: On 7 November , your 0830 zone time position was LAT 27°36.0'N, LONG 162°19.0'W. Your vessel was steaming on course 289°T at a speed of 19.0 knots. An observation of the Sun's lower limb was made at 0945 ZT. The chronometer read 08h 43m 11s and was slow 01m 51s. The observed altitude (Ho) was 38°21.1'. Local Apparent Noon (LAN) occurred at 1138 zone time. The observed altitude (Ho) was 45°35.0'. What was the longitude of your 1200 zone time running fix?
Y a. 163°38.8'W N b. 163°34.0'W N c. 163°30.2'W N d. 163°26.0'W 1021: On 30 March , your 0145 DR position is LAT 29°30'S, LONG 122°45'E. You are on course 055°T at a speed of 22 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix.
N a. LAT 28°24.6'S, LONG 124°21.4'E Y b. LAT 28°39.9'S, LONG 124°18.6'E N c. LAT 28°41.5'S, LONG 124°41.5'E N d. LAT 29°20.1'S, LONG 123°41.0'E 1178: On 27 August , your 0900 zone time DR position is LAT 24°25.0'N, LONG 94°20.0'W. Your vessel is on course 071°T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1214 N b. 1208 N c. 1206 N d. 1158 1194: On 16 January your 0930 ZT DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your vessel is on course 238°T at a speed of 17.0 knots. What is the ZT of local apparent noon (LAN)?
Y a. 1145 N b. 1148 N c. 1152 N d. 1156 1252: On 13 August , your 0345 ZT DR position is LAT 21°35.0'
N, LONG 135°26.0'W. You are on course 052°T at a speed of 14 knots. What will be the zone time of sunrise at your vessel?
N a. 0443 N b. 0449 Y c. 0536 N d. 0540 1294: What are the light characteristics of Greenwood Light (mile 288.6 AHP)?
N a. Fixed red light Y b. 2 red flashes every 5 seconds N c. 1 red flash every 4 seconds N d. 2 white flashes every 4 seconds 1366: On which river is New Providence, TN located?
N a. Allegheny N b. Upper Mississippi N c. Ohio Y d. Cumberland 1392: On 3 February , your 0550 zone time DR position is LAT 26°16.0'N, LONG 112°05.0'W. Considering their magnitude,
azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Spica, Antares, Saturn N b. Vega, Antares, Dubhe N c. Venus, Regulus, Vega Y d. Spica, Kochab, Rasalhague 1420: What company does NOT have a marine facility along the river bank in Helena (mile 661 to 665 AHP)?
N a. Helena Port Terminal, Inc. Y b. Riceland Food Corps.. N c. Quincy Soybean Co. N d. Texas Eastern Pipeline Co. 1538: At 1032 on 24 June, you pass Carolina Landing Light(508.8 AHP). What has been the average current since 2350, 23 June, if you have been making turns for 9.0 mph?
N a. 8.5 mph N b. 5.7 mph N c. 1.5 mph Y d. 0.5 mph 1642: From your 2129 position you reduce engine speed to 14 knots. What is the course to make good from your 2129 position to arrive 0.3 mile north of Lighted Whistle Buoy "NCA" (LL#375) assuming no set and drift?
N a. 216°T N b. 219°T Y c. 222°T N d. 225°T 2676: While on a course of 019°pgc, a light bears 14° on the port bow at a distance of 15.3 miles. What course should you steer to pass 1.5 miles abeam of the light, leaving it to port?
N a. 006°pgc Y b. 011°pgc N c. 013°pgc N d. 015°pgc 2882: Your vessel is steering 096°T at 17 knots. At 1847 a light bears 057°T, and at 1916 the same light bears 033°T. What will be your distance off abeam?
N a. 9.9 miles N b. 10.7 miles Y c. 11.4 miles N d. 11.9 miles 3301: You have steamed 217 miles and consumed 23.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 362 miles?
N a. 33.8 tons Y b. 38.4 tons N c. 42.6 tons N d. 45.7 tons 3313: You have steamed 300 miles and consumed 34 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 700 miles?
