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.
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?
Y a. LAT 22°29.0'N, LONG 41°06.5'W N b. LAT 22°30.3'N, LONG 41°00.2'W N c. LAT 22°31.1'N, LONG 42°58.6'W N d. LAT 22°33.0'N, LONG 42°55.9'W 216: NOAA VHF-FM weather broadcasts from New London, CT are on __________.
Y a. 162.55 MHz N b. 162.40 MHz N c. 162.30 MHz N d. 162.25 MHz 251: You alter course from your 0045 position to head for Mattituck Breakwater Light "MI". If the visibility is 10 miles and you make good 9 knots, at what time will you lose sight of Saybrook Breakwater Light?
Y a. 0100 N b. 0123 N c. 0131 N d. The light is visible all the way to Mattituck Inlet 272: At 0925, you plot the following bearings:
Falkner Island Light bearing 251°true
Kelsey Point BW Light bearing 075°true
If you correct for a current setting 215°T at 0.5 knot, what 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. 102°T N b. 096°T N c. 093°T Y d. 089°T 315: From your 1430 fix, you order turns for 8 knots. You steer 045°T and experience no set and drift. At what time would you expect to have New Point Comfort Spit Light "4" abeam?
N a. 1510 N b. 1504 Y c. 1458 N d. 1452 343: While on a heading of 082°T, you sight Middle Ground Light in line with Old Field Point Light bearing 206° per standard magnetic compass. From this you can determine the __________.
Y a. deviation table is correct for that heading N b. variation N c. compass error is 17.5°E N d. deviation is 3.5°E for a bearing of 206° per standard magnetic compass 368: You will enter waters governed by the International Rules when __________.
N a. you cross the territorial sea boundary line N b. abeam of buoy "CBJ" Y c. Cape Charles Light bears 022°T N d. you cross the boundary of the contiguous zone 596: At 0921, on 24 July, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 10.0 mph, what was the current since departure?
N a. 1.4 mph Y b. 1.7 mph N c. 2.0 mph N d. 7.0 mph 620: On 21 May , at 0630 PDT (ZD +7), your vessel takes departure at the San Francisco Sea Buoy, LAT 37°45.0'N, LONG 122°41.5'W, enroute to Kobe, LAT 33°52.0'N, LONG 135°00.0'E via great circle. The distance is 4,245 miles, and you estimate that you will average 14.0 knots. What will be your estimated zone time of arrival?
N a. 0442, 2 June N b. 1342, 2 June N c. 0442, 3 June Y d. 1342, 3 June 626: You are on a voyage from St. John, Canada, to Galveston, TX. The distance is 2280 miles, and the speed of advance is 15.0 knots. You estimate 16.5 hours for bunkering enroute at Ft. Lauderdale, FL. If you sailed at 1642 hours (ZD +4), 27 February , what was your ETA (ZD +6) at Galveston?
Y a. 1512, 6 March N b. 0812, 6 March N c. 0712, 6 March N d. 2312, 5 March 635: You complete changing out your tow and get underway enroute Ark City Tank Storage (mile 554.0 AHP) to deliver the tank barges. What is the distance you must travel from Cairo Point Light?
N a. 606.8 miles N b. 554.0 miles Y c. 399.8 miles N d. 202.1 miles 830: On 23 August , in DR position LAT 24°22.0'S, LONG 64°55.3'E, you take an ex-meridian observation of the Moon's upper limb at upper transit. The chronometer time of the sight is 02h 15m 04s, and the chronometer error is 01m 06s fast. The sextant altitude (hs) is 48°03.6'. The index error is 2.0' on the arc, and your height of eye is 60 feet (21.0 meters). What is the latitude at meridian transit?
Y a. 24°20.5'S N b. 24°22.8'S N c. 24°24.8'S N d. 24°49.5'S 1302: From Baton Rouge to Cairo, what is the maintained minimum channel depth during low water?
Y a. 9 feet N b. 12 feet N c. 15 feet N d. 30 feet 1683: You are taking a time tick using the 1930 signal from Rio de Janeiro, Brazil. You hear the preparatory signal "CQ DE PPE" repeated several times followed by a short dash (0.4 sec), 60 dots (0.1 sec each) and another short dash. At the beginning of the last dash, the comparing watch reads 07h 30m 08s. When compared to the chronometer, the comparing watch reads 07h 31m 48s, and the chronometer reads 07h 32m 16s. What is the chronometer error?
