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.
245: On chart 12354, the datum from which heights of objects are taken is __________.
N a. lowest low water N b. mean low water Y c. mean high water N d. mean lower low water 320: At 2150, your position is LAT 36°57.2'N, LONG 76°01.3'W. In this position on the chart, you note a light magenta line running in a direction of 030°T. This line indicates the limits of __________.
Y a. a pilotage area N b. a precautionary area N c. the Cape Henry Light red sector N d. chart 12222 394: A vessel at LAT 38°03.0'S, LONG 49°38.0'W, heads for a destination at LAT 41°26.0'S, LONG 38°32.0'W. Determine the true course by Mercator sailing.
Y a. 111.5°T N b. 113.5°T N c. 158.5°T N d. 160.5°T 405: You depart LAT 33°45.0'N, LONG 118°30.0'W, and steam 2216 miles on course 250°T. What is the longitude of your arrival by Mercator sailing?
N a. LONG 156°08.0'W N b. LONG 156°36.0'W N c. LONG 157°21.0'W Y d. LONG 157°31.0'W 407: You depart LAT 34°22'S, LONG 18°23'E, and steam 3174 miles on course 282°T. What is the longitude of your arrival by Mercator sailing?
Y a. LONG 40°33.5'W N b. LONG 40°19.5'W N c. LONG 40°18.2'W N d. LONG 40°17.3'W 410: A vessel steams 666 miles on course 135°T from LAT 40°24.0'N, LONG 74°30.0'W. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 32°30.0'N, LONG 64°41.0'W Y b. LAT 32°33.0'N, LONG 64°46.0'W N c. LAT 32°36.0'N, LONG 64°49.0'W N d. LAT 32°39.0'N, LONG 64°53.0'W 447: You are encountering heavy weather. What action should you take based on your 1430 fix?
N a. Continue on the same course but increase speed. N b. Continue on the same course at the same speed. N c. Slow to 8.3 knots to compensate for the current. Y d. Alter course to the right, to pass well clear of Southwest Ledge 488: At 0705, with your gyro again functioning properly, you change course to 096°T. At this time Race Rock Light is bearing 000°T at 0.35 mile. You are now governed by which Navigation Rules?
Y a. International Rules N b. Local Pilot Rules N c. Inland Rules N d. Coastal Fishery Rules 529: You depart LAT 51°48.0'S, LONG 178°35.0'W and steam 179 miles on course 270°. What is the longitude of arrival?
N a. 173°47'W N b. 174°27'E Y c. 176°36'E N d. 179°52'W 621: You are on a voyage from New York, NY, to San Francisco, CA. The distance from pilot to pilot is 5132 miles. The speed of advance is 13.5 knots. You estimate 32 hours for bunkering at Colon, and 14 hours for the Panama Canal transit. If you take departure at 0600 hours (ZD +4), 16 May, what is your ETA (ZD +7) at San Francisco?
N a. 0609, 1 June Y b. 2109, 2 June N c. 0009, 3 June N d. 0409, 3 June 683: Which type of daymark would you see on the Belle Island Corner Lt. at mile 458.6 AHP?
N a. Green - Diamond N b. Green - Square N c. Red - Triangle Y d. Red - Diamond 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 1099: On 6 April , your 0300 DR position is LAT 27°42'S, LONG 128°58'W. You are on course 097°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0029
N a. LAT 27°15.5'S, LONG 128°12.4'W Y b. LAT 27°44.7'S, LONG 127°47.5'W N c. LAT 27°52.4'S, LONG 127°49.4'W N d. LAT 28°15.2'S, LONG 128°11.6'W 1195: On 23 June , your 0900 zone time DR position is LAT 21°26.0'N, LONG 137°46.0'W. Your vessel is on course 059°T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?
N a. 1159 N b. 1205 Y c. 1210 N d. 1214 1209: It is 22 October and you are keeping zone time +4. You are on course 083°T, speed 24 knots. Your 0820 DR position is LAT 26°10.0'N, LONG 52°20.0'W. What is the time of the second estimate of LAN by ship's clocks?
N a. 10h 04m 36s N b. 10h 04m 53s N c. 11h 04m 37s Y d. 11h 08m 54s 1289: The horizontal clearance of the center span on the Baton Rouge RR and Highway 190 Bridge is __________.
N a. 443 N b. 500 N c. 575 Y d. 623 1290: You are at mile 230.0 AHP and see on the map a large rectangle outlined with a broken line . This indicates a __________.
