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.
35: What are the dimensions of the channel maintained at Baton Rouge, LA?
N a. 30 feet x 300 feet Y b. 45 feet x 500 feet N c. 30 feet x 500 feet N d. 40 feet x 300 feet 79: The map shows a circle with two black quadrants located at mile 846.4 AHP. What does this indicate?
Y a. A river gage N b. A bulletin Board N c. The grain elevator at Bunge Grain N d. A culvert with a sluice gate 111: As you pass Solitude Lt. (mile 249.0 AHP) which dayboard would you see?
N a. Green square Y b. Green diamond N c. Red triangle N d. Red diamond 206: At 1850, you obtain the following bearings and distances:
Montauk Point 189°pgc 8.7 miles
Watch Hill Light 340°pgc 5.7 miles
What true course did you make good between 1830 and 1850?
Y a. 293°T N b. 297°T N c. 299°T N d. 305°T 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. 299: At 1930, your vessel is between York River Entrance Channel Lighted Buoys "1YR" and "2". From this position, you change course to 142°pgc at an engine speed of 8.0 knots. At 2001, you obtain the following information:
Chesapeake Channel Tunnel North Light - 131°pgc; Thimble Shoal Light - 248°pgc
What were the set and drift between 1930 and 2001?
Y a. 127° at 0.5 knot N b. 127° at 1.1 knot N c. 307° at 1.1 knot N d. 307° at 0.5 knot 439: At 0337, fog closes in and you anchor under the following radar ranges and bearing:
South tip of Watch Hill Point 3.0 miles
East point of Fishers Island 1.4 miles
Latimer Reef Light 331°T
What is the approximate depth of water at your anchorage?
N a. 135 feet (40.9 meters) N b. 120 feet (36.4 meters) Y c. 100 feet (30.3 meters) N d. 83 feet (25.2 meters) 571: At 0845, you are approaching the entrances to Thimble Shoal Channel. What channel must you use?
N a. The South Auxiliary Channel or Thimble Shoal Channel, but you must remain on the right hand side of the channel. Y b. The South Auxiliary Channel since your draft is less than 25 feet (7.6 meters) and you are not a passenger vessel. N c. The North Auxiliary Channel since you are going to turn to a northerly heading near buoy "12". N d. You are not permitted to use any of the channels, but must remain outside the buoyed channel line. 579: Which loran line of position will serve as a danger reading on the loran to keep you west of the submerged obstruction at LAT 37°24.2'N, LONG 76°03.7'W, after you leave York Spit Channel?
Y a. Not less than 9960-X-27246 N b. Not more than 9960-Y-41595 N c. Not less than 9960-Y-41595 N d. Not less than 9960-Z-58622 581: At 1119, Wolf Trap Light bears 268°T at 4.4 miles by radar. What were the set and drift since your 1037 fix?
Y a. 358°, 0.7 knot N b. 358°, 0.5 knot N c. 178°, 0.7 knot N d. 178°, 0.5 knot 593: What is the length of the trip?
N a. 1195.4 miles N b. 1223.1 miles Y c. 1520.1 miles N d. 1657.8 miles 736: On 6 March , your 1854 zone time DR position is LAT 23°51.5'N, LONG 73°14.0'W. At that time you observe Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is 11h 52m 40s, and the chronometer error is 01m 56s slow. The index error is 5.0' on the arc, and the height of eye is 43.5 feet (13.3 meters.) What is your latitude by Polaris?
N a. 23°29.5'N Y b. 23°36.3'N N c. 23°49.9'N N d. 24°02.9'N 826: On 5 May , in DR position LAT 38°34.5'N, LONG 124°20.7'W, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 07h 59m 10s, and the chronometer error is 01m 10s slow. The sextant altitude (hs) is 67°27.0'. The index error is 1.4' on the arc, and your height of eye is 30 feet. What is the latitude at meridian transit?
N a. LAT 38°26.4'N N b. LAT 38°30.2'N Y c. LAT 38°36.0'N N d. LAT 38°41.2'N 829: On 8 May , in DR position LAT 30°26.0'N, LONG 46°55.1'W, you take an ex-meridian observation of Dubhe. The chronometer time of the sight is 11h 10m 54s, and the chronometer error is 01m 18s slow. The sextant altitude (hs) is 58°35.0'. The index error is 1.5' on the arc, and your height of eye is 44 feet. What is the latitude at meridian transit?
N a. LAT 30°12.5'N Y b. LAT 30°19.8'N N c. LAT 30°27.6'N N d. LAT 30°35.8'N 1197: On 16 November , your 0800 ZT DR position is LAT 25°11.0'N, LONG 117°41.0'W. Your vessel is on a course of 252°T at a speed of 14.5 knots. What is the ZT of local apparent noon (LAN)?
