USCG Navigation Problems: Master's License

This is an interactive test. Read each question and select the proper answer by clicking on the appropriate answer. If a "Y" appears, your choice is correct. If a "N" appears, more study may be in order.


82: If the Rosedale Gage reads -0.5 feet, what is the water level in relation to the low water reference plane? The low water reference plane (LWRP) for Rosedale, MS. is 3.0 feet.


158: Which daymark should you see as you approach French Point Light (mile 915.4 AHP)?


219: At 1630, you reach point A and come right to 204°T. Your engine speed is 12 knots. Your 1715, position is LAT 37°09.8'N, LONG 75°37.4'W. The current was __________.


247: What type of bottom is found at Long Sand Shoal?

    N a. Rocky
    N b. Muddy
    Y c. Hard
    N d. Sandy

257: At 0705, you change course to head for The Race. You wish to leave Race Rock Light bearing due north at 0.4 mile. If the current is 110°T, at 2.8 knots, and you are turning for 12.0 knots, what course (pgc) should you steer?

    N a. 252°pgc
    N b. 257°pgc
    N c. 265°pgc
    Y d. 271°pgc

280: Your 1752 position places you __________.

    N a. less than 0.5 mile eastward of York Spit Channel
    Y b. less than 0.5 mile westward of York Spit Channel
    N c. greater than 0.5 mile westward of York Spit Channel
    N d. greater than 0.5 mile eastward of York Spit Channel

425: At 0730, your position is LAT 41°10.5'N, LONG 72°32.2'W. From this position you steer course 286°psc with an engine speed of 9.0 knots. What is the approximate depth of water under your keel?

    N a. 67 feet (20.3 meters)
    N b. 62 feet (18.8 meters)
    N c. 57 feet (17.3 meters)
    Y d. 52 feet (15.8 meters)

487: At 0700, your gyro alarm sounds. What course should you steer by the standard magnetic compass in order to maintain your original heading of 078°T?

    Y a. 095°psc
    N b. 090°psc
    N c. 080°psc
    N d. 062°psc

503: What was the speed made good between 2114 and 2142?

    Y a. 11.4 knots
    N b. 11.7 knots
    N c. 12.0 knots
    N d. 12.3 knots

605: At 0915 ZT, on 26 July , 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 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?

    Y a. 0728, 7 August
    N b. 1528, 7 August
    N c. 0028, 8 August
    N d. 1528, 8 August

606: 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?

    Y a. 1932, 19 May
    N b. 0332, 20 May
    N c. 1032, 20 May
    N d. 1232, 20 May

641: 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?

    Y a. 0.5 mph
    N b. 1.5 mph
    N c. 5.7 mph
    N d. 8.5 mph

662: 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)

    N a. You will pass to the south of icebergs reported extending to 100 miles south of Cape Race Newfoundland.
    Y b. The shoals with a 25-mile radius around Sable Island will be a hazard.
    N c. You will reach the maximum northerly latitude at longitude 29°45'W.
    N d. The distance is measured in 60-mile segments using the length of a degree of latitude at the vertex.

689: You are turning for 10 mph and passing Hog Point, LA. (mile 297.5 AHP). Angola reports that the current at Red River Landing is 4.5 mph. Which statement is TRUE?

    N a. The main channel lies on the south side of the island you see ahead.
    N b. You are making 14.5 mph over the ground.
    Y c. An underwater stone dike has been constructed 0.5 miles upstream of Miles Bar Towhead.
    N d. You would expect to find the more favorable current near the broken red line in the river.

703: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?

    N a. List of Buoys and Daymarks
    N b. U.S.C.G. Light List
    N c. Army Corps. of Engineers Navigation Map
    Y d. None of the above

1007: On 30 July , your 1030 ZT DR position is LAT 17°46'N, LONG 139°30'W. You are on course 129°T, speed 24 knots. Determine your 1200 position using the following observations of the Sun.
ZONE TIME GHA DECLINATION Ho
1220 138°25.0' N 18°22.3' 88°43.3'
1226 139°55.0' N 18°22.2' 88°24.0'

    N a. LAT 17°24.0'N, LONG 138°59.8'W
    N b. LAT 17°21.6'N, LONG 138°56.2'W
    N c. LAT 17°18.7'N, LONG 139°07.6'W
    Y d. LAT 17°15.1'N, LONG 139°00.0'W

1138: After you get underway, what is the first river gage you will pass?