N a. revetment N b. dredge material Y c. fleeting area N d. dike 1460: On 27 June , your 1905 ZT DR position is LAT 24°35.0'N, LONG 50°15.0'W. At that time, you observe Saturn bearing 211°pgc. The chronometer reads 10h 04m 26s and the chronometer error is 01m 20s slow. The variation is 4.5°E. What is the gyro error?
Y a. 1.1°W N b. 3.4°E N c. 3.4°W N d. 5.6°W 1464: On 17 May , your 1554 zone time DR position is LAT 26°33.0'N, LONG 65°46.0'W. At that time, you observe the Sun bearing 269°psc. The chronometer reads 07h 55m 47s, and the chronometer error is 01m 14s fast. The variation is 3°W. What is the deviation of the standard magnetic compass?
N a. 0.6°E N b. 1.6°W N c. 4.6°W Y d. 7.6°E 1733: What are the dimensions of the channel maintained at Baton Rouge, LA?
N a. 30 feet x 300 feet N b. 40 feet x 300 feet Y c. 45 feet x 500 feet N d. 30 feet x 500 feet 1759: The Greenville Gage reads 1.6 feet. The high point of your towboat is 54 feet above water. What is the vertical clearance as you pass under the Greenville Highway Bridge?
Y a. 74.5 feet N b. 64.2 feet N c. 55.5 feet N d. 44.4 feet 1781: At 1524 ZT, on 14 June , in DR position LAT 30°51'N, LONG 30° 02'W, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 103.9°pgc. The variation is 10°W. What is the gyro error?
N a. 1.8°W N b. 2.4°E N c. 2.2°E Y d. 2.0°E 1808: You are on map #4. What is the mile point of the facility known as Gulf Coast Grain Co.?
N a. mile 920 AHP N b. mile 921 AHP N c. mile 922 AHP Y d. mile 923 AHP 2106: At 0005, on 26 January, your position is LAT 41°11.8'N,
LONG 72°20.5'W. From this position, you plot a course to steer to a point one half mile north of Mattituck Breakwater Light "MI" with an engine speed of 9.0 knots. If there are no set and drift, what course should you steer?
N a. 207°psc N b. 213°psc N c. 220°psc Y d. 235°psc 2206: What is the distance in river miles, from the new mouth of the White River to the RR and Hwy bridge at Baton Rouge, LA?
N a. 338 miles Y b. 365 miles N c. 400 miles N d. 454 miles 2582: From your 1750 GPS position at LAT 41°15.6'N, LONG 072°11.5'W, you plot a course of 255°T at 8.5 kts. At what time would you see Falkner Island Light, if visibility is 10 miles?
N a. 1819 Y b. 1850 N c. 1910 N d. 1917 2651: You are steering 246°T, and a light is picked up dead ahead at a distance of 14 miles at 1037. You change course to pass the light 2.5 miles off abeam to port. If you are making 12 knots, what is your ETA at the position 2.5 miles off the light?
N a. 1143 Y b. 1146 N c. 1149 N d. 1152 2707: You are underway on course 128°T at a speed of 17.6 knots. You sight a daymark bearing 126°T at a radar range of 4.3 miles at 1649. If you change course at 1654, what is the course to steer to leave the daymark abeam to starboard at 0.5 mile?
Y a. 113°T N b. 116°T N c. 119°T N d. 136°T 3102: You are turning 88 RPM, with a propeller pitch of 19 feet, and an estimated slip of 0%. What is the speed of advance?
Y a. 16.5 knots N b. 16.9 knots N c. 17.3 knots N d. 18.1 knots 3263: You have steamed 1124 miles at 21 knots, and consumed 326 tons of fuel. If you have 210 tons of usable fuel remaining, how far can you steam at 17 knots?
N a. 1096 miles Y b. 1105 miles N c. 1218 miles N d. 1304 miles 11501: At 2016 your GPS position is LAT 41°07.6'N, LONG 71°33.8'W. At 2128 your position is LAT 41°00.4'N, LONG 71°29.4'W. What was the speed made good between the two positions?
N a. 11.9 knots N b. 10.2 knots N c. 8.9 knots Y d. 6.7 knots 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 11909: Your position is 3 miles due east of Montauk Point Light. What is the true course to steer to arrive one mile due south of Block Island Southeast Point Light, if you are turning for 6.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
N a. 081°T Y b. 084°T N c. 087°T N d. 090°T 13000: Your 2108 position is LAT 41°10.0'N, LONG 72°30.0'W. You are turning for 12.5 knots. What is your ETA at Buoy NH (LAT 41°12.1'N, LONG 72°53.8'W)?