Y a. 79.3 tons N b. 74.3 tons N c. 68.4 tons N d. 66.2 tons 3314: You have steamed 150 miles and consumed 17 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 350 miles?
N a. 12.82 tons N b. 29.41 tons N c. 34.00 tons Y d. 39.66 tons 3619: Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the northeast, producing a 4° leeway. What true course are you making good?
N a. 128°T N b. 136°T N c. 162°T Y d. 170°T 3637: You desire to make good a true course of 347°. The variation is 11°E, magnetic compass deviation is 7°W, and gyrocompass error is 4°W. A north by east wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 339°psc N b. 343°psc Y c. 347°psc N d. 351°psc 4001: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic compass heading of 143°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 350° 122.5° - 110° 239.5° - 230°
030.5° - 020° 152.0° - 140° 269.0° - 260°
061.5° - 050° 181.0° - 170° 298.0° - 290°
092.0° - 080° 210.0° - 200° 327.5° - 320°
Y a. 2.0°W N b. 1.5°W N c. 0.5°W N d. 0.0° 10608: At 1825 your GPS position is LAT 41°04.9'N, LONG 72°42.1'W. You are on course 085° per standard magnetic compass at a speed of 10 knots. At 1910 your GPS position is 1 mile due south of Twenty-Eight Foot Shoal Lighted Buoy. What were your set and drift?
N a. 233°T at 2.9 knots N b. 227°T at 2.5 knots Y c. 054°T at 2.8 knots N d. 051°T at 2.1 knots 10906: What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?
N a. +1.9 feet N b. -0.1 feet Y c. -0.4 feet N d. No correction is necessary 11402: At 1018 your position is LAT 41°14.4'N, LONG 72°07.2'W. At 1036 your vessels position is LAT 41°13.1'N, LONG 72°16.1'W. What was your true course and speed made good?
Y a. 259° at 22.6 knots N b. 245° at 23.1 knots N c. 079° at 22.8 knots N d. 065° at 25.5 knots 11802: What course should you steer by your standard magnetic compass (psc), between New Haven Light and Stratford Pt. Light, if the set and drift of the current are 345°T at 3.0 knots, and a northerly wind will cause 1° of leeway? Your engines are making turns for 18.0 knots.
N a. 245.0°psc Y b. 247.0°psc N c. 264.0°psc N d. 266.5°psc 12611: You are on course 262° per standard magnetic compass when you take the following bearings: Saybrook Breakwater Light - 338.5°psc Little Gull Island Light - 107.5°psc Horton Point Light - 240.0°psc What is your position?
N a. LAT 41°11.9'N, LONG 72°16.7'N Y b. LAT 41°12.6'N, LONG 72°17.2'W N c. LAT 41°13.0'N, LONG 72°17.7'W N d. LAT 41°12.1'N, LONG 72°17.3'W 15039: At 0725 you determined your vessel's position to be 37°15.5'N, 75°33.2'W. Assuming that you make good your course of 206° true and a speed of 18 knots, at what time would you expect to be abeam of Cape Charles Lighted Bell Buoy "14"?
N a. 0750 N b. 0754 Y c. 0758 N d. 0802 15060: At 0802, the radar range and bearing to Branford Reef Light are 350°pgc at 0.8 mile, and the north point of Falkner Island are 090°pgc at 6.7 miles. What were the set and drift that you encountered since 0740?
N a. Set 085°T, drift .2 knot Y b. Set 085°T, drift .6 knot N c. Set 265°T, drift .2 knot N d. Set 265°T, drift .6 knot 15116: According to your track line, how far off New Point Comfort Spit Light "4" will you be when abeam of this light?
Y a. 0.9 mile N b. 1.2 miles N c. 1.5 miles N d. 1.8 miles 15143: From your 2146 position, with a new engine speed of 12 knots, you wish to change course in order to pass southeast of Buoy "MP" at a distance of 2 miles. With a reported set of 320° true and a drift of 2 knots, which course should you steer to make good your desired course?