    Y a. Donaldsonville
    N b. Head of Passes
    N c. Baton Rouge
    N d. Red River Landing

1454: On 4 October , your 0734 zone time DR position is LAT 24°11.0'N, LONG 162°34.0'E. At that time, you observe the Sun bearing 105.5°psc. The chronometer reads 08h 36m 11s, and the chronometer error is 01m 46s fast. The variation is 7°W. What is the deviation of the standard compass?

    N a. 1.2°W
    N b. 1.9°E
    N c. 5.3°W
    Y d. 5.8°E

1564: As you approach Dean Island Light (mile 754.8 AHP), which type of daymark will be observed at the light?

    N a. Green triangle
    N b. Red and green banded square
    N c. Green square daymark
    Y d. Diamond-shaped green daymark

1652: On 16 April , in DR position LAT 28°07.0'N, LONG 81°47.0'W, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 073.5°psc. The chronometer reads 10h 53m 41s and is 02m 23s slow. Variation in the area is 11°E. What is the deviation of the magnetic compass?

    N a. 4.5°E
    N b. 4.9°W
    N c. 6.1°E
    Y d. 6.5°W

1772: What is your ETA at the Fulton Gage?

    N a. 1405, 12 Sept
    N b. 1052, 12 Sept
    N c. 0828, 12 Sept
    Y d. 0204, 12 Sept

1859: On 22 March , your 0519 ZT DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 094°T, at an observed altitude (Ho) of 30°15.0'. The chronometer reads 10h 16m 47s and is 02m 15s slow. What star did you observe?

    N a. Acamar
    Y b. Enif
    N c. Menkar
    N d. Rigel

2005: On 17 July , your 1951 zone time DR position is LAT 24°26.0'N, LONG 51°16.0'W. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?

    N a. Hadar, Deneb, Alphard
    N b. Regulus, Venus, Antares
    N c. Mars, Vega, Dubhe
    Y d. Kochab, Jupiter, Rasalhague

2018: On 11 November , your 0200 zone time DR position is LAT 26°32'S, LONG 154°16'E. You are on course 058°T at a speed of 21 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?

    N a. Polaris, Regulus, Rigel
    N b. Jupiter, Spica, Canopus
    N c. Saturn, Peacock, Rigel
    Y d. Mars, Betelgeuse, Miaplacidus

2061: As you approach mile 225 AHP, you notice on the map a black broken line crossing the river at mile 224.2 AHP. This line indicates __________.

    N a. ferry crossing
    N b. submarine crossing
    N c. gas pipelines
    Y d. power lines

2204: The Clinch River empties into which river?

    N a. Arkansas
    N b. Mississippi
    N c. Ohio
    Y d. Tennessee

2673: At 2221 your course is 222°pgc at a speed of 11.2 knots, when radar detects a buoy bearing 355° relative, at a range of 5.8 miles. The gyro error is 2°E. If you change course at 2226, what course should you steer to leave the buoy 1.0 mile abeam to port?

    N a. 206°pgc
    N b. 210°pgc
    Y c. 228°pgc
    N d. 231°pgc

2694: While on a course of 152°T, a light bears 9° on the port bow at a distance of 11.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to port?

    N a. 153°
    Y b. 158°
    N c. 163°
    N d. 167°

2706: While on a course of 216°pgc, a light bears 12° on the port bow at a distance of 11.2 miles. Which course should you steer to pass 2 miles abeam of the light leaving it to port?

    N a. 208°pgc
    N b. 210°pgc
    N c. 212°pgc
    Y d. 214°pgc

2889: While underway you sight a light 11° on your port bow at a distance of 12 miles. Assuming you make good your course, what will be your distance off the light when abeam?

    Y a. 2.3 miles
    N b. 3.1 miles
    N c. 3.9 miles
    N d. 4.5 miles

3104: You are turning 84 RPM, with a propeller pitch of 22 feet, and an estimated slip of 0%. What is the speed of advance?

    N a. 16.8 knots
    N b. 17.7 knots
    N c. 18.0 knots
    Y d. 18.2 knots

3471: You are underway on course 172°T at 18.5 knots. The current is 078°T at 2.8 knots. What is the speed being made good?