N a. 1135 Y b. 1139 N c. 1143 N d. 1146 1406: Which of the following describes the river at Cypress Bend, mile 569.0 AHP?
N a. There are revetments on both banks. Y b. The river is three tenths of a mile wide. N c. There is dredge spoil on both banks. N d. There is a turning basin located on the LDB. 1660: On 23 June , in DR position LAT 21°39.0'S, LONG 106°28.0'W, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 078°psc. The chronometer reads 02h 14m 39s and is 01m 43s slow. Variation in the area is 9°W. What is the deviation of the standard magnetic compass?
N a. 2.8°E N b. 3.9°W Y c. 4.3°W N d. 4.6°E 1755: The U. S. Coast Guard facility at mile 361 AHP is represented by which numbered white square on your map?
Y a. 8 N b. 11 N c. 12 N d. 13 1858: On 22 April , your 1852 ZT DR position is LAT 23°54.5'
N, LONG 117°36.8'W. You observe an unidentified star bearing 129°T at an observed altitude (Ho) of 27°10.0'. The chronometer reads 02h 54m 53s and is 02m 51s fast. What star did you observe?
N a. Diphda N b. Betelgeuse Y c. Gienah N d. Arcturus 1872: On 12 June , your 1845 DR position is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 031°T at a sextant altitude (hs) of 70°10.3'. The index error is 0.5' on the arc, and the height of eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
N a. Sheratan N b. Ruchbah N c. Mimosa Y d. Cor Caroli 1881: On 13 September , your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E, when you observed a faint unidentifiable star through a hole in the clouds. The star bore 148.0°T at a sextant altitude (hs) of 32°24.3'. The chronometer read 11h 24m 39s and is 05m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe?
N a. Beta Gruis Y b. Alpha Tucanae N c. Beta Aquarii N d. Alpha Indi 1886: On 8 April , your evening DR position is LAT 22°16'N, LONG 157°58.3'W. You observe an unidentified star bearing 246°T at an observed altitude (Ho) of 58°45.5'. The chronometer reads 05h 09m 57s, and is 01m 23s slow. What star did you observe?
Y a. Betelgeuse N b. Aldebaran N c. Alnilam N d. Bellatrix 1958: Which daymark would you see as you approach Red Store Light (mile 269.5 AHP)?
Y a. Green square N b. Green triangle N c. Green diamond N d. Red square 2291: You are taking a time tick using the 2100 signal from Callao, Peru. You hear a series of 1 second dashes followed by a 9 second silent period, then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 09h 00m 10s. When compared to the chronometer, the comparing watch reads 09h 01m 20s, and the chronometer reads 08h 59m 22s. What is the chronometer error?
Y a. 1m 48s slow N b. 0m 38s slow N c. 1m 10s fast N d. 0m 10s fast 2330: At 0731, what is the approximate depth of water?
N a. 31 feet (9.4 meters) Y b. 41 feet (12.5 meters) N c. 52 feet (15.7 meters) N d. 58 feet (17.6 meters) 2333: You observe the lower limb of the Sun at a sextant altitude (hs) of 37°47.2' on 11 October . The index error is 3.0' off the arc. The height of eye is 63 feet (19.2 meters). What is the observed altitude (Ho)?
N a. 37°25.2' N b. 37°42.5' N c. 37°51.5' Y d. 37°57.5' 2669: You are steering 143°T, and a light is picked up dead ahead at a distance of 18.2 miles at 2006. You change course to pass the light 5.5 miles off abeam to port. If you are making 14.5 knots, what is your ETA at a position 5.5 miles off the light?
N a. 2115 Y b. 2118 N c. 2121 N d. 2124 2719: If the Gage at the Greenville Highway Bridge reads 22.0 feet, and the low water reference plane (LWRP) for Greenville (Bridge). MS is 11.3 feet. What is the water level in relation to the low water reference plane?
N a. 22.1 feet below the LWRP N b. 10.7 feet below the LWRP Y c. 10.7 feet above the LWRP N d. 0.5 feet below the LWRP 3071: If the speed necessary for reaching port at a designated time is 20.7 knots and the pitch of the propeller is 23.8 feet, how many revolutions per minute will the shaft have to turn, assuming a 3% negative slip?
N a. 74 N b. 79 Y c. 86 N d. 98 3091: If the pitch of the propeller is 25.1 feet, and the revolutions per day are 91,591, calculate the day's run allowing 7% positive slip.
Y a. 351.6 miles N b. 378.1 miles N c. 390.0 miles N d. 404.6 miles 3106: You are turning 85 RPM, with a propeller pitch of 19 feet, and an estimated slip of +3%. What is the speed of advance?