N a. 0m 28s slow N b. 1m 40s slow N c. 0m 08s fast Y d. 0m 36s fast 1742: The highest point on your towboat is 32 feet above the
water, and the Helena Gage reads +6.6 feet. What is the vertical clearance when you pass under the A-span of the Helena Highway Bridge?
Y a. 80.8 feet N b. 73.1 feet N c. 68.0 feet N d. 56.1 feet 1742: The highest point on your towboat is 32 feet above the
water, and the Helena Gage reads +6.6 feet. What is the vertical clearance when you pass under the A-span of the Helena Highway Bridge?
Y a. 80.8 feet N b. 73.1 feet N c. 68.0 feet N d. 56.1 feet 1748: As you approach Walnut Point Light (mile 522.5 AHP),
which type of daymark would you see on the light structure?
N a. Red triangle N b. Green diamond N c. Green square Y d. Red diamond 1766: What type of daymark will you see as you approach Black Hills Light (mile 337.7 AHP)?
N a. Private aid - no daymark N b. Red square N c. Red diamond Y d. Red triangle 1782: At 2043 ZT, on 13 October , in DR position LAT 43°57.3'S, LONG 147°16.0'E, you observe an amplitude of Venus. The planet is about one Sun's diameter above the horizon and bears 236.2°pgc. The variation is 15°E. What is the gyro error?
Y a. 0.0° N b. 0.9°E N c. 1.8°E N d. 0.4°W 1833: What are the dimensions of the Port Allen Lock at Baton Rouge, LA?
N a. 75 feet x 1188 feet N b. 84 feet x 1180feet Y c. 84 feet x 1188 feet N d. 75 feet x 1180 feet 2086: Ar your current speed of 22 knots you only have enough fuel remaining to travel 440 miles. You must travel 618 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
N a. 17.8 Y b. 18.6 N c. 19.4 N d. 20.2 2157: On 25 May , your vessel's 1917 zone time position is LAT 24°16.0'N, LONG 017°26.0'W. At that time a sextant observation of the planet Saturn was made. The sextant altitude is 63°05.1', and the chronometer reads 08h 18m 24s. The index error is 4.5' off the arc, and the chronometer error is 01m 05s fast. Your height of eye is determined to be 62.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 143.8° Y b. 147.3° N c. 148.7° N d. 149.9° 2181: 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?
N a. Zn 044.6°, a 1.7' A Y b. Zn 044.6°, a 2.5' T N c. Zn 135.1°, a 1.7' A N d. Zn 135.1°, a 2.5' T 2424: As you approach mile 225 AHP, you notice on the map a brown broken-lined rectangular shaped area along the bank. This indicates __________.
N a. weirs N b. a revetment Y c. a fleeting area N d. utility crossing 2577: On 23 July, you take a time tick using the 0900 GMT Cape Town broadcast. You hear a repeating series of 59 dots followed by a dash. At the beginning of the fifth dash you start your stopwatch. The chronometer reads 08h 39m 16s at the time the stopwatch reads 01m 42s. The chronometer error at 0900 GMT, 22 July, was 22m 24s slow. What is the chronometer rate?
Y a. 00m 02s losing N b. 01m 02s gaining N c. 22m 24s losing N d. 22m 26s slow 2591: Which statement best describes the shoreline at Mount Misery?
N a. Wooded, barren hills with a rocky beach N b. Low, rocky cliffs with heavily wooded hills inland N c. Sand dunes and beaches with a mud and sand bottom Y d. Sand bluffs 60 feet high and banks dug out by sand and gravel companies 2657: You are steering 349°T, and a light is picked up dead ahead at a distance of 17.2 miles at 2122. You change course to pass the light 4.5 miles off abeam to port. If you are making 19.5 knots, what is your ETA at the position 4.5 miles off the light?
N a. 2207 N b. 2210 Y c. 2213 N d. 2216 2690: While on a course of 066°pgc, a light bears 13° on the port bow at a distance of 12.3 miles. What course should you steer to pass 4 miles abeam of the light leaving it to port?