    Y a. 18.5 knots
    N b. 19.0 knots
    N c. 19.5 knots
    N d. 20.0 knots

11907: Your position is 3 miles due east of Montauk Point Light. What is the course to steer to arrive at LAT 41°00.0'N, LONG 71°30.0'W, if you are turning for 7.8 knots, the current is 130° at 1.2 knots, and a southerly wind causes 3° of leeway?

    N a. 112°T
    Y b. 108°T
    N c. 105°T
    N d. 102°T

13108: At 1103 you are in the entrance to Great Salt Pond on Block Island with buoy "5" close aboard. What is your ETA at light "1" at the mouth of the approaches to Lake Montauk if you make good 8.2 knots?

    N a. 1249
    N b. 1254
    N c. 1259
    Y d. 1310

14300: What is the height above the water of Government Island Upper Range, lower light?

    Y a. 20 feet
    N b. 24 feet
    N c. 38 feet
    N d. 42 feet

15057: At 0720, you are in the outer channel between buoy "1" and buoy "2" and change course to pass Townshend Ledge Lighted Gong Buoy "10A" abeam to port at 0.1 miles. What is the course to steer per gyro compass if a northerly wind causes 2° of leeway?

    N a. 120°pgc
    N b. 118°pgc
    N c. 116°pgc
    Y d. 114°pgc

15068: Long Sand Shoal __________.

    N a. shoals gradually on the north and south sides
    Y b. is hard and lumpy
    N c. shows breakers when northerly winds exceed 10 knots
    N d. has gray sand with scattered shells

15157: If there is no current, what is the course per gyro compass from your 1600 position to point "A" located 0.5 mile due east of Hog Island Lighted Bell Buoy "12"?

    N a. 190°pgc
    N b. 193°pgc
    N c. 196°pgc
    Y d. 199°pgc

15358: At 0507, Stratford Shoal Middle Ground Light bears 208°pgc. What is the position of your 0507 running fix?

    N a. LAT 41°04.8'N, LONG 73°05.0'W
    N b. LAT 41°04.9'N, LONG 73°04.8'W
    Y c. LAT 41°05.1'N, LONG 73°05.1'W
    N d. LAT 41°05.3'N, LONG 73°04.8'W

15458: You are delayed in sailing due to engineering problems. You get underway at 0630. A Coast Guard radio broadcast advises that an aircraft carrier will transit the Elizabeth River enroute Norfolk Naval Shipyard and a safety zone is in effect. Further information on how far you must remain from the carrier found is in __________.

    N a. PUB 117
    N b. Light List
    Y c. Coast Pilot
    N d. Chart Number 1

15610: At 1815, your position is LAT 37°01.0'N, LONG 75°42.7'W. If there is no current, what is the course per standard magnetic compass to arrive at a point 0.3 mile due north of North Chesapeake Entrance Lighted Whistle Buoy "NCA"
(LL#375)?

    N a. 249.0°
    N b. 251.5°
    N c. 255.0°
    Y d. 257.0°

15713: What do the dotted lines around Goose Island and Kimberly Reef represent?

    N a. Limiting danger
    N b. Breakers
    Y c. Depth contours
    N d. Tide rips

15766: From your 0745 fix, you change course to pass 1.0 mile south of buoy "WH" and estimate your speed at 7 knots. If the visibility clears, what is the earliest time you can expect to see Block Island North Light tower?

    N a. The tower is in sight at 0745.
    N b. 0750
    Y c. 0806
    N d. 0838

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

16642: Based on your 0500 fix, which statement is TRUE?

    N a. You are seaward of the 120 fathom curve.
    N b. The course made good between 0445 and 0500 was 345°T.
    Y c. You should alter course to port to clear Southwest Ledge Shoal.
    N d. A radar contact bearing 020°T at 4.8 miles is buoy "2A".

16714: What was the current between 0520 and 0600?

    N a. 201° at 1.0 knot
    N b. 201° at 1.5 knot
    N c. 021° at 1.0 knot
    Y d. 021° at 1.5 knots

16744: You continue to steer 285°pgc from your 0052 fix. Your speed is 9.2 knots. What is the course per standard magnetic compass?

    N a. 273.5°
    N b. 276.0°
    N c. 298.0°
    Y d. 302.0°