N a. 14.7 knots Y b. 15.5 knots N c. 16.4 knots N d. 17.1 knots 3260: You have steamed 726 miles at 17.5 knots, and consumed 138 tons of fuel. If you have 252 tons of usable fuel remaining, how far can you steam at 13.5 knots?
N a. 789 miles N b. 1326 miles N c. 1719 miles Y d. 2228 miles 3465: You are underway on course 000°T at 9.5 knots. The current is 082°T at 1.1 knots. What is the course being made good?
Y a. 007°T N b. 009°T N c. 021°T N d. 353°T 11101: Great Salt Pond on Block Island is __________.
Y a. entered through a dredged cut N b. not accessible in easterly gales N c. available for vessels up to a maximum draft of 8 feet (2.4m) N d. not affected by the tide 11104: What is the time of the first PM (Daylight Savings Time) maximum ebb current at Plum Gut on 10 August 1983?
N a. 1231 N b. 1249 N c. 1340 Y d. 1445 11701: What is the true heading to steer inbound in the York River Entrance Channel if your engines are turning for 9.5 knots, the current is 076°T at 1.2 knots, and a southwesterly wind causes 3° of leeway?
N a. 313°T N b. 308°T N c. 303°T Y d. 300°T 13210: At 0943, your position is LAT 41°14.8'N, LONG 71°54.3'W. You are turning for 12.2 knots. What is your ETA at the entrance to Great Salt Pond on Block Island?
Y a. 1054 N b. 1048 N c. 1040 N d. 1032 14501: You are proceeding in an easterly direction on the Columbia River. The pool level of the Bonneville Reservoir stands at 65 feet above MSL. If the highest point on your vessel is 54 feet above the water, what will be the vertical clearance as you pass under the overhead power cables at mile 186.2?
N a. 94 feet N b. 101 feet Y c. 108 feet N d. 117 feet 14604: Contour elevations on this chart refer to heights in feet above mean __________.
N a. lower low water N b. high water N c. low water Y d. sea level 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 __________.
N a. 150°T at 0.6 knot Y b. 150°T at 1.6 knots N c. 330°T at 0.6 knot N d. 330°T at 1.6 knots 15019: At 2215, Cape Henry Light bears 242°pgc, Cape Charles Light bears 010.5°pgc, and Chesapeake Channel Tunnel North Light bears 319°pgc. You are heading 271°pgc. What is the relative bearing of Thimble Shoal Light?
N a. 280° N b. 332° Y c. 014° N d. 017° 15065: At 0925, you plot the following:
Falkner Island Light bearing 252° true @ 1.8 nm
If you correct for a current setting 035°T at 0.5 knot,
what true course will you steer from the 0925 position to arrive at a position 0.5 mile south of Long Sand Shoal West End Horn Buoy "W"?
N a. 089°T N b. 092°T Y c. 095°T N d. 102°T 15256: At 0700, Stratford Shoal Middle Ground Light bears 143°pgc at 1.8 miles. What is your 0700 position?
N a. LAT 41°04.8'N, LONG 73°06.7'W Y b. LAT 41°05.0'N, LONG 73°07.6'W N c. LAT 41°05.1'N, LONG 73°06.8'W N d. LAT 41°05.3'N, LONG 73°07.9'W 15543: At 2236 Falkner Island Light bears 024° true at a range of 8.6 nm
What was the speed made good along the track line since your 2200 fix?
N a. 12.7 knots Y b. 13.5 knots N c. 13.9 knots N d. 14.2 knots 15619: At 2123, your position is LAT 37°20.0'N, LONG 76°03.0'W. What is your distance offshore of Savage Neck?
N a. 4.3 miles N b. 3.4 miles N c. 2.6 miles Y d. 1.7 miles 15815: From your 0130 position, you take the following radar ranges:
Mattituck Inlet Light @ 4.6 nm
Falkner Island Light @ 10.75
What is the latitude and longitude of the fix?
N a. LAT 41°00.8'N, LONG 72°40.8'W N b. LAT 41°01.2'N, LONG 72°40.4'W N c. LAT 41°01.6'N, LONG 72°40.0'W Y d. LAT 41°02.0'N, LONG 72°39.5'W 15863: If the current is 050° at 0.9 knot, and a northerly wind causes 3° of leeway. What is the course to steer per gyro compass to make good 280°T if you are turning for 9 knots?
N a. 284°pgc N b. 279°pgc Y c. 276°pgc N d. 273°pgc 16041: From your 0847 fix, you change course to arrive at the rendezvous position and, correcting for current, you estimate your speed over the ground at 15 knots. What is your ETA at the rendezvous?
N a. 0902 N b. 0905 Y c. 0908 N d. 0911 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 16515: What action should you take to compensate for the above current?
N a. Continue on the same course and speed. Y b. Alter your course to the left. N c. Slow to 8.5 knots. N d. Alter your course to the right.