N a. 067°pgc Y b. 072°pgc N c. 079°pgc N d. 085°pgc 2871: Your vessel is on a course of 052°T at 16 knots. At 0916 a light bears 078.5°T, and at 0927 the light bears 097°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 0929, 2.0 miles N b. 0932, 2.3 miles N c. 0935, 2.6 miles Y d. 0938, 2.9 miles 2877: Your vessel is steering 263°T at 22 knots. At 0413 a light bears 294°T, and at 0421 the same light bears 312°T. What will be your distance off abeam?
N a. 3.4 miles Y b. 3.7 miles N c. 4.3 miles N d. 4.9 miles 2910: Your vessel is steaming on a course of 140°T at 15 knots. At 1530 a lighthouse bears 200°T. At 1550 it bears 249°T. What is your distance from the lighthouse at 1550?
N a. 1.15 miles N b. 4.60 miles N c. 5.45 miles Y d. 5.75 miles 3063: The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?
N a. +0.7% N b. -0.7% Y c. +7.0% N d. -7.0% 3267: Your vessel arrives in port with sufficient fuel to steam 726 miles at 16 knots. If you are unable to take on bunkers, at what speed must you proceed to reach your next port, 873 miles distant?
Y a. 14.6 knots N b. 15.1 knots N c. 16.3 knots N d. 16.8 knots 10609: At 1922 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 2019 your GPS position is 1 mile due south of Twenty-Eight Foot Shoal Lighted Buoy "TE". What were your set and drift?
Y a. 343°T at 0.7 knot N b. 340°T at 1.2 knots N c. 164°T at 0.9 knot N d. 161°T at 1.1 knots 11703: What is the true heading to steer inbound in York River Entrance Channel if your engines are turning for 9.8 knots, the current is 220°T at 1.2 knots, and a northeasterly wind causes 3° of leeway?
Y a. 319°T N b. 315°T N c. 301°T N d. 298°T 11803: What is the true course to steer between Falkner Island Light and Horton Point Light, if the set and drift of the current are 041° at 2.4 knots, and a northeasterly wind will cause 4° of leeway? Your engines are making turns for 15 knots.
N a. 116°T N b. 124°T Y c. 134°T N d. 142°T 11803: What is the true course to steer between Falkner Island Light and Horton Point Light, if the set and drift of the current are 041° at 2.4 knots, and a northeasterly wind will cause 4° of leeway? Your engines are making turns for 15 knots.
N a. 116°T N b. 124°T Y c. 134°T N d. 142°T 13307: The soundings on the chart are based on the depth of water available at __________.
N a. mean low water Y b. mean lower low water N c. mean high water N d. mean high water springs 14202: What is the minimum clearance for the bridge across the entrance to the Wind River at Home Valley, WA.?
N a. 14 feet Y b. 26 feet N c. 34 feet N d. 38 feet 15146: At 0016 your position is 41°10.3'N, 71°53.0'W. You are steering a course of 296° true with no set and drift. At 0049 Race Rock Light is on your starboard beam. What was your speed made good from your 0016 position?
N a. 13.8 knots N b. 14.4 knots N c. 15.0 knots Y d. 15.6 knots 15611: From your 1815 position, you want to make good a course of 263°T. Your engines are turning RPM's for 12 knots. The current is 050°T at 1.9 knots. Adjusting your course for set and drift, at what time should you expect to enter the red sector of Cape Henry Light?
N a. 1849 N b. 1854 N c. 1859 Y d. 1904 15869: After you raise Stratford Shoal Middle Ground Light, how will the bearings change if you pass to the north of the light?
Y a. The bearings will change to the left. N b. The bearings will remain steady. N c. The bearings will change to the right. N d. Magnetic compass bearings will change to the left and gyro compass bearings will change to the right. 15945: At 2107 Southeast Point Light bears 062°T, and at 2112 this light bears 038°T. What is your distance off Southeast Point Light at 2112? (assume no set and drift)
N a. 2.1 miles Y b. 2.5 miles N c. 2.9 miles N d. 3.3 miles 16020: If visibility permits, Orient Point Light will break the horizon at a range of about __________.
N a. 9.3 miles N b. 10.8 miles Y c. 13.9 miles N d. 17.0 miles 16411: You get underway at 1030. The wind is out of the SSE and you estimate 3° leeway. What course should you steer per gyrocompass to make good a desired course of 075°T?
N a. 074°pgc N b. 076°pgc N c. 078°pgc Y d. 080°pgc