N a. 2133 N b. 2227 Y c. 2235 N d. 2248 13303: You are considering anchoring approximately three miles northeast of Chesapeake Light. After examining the chart you decide not to because of the __________.
N a. large number of wrecks N b. coral being designated as a special protected area Y c. danger of unexploded mines N d. area being designated as a National Marine Sanctuary 14704: At 0800 your vessel is at mile 110 on the Columbia River. Thirty minutes later your vessel is at mile 115. What is your speed in knots?
N a. 4.3 knots N b. 5.7 knots N c. 7.8 knots Y d. 8.7 knots 15023: At 1042, on 16 March, you are passing the Vicksburg Gage (mile 437.0 AHP). What has been the average current since 0630, 15 March, if you have been making turns for 8.0 mph?
N a. 0.2 mph N b. 0.5 mph Y c. 0.8 mph N d. 1.2 mph 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 15265: Orient Point Light is __________.
N a. lighted only during daytime when the sound signal is in operation N b. maintained only from May 1 to Oct 1 N c. 64 feet (19.4 meters) above mean low water Y d. lighted throughout 24 hours 15642: At 2030 you take the following radar ranges:
Race Rock Light 2.1 miles
Latimer Reef Light 6.4 miles
If you estimate an average current of 080°T at 1.5 knots,
which course will you steer per gyrocompass to leave Endeavor Shoals Gong Buoy bearing 270°T at 1.5 miles?
N a. 115° N b. 118° N c. 124° Y d. 127° 15658: What course should you steer by the standard magnetic compass in order to maintain a heading of 081°pgc?
N a. 062°psc N b. 080°psc N c. 090°psc Y d. 095°psc 15810: You alter course from your 0045 position to head for a point 0.5 mile north of Mattituck Breakwater Light "MI". If the visibility is 10 miles and you make good 9 knots, at approximately what time will you lose sight of Saybrook Breakwater Light?
N a. You have already lost sight at 0045 Y b. 0055 N c. 0120 N d. The light is visible all the way to Mattituck Inlet 15817: The south coast of Long Island Sound between Mattituck Inlet and Port Jefferson is __________.
N a. composed of high rocky bluffs N b. a high, flat plateau with sheer cliffs Y c. fringed by rocky shoals N d. low and marshy with isolated beaches 16043: As you cross the New Haven Outer Channel range, you observe the range in line bearing 335.5° per gyrocompass. The helmsman reports that he was heading 100° per gyrocompass,
and that the standard magnetic compass read 109° at the time of the observation. What are the gyro error and
deviation of the standard magnetic compass on this heading?
N a. Gyro error 2°E, deviation 3°E N b. Gyro error 0° , deviation 2°W N c. Gyro error 2°W, deviation 9°W Y d. Gyro error 2°W, deviation 3°E 16113: 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 Y c. The South Auxiliary Channel N d. Thimble Shoal Main Channel 16215: The wind is southerly, and you estimate 3° leeway. Allowing for leeway, what is the course to steer from your 0745 position to pass 1 mile south of Watch Hill Buoy "WH"?
N a. 079°pgc N b. 081°pgc N c. 085°pgc Y d. 087°pgc 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 16615: At 0112, the radar range to Branford Reef Light is 2.9 miles. At 0125, the range is 3.6 miles. What is the position of your 0125 running fix if you are steering 124°T at 12 knots?
Y a. LAT 41°09.7'N, LONG 72°48.1'W N b. LAT 41°09.7'N, LONG 72°48.7'W N c. LAT 41°09.8'N, LONG 72°47.2'W N d. LAT 41°10.2'N, LONG 72°47.7'W 16708: At 0520 you are on course 243°pgc at 12 knots. What is the course per standard magnetic compass?
Y a. 263°psc N b. 258°psc N c. 233°psc N d. 227°psc 16746: In order to check your compasses, you sight Race Rock Light in line with New London Harbor Light bearing 336° per gyrocompass. The helmsman reports the vessel was heading 275.0°pgc and 290.5° per standard magnetic compass at the time of the observation. Which statement is TRUE?
N a. The gyro error is now 2°E. Y b. The deviation table is correct for that heading. N c. The vessel should be swung to check the deviation table. N d. The compass error is 0.5°W.