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.
92: A stretch where the channel changes from one side of the river to the other is called a __________.
Y a. crossing N b. transit N c. transfer N d. passing 109: The horizontal clearance of the center span on the Baton Rouge RR and Highway Bridge (mile 233.9 AHP) is __________.
N a. 443 N b. 500 Y c. 623 N d. 748 171: At 2015, your vessel is at the Chesapeake Bay Bridge and Tunnel midway between buoys "13" and "14". If the height of tide is -1 foot (-0.3 meters), what is the approximate depth of water?
N a. 35 feet (10.6 meters) N b. 43 feet (13.1 meters) N c. 46 feet (13.9 meters) Y d. 53 feet (15.5 meters) 179: In order to check your compasses, you sight North Dumpling Island Light in line with Latimer Reef Light bearing 077°pgc. The helmsman was steering 307°pgc and 320° per standard magnetic compass at the time. Which statement is TRUE?
N a. The gyro error by observation is 2°E. N b. The deviation based on the observation is 15°W. Y c. The magnetic compass error is 14°W. N d. The true line of the range is 079°. 197: 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?
Y a. 014° N b. 017° N c. 280° N d. 332° 276: At 1200, your position is 2.0 miles southwest of Bartlett Reef Light. Your heading is 075°T. Visibility is less than 0.2 mile in fog and rain. Which of the following signals is most likely to be from another vessel?
N a. Whistle from 125° relative N b. Bell from 350° relative Y c. Whistle from 075° relative N d. Horn from 330° relative 287: If the visibility is 11 miles, what is the luminous range of New Point Comfort Spit Light "4"?
N a. 6.5 mile Y b. 5.0 miles N c. 3.3 miles N d. 2.0 miles 297: What course should you steer per standard magnetic compass in order to navigate down the center of York River Entrance Channel (ignore set and drift)?
N a. 149°psc N b. 145°psc Y c. 141°psc N d. 139°psc 326: Your 0200 position is LAT 37°23.5'N, LONG 76°09.2'W. Your speed is 8 knots, and your course is 095°T. Which statement is TRUE?
N a. The depth of the water in your vicinity is about 38 to 40 fathoms (69.1 meters to 72.7 meters). N b. The closest major aid to navigation is New Point Comfort. Y c. You are less than a mile from a sunken wreck which could interfere with your tow. N d. You will pass through a disposal area on your present course. 381: At 1540, your position is LAT 37°18.4'N, LONG 76°10.5'W. Which course should you steer per gyrocompass to head for the entrance to Cape Charles City?
Y a. 129°pgc N b. 123°pgc N c. 117°pgc N d. 109°pgc 414: A vessel at LAT 49°45'N, LONG 6°35'W, heads for a destination at LAT 25°50'N, LONG 77°00'W. Determine the true course and distance by Mercator sailing.
Y a. 246.5°T, 3597 miles N b. 253.0°T, 3648 miles N c. 268.6°T, 3483 miles N d. 066.4°T, 3602 miles 430: 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 Y b. LAT 41°12.1'N, LONG 72°48.6'W N c. LAT 41°12.3'N, LONG 72°47.7'W N d. LAT 41°12.5'N, LONG 72°44.3'W 543: What was the current between 0520 and 0600?
N a. 201° at 1.0 knot N b. 201° at 1.5 knot Y c. 021° at 1.5 knot N d. 021° at 1.0 knots 575: What is the course per standard magnetic compass on the southern leg of York Spit Channel between buoys "15" and "23"?
N a. 341° Y b. 339° N c. 322° N d. 319° 730: On 18 November , your 1750 zone time DR position is LONG 110°16.0'W. At that time you observe Polaris with a sextant altitude (hs) of 21°29.8'. The chronometer time of the sight is 00h 52m 43s, and the chronometer error is 02m 18s fast. The index error is 3.2' on the arc, and the height of eye is 49.5 feet. What is your latitude by Polaris?
Y a. 21°03.4'N N b. 21°13.4'N N c. 21°28.1'N N d. 21°35.1'N 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 1130: At 1923, on September 21, you pass Bixby Towhead Light (mile 873.7 AHP). What was your average speed since leaving Cairo?