N a. 055°true Y b. 061°true N c. 066° true N d. 071°true 15469: At 1037, you are on course 010°T at 10 knots, when you take the following bearings:
Old Plantation Flats Light bearing 125°pgc
Wolf Trap Light bearing 338°pgc
New Point Comfort Light bearing 286°pgc
What is your 1037 position?
N a. LAT 37°15.9'N, LONG 76°07.1'W Y b. LAT 37°16.1'N, LONG 76°07.4'W N c. LAT 37°16.2'N, LONG 76°07.8'W N d. LAT 37°16.3'N, LONG 76°07.2'W 15707: At 0725, you are heading 054°T, and Stratford Point Light is abeam to port at 3.1 miles. The current is 135°T at 1.8 knots. If you make turns for an engine speed of 8 knots, which course must you steer to make good 048°T?
Y a. 035°T N b. 042°T N c. 047°T N d. 055°T 15767: Which statement describes the shore between Watch Hill Point and Point Judith?
N a. Low, rocky cliffs with heavily wooded hills inland Y b. Sandy beaches broken by rocky points N c. Sand dunes and beaches with a mud and sand bottom N d. Wooded, barren hills with isolated prominent buildings 15826: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
Y a. U.S.C.G. Local Notice to Mariners N b. U.S.C.G. Light List N c. Army Corps. of Engineers Navigation Chart N d. List of Buoys and Daymarks 16218: At 0830, Watch Hill Point bears 343°T at 3.5 miles by radar. What was the speed made good since 0745?
N a. 5.4 knots N b. 5.8 knots N c. 6.7 knots Y d. 7.1 knots 16315: At 0820, you change course to 301°psc and reduce speed to 7.5 knots. At 0900, you take the following visual bearings:
Branford Reef Light 023°psc
New Haven Light 293°psc
Tweed Airport Aerobeacon 332°psc
Your 0900 position is __________.
N a. LAT 41°11.9'N, LONG 72°50.6'W N b. LAT 41°11.9'N, LONG 72°49.5'W Y c. LAT 41°12.1'N, LONG 72°48.6'W N d. LAT 41°12.5'N, LONG 72°44.3'W 16346: After passing through the Race, enroute to Bridgeport, CN,
and Race Rock Light is 2 miles astern you notice an equal interval flashing red light on the starboard side. This light is __________.
N a. New London Airport Aerobeacon Y b. New London Harbor Light N c. New London Ledge Light N d. Bartlett Reef Light 16419: You estimate the current to be 160°T at 1.2 knots. What should your course and speed be in order to make good 000°
T at 10 knots?
Y a. 358°T at 11.1 knots N b. 358°T at 09.8 knots N c. 002°T at 11.2 knots N d. 002°T at 09.9 knots 16444: At 1042 you take the following round of bearings:
Cape Henry Light 259°T
Chesapeake Light 101°T
Cape Charles Light 006°T
From this position, you set course 070°T at a speed of 9.5 knots.
What is the course per standard magnetic compass?
N a. 069.5°psc N b. 060.5°psc Y c. 079.5°psc N d. 080.5°psc 16616: At 0130, your position is LAT 41°09.3'N, LONG 72°46.9'W when you change course to 086°T. If you make good 086°T,
what is the closest point of approach to Twenty-Eight Foot Shoal Lighted Buoy?
N a. 0.7 mile Y b. 0.9 mile N c. 1.1 miles N d. 1.2 miles 16639: You estimate the current to be 125° at 0.6 knot, and the wind is westerly causing 3° of leeway. What course should you steer per gyro compass to make good 347°T while turning for 12.5 knots?
Y a. 340° pgc N b. 343° pgc N c. 346° pgc N d. 349° pgc 16645: At 0630 you increase speed to 12.0 knots. At 0645 Race Rock Light bears 294°pgc. At 0700 Race Rock Light bears 293°pgc. Based on this, you should __________.
Y a. alter course to port N b. maintain course and speed N c. alter course to starboard N d. maintain course and reduce speed