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.

48: The Clinch River empties into which river?

58: What daymark will you see as you approach Warnicott Bar Lt. (mile 351.3 AHP)?

84: What is the distance from the Amoco Docks at Baton Rouge, LA, to the mouth of the Ohio River?

105: On 19 January , your 0300 zone time DR position is LAT 22°13'N, LONG 40°19'W. You are on course 297°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0545 running fix?

188: At 2020, what is the course to steer to enter the inbound lane of North Chesapeake Entrance traffic separation scheme if a northwesterly wind causes 3° of leeway?

189: At 0645, Watch Hill Point (left tangent) bears 316.5°pgc at 2.75 miles. What was the speed made good between 0600 and 0645?

207: If your height of eye is 35 feet (10.7 meters), what is the approximate geographic range of Block Island North Light?

259: The south coast of Long Island Sound between Mattituck Inlet and Port Jefferson is __________.

358: From your 0410 fix, what is the course per standard magnetic compass to the entrance to York Spit Channel between buoys "37" and "38"?

421: At 0345, you set a course to depart New London Harbor. Assuming no set and drift, which standard magnetic compass course must you steer to stay in the middle of the channel?

424: From your 0530 position, you set a course of 271°psc with an engine speed of 9 knots. At 0645, Cornfield Safe-Water Buoy is abeam to starboard. What speed have you averaged since 0530?

472: 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?

485: 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.

675: You are planning a voyage from Godthab, Greenland, to Cayenne, French Guiana. Using chart WOXZC 5274, determine which statement is TRUE.

733: On 12 March , your 1846 zone time DR position is LONG 129°16.5'W. At that time you observe Polaris with a sextant altitude (hs) of 28°01.5'. The chronometer time of the sight is 03h 44m 10s, and the chronometer error is 01m 55s slow. The index error is 2.2' off the arc, and the height of eye is 59.8 feet (18.2 m). What is your latitude by Polaris?

840: On 29 October , in DR position LAT 41°12.0'N, LONG 50°18.9'W, you take an ex-meridian observation of the Sun's lower limb, near upper transit. The chronometer time of the sight is 03h 21m 12s, and the chronometer error is 01m 50s slow. The sextant altitude (hs) is 34°54.2'. The index error is 2.0' on the arc, and your height of eye is 45 feet. What is the latitude at meridian transit?

983: On 17 January , your 0730 zone time position was LAT 22°26.0'N, LONG 152°17.0'E. Your vessel was steaming on course 136°T at a speed of 17.0 knots. An observation of the Sun's lower limb was made at 1015 ZT. The chronometer read 00h 13m 23s and was slow 01m 49s. The observed altitude (Ho) was 40°25.7'. LAN occurred at 1222 zone time. The observed altitude (Ho) was 47°48.1'. What was the longitude of your 1200 zone time running fix?

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.

1088: On 9 June , your 0000 DR position is LAT 26°14.0'S, LONG 176°38.1'E. You are on course 223°T, speed 17.8 knots. You observed 4 celestial bodies. Determine the latitude and longitude of your 0630 running fix.

1246: Which of the following statements are TRUE?

1251: On 16 August , your 1600 ZT DR position is LAT 26°17.0'N, LONG 165°17.0'E. You are on course 301°T at a speed of 15 knots. What will be the zone time of sunset at your vessel?

1408: The horizontal clearance of the center span on the Baton Rouge RR and Highway 190 Bridge is __________.

1712: What is the distance from Cairo Point, IL, to Arkansas City?

1783: At 2048 ZT, on 13 October , in DR position LAT 44°02.8'S, LONG 146°58.3'E, 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?

1877: On 2 October , your 1845 DR position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the clouds at a sextant altitude (hs) of 63°29.1' bearing 237.5°T. The index error is 1.3' off the arc, and the height of eye is 42 feet. The chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe?

1914: On 14 January , your 0550 DR position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star bearing 192°T at an observed altitude (Ho) of 06°15.2'. The chronometer reads 08h 48m 51s, and is 01m 22s slow. What star did you observe?

2017: On 2 February , your 0400 zone time DR position is LAT 24°14.0'N, LONG 163°28.0'W. You are on course 322°T at a speed of 22 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?

2156: At 1300 ZT, on 9 May , your DR position is LAT 24°00'N, LONG 83°26'W. Determine the computed altitude (Hc) of the Sun for the assumed position (AP) nearest to the above given latitude and longitude, given a chronometer time of 07h 00m 00s.

2677: You sight a light 9° on your starboard bow at a distance of 21 miles. Assuming you make good your course, what will be your distance off the light when abeam?

2856: Your vessel is on a course of 034°T at 17 knots. At 0551 a light bears 056.5°T, and at 0623 the light bears 079°T. At what time and at what distance off will your vessel be when abeam of the light?

2873: Your vessel is on a course of 103°T at 14 knots. At 1918 a light bears 129.5°T, and at 1937 the light bears 148°T.

At what time and at what distance off will your vessel be when abeam of the light?

3058: The propeller on a vessel has a diameter of 20.9 feet and a pitch of 19.6 feet. What would be the apparent slip if the vessel cruised 447 miles in a 23 hour day (observed distance) at an average RPM of 108?

3077: If the speed necessary for reaching port at a designated time is 23.7 knots and the pitch of the propeller is 20.8 feet, how many revolutions per minute will the shaft have to turn, assuming a 7% negative slip?

3112: While enroute from Montevideo to Walvis Bay a vessel's course is 116°psc. The variation for the locality is 25°W and the deviation is 6°W. What is the true course made good if a southerly wind produces 1° leeway?

3455: You wish to make good a course of 230°T while turning for an engine speed of 12.5 knots. The set is 180°T, and the drift is 1.7 knots. What course should you steer?

3638: You desire to make good a true course of 007°. The variation is 5°E, magnetic compass deviation is 3°W, and gyrocompass error is 2°E. A southwest by west wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?

3646: The true course between two points is 041°. Your gyrocompass has an error of 1°W. You make an allowance of 2° leeway for a east-southeast wind. What gyro course should be steered to make the true course good?

10101: Your GPS position is LAT 36°59.0'N, LONG 75°48.6'W. What is the course per standard magnetic compass to a position one mile east of Cape Charles Buoy "14" (LAT 37°07.4'N, LONG 75°41.0'W)?

11303: At 0856 your GPS position is LAT 37°01.6'N, LONG 75°31.7'W. At 0945 your position is LAT 36°57.0'N, LONG 75°41.0'W. What was the speed made good between the fixes?

12301: You are on course 055° per standard magnetic compass when you sight Block Island Southeast Point Light in line with the Block Island Aero Beacon bearing 319° per standard magnetic compass. Based on this you __________.

12509: You are on course 027° per magnetic compass when you take the following bearings per magnetic compass: New Point Comfort Light "2" 253°

Horn Harbor Entrance Light HH 282°

Wolf Trap Light 348°

What is the position of the fix?

12602: You are on course 087° per standard magnetic compass (psc) when you take the following bearings: Falkner Island Light - 022.0°psc Horton Point Light - 111.5°psc Mt. Sinai Breakwater Light - 254.0°psc What is your position?

13109: At 1113 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 9.6 knots?

13905: The Ruins (LAT 41°08.5'N, L0NG 72°08.8'W) is __________.

15010: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.

15266: At 1210, you are in position LAT 41°14.3'N, LONG 72°16.5'W. What is the charted depth of water?

15359: Based on your running fix, you __________.

15464: What is the course per standard magnetic compass on the southern leg of York Spit Channel between buoys "15" and "23"?

15612: At 1920, Cape Henry Light bears 225°pgc, and Chesapeake Channel Tunnel North Light bears 288°pgc. If your heading is 268°T, what is the relative bearing of Chesapeake Light?

15627: What is the vertical clearance of the Natchez Highway Bridge (westbound) when the river level is the same as the Low Water Reference Plane (6.1 ft)?

16017: What is the approximate distance to New Bedford, MA, from your 0530 DR position, if your 0352 position was 7 miles from Bridgeport, CT?

16067: At 2118, you obtain the following information:

Cape Henry Light 151°pgc;

Cape Charles Light 033°pgc;

Thimble Shoal Light 291°pgc

What is your 2118 position?

16258: What is the course to steer per standard magnetic compass from the anchorage to point A, if easterly winds are causing 3° of leeway?

16312: Assuming no current, at what time can you expect to be abeam of Townshend Ledge Lighted Buoy?

16358: What is the distance from the anchorage to point "A"?

16464: At 0405, you increase speed. At 0500, your position is LAT 37°06.0'N, LONG 75°41.1'W. What is the approximate depth of the water under the keel?