N a. 9.2 mph N b. 8.8 mph Y c. 8.5 mph N d. 7.2 mph 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 1148: 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. 202.1 miles Y b. 400.7 miles N c. 554.2 miles N d. 605.8 miles 1213: It is 23 November and you are keeping zone time +4. You are on course 262°T, speed 21 knots. Your 0800 DR position is LAT 24°30.0'N, LONG 48°40.0'W. What is the time of the second estimate of LAN by ship's clocks?
Y a. 11h 05m 54s N b. 11h 34m 22s N c. 12h 06m 02s N d. 12h 08m 36s 1263: On 18 October , your 1330 ZT DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at a speed of 20 knots. What will be the zone time of sunset at your vessel?
N a. 1715 N b. 1729 Y c. 1742 N d. 1751 1416: Which company does NOT have a marine facility along the river bank in Madison Parish (mile 457.0 AHP)?
N a. Complex Chemical Co. N b. Delta Southern Railroads N c. Mid-Delta Helena, LLC Y d. Baxter Wilson 1688: As you approach Ashland Light (mile 378.1 AHP), which type of daymark would you see on the light structure?
N a. Green square N b. Green triangle N c. Red diamond Y d. Red triangle 1897: On 22 June , your 0424 DR position is LAT 26°18.5'N, LONG 124°18.2'W. You observe an unidentified star bearing 249°T at an observed altitude (Ho) of 52°50.7'. The chronometer reads 00h 23m 24s, and is 01m 32s slow. What star did you observe?
N a. Peacock N b. Schedar N c. Ankaa Y d. Altair 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?
Y a. Saturn, Antares, Rasalhague N b. Jupiter, Saturn, Polaris N c. Saturn, Polaris, Zubenelgenubi N d. Jupiter, Spica, Denebola 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 2109: At 0100, you obtain the following bearings:
Rocky Point Lookout Tower 062°T
Horton Point Lighthouse 189°T
What was the speed made good between 0045 and 0100?
Y a. 7.4 knots N b. 8.0 knots N c. 8.7 knots N d. 9.2 knots 2581: At 1732, Bartlett Reef Lt bears 016°psc. Race Rock Lt bears 125.5°psc with a radar range of 4.4 miles. What is the set and drift?
N a. 116°, 0.4 knot N b. 116°, 1.0 knot N c. 296°, 0.4 knot Y d. 296°, 1.0 knot 2781: Your engine speed is 9.8 mph and you estimate the current at 1.6 mph. What is your speed over the ground?
N a. 11.0 mph N b. 9.8 mph N c. 8.6 mph Y d. 8.2 mph 3054: The propeller on a vessel has a diameter of 22.8 feet and a pitch of 19.3 feet. What would be the apparent slip if the vessel cruised 287 miles in a 24 hour day (observed distance) at an average RPM of 67?
N a. -6.3% Y b. +6.3% N c. -24.0% N d. +24.0% 3250: You are taking a time tick using the 1200 signal from Valparaiso, Chile. 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 12h 00m 18s. When compared to the chronometer, the comparing watch reads 12h 01m 23s, and the chronometer reads 11h 59m 35s. What is the chronometer error?
N a. 0m 18s fast N b. 1m 05s fast N c. 0m 25s slow Y d. 1m 30s slow 3643: 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 northerly wind produces 1° leeway?
N a. 084°T Y b. 086°T N c. 148°T N d. 085°T 11006: At what time will the first maximum flood occur 1 mile east of Old Field Point on 29 April 1983? (You are keeping daylight saving time ZD +4).
N a. 0957 N b. 1059 Y c. 1328 N d. 1423 11506: At 1014 you depart the entrance to Lake Montauk with Light "1" close aboard. Your course is 066° per standard magnetic compass, and the speed is 8.6 knots. At 1238 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good?
Y a. 8.2 knots N b. 8.6 knots N c. 8.9 knots N d. 9.2 knots 12103: You sight Wolf Trap Light in line with New Point Comfort Spit Light "2" bearing 048° per standard magnetic compass. You are on course 203°psc. Based on this, you know __________.
N a. the compass error is 12°W N b. the deviation is 9°W Y c. that the deviation table is in error N d. the deviation is 3°E for bearings of 048° per standard magnetic compass 12904: Your 0916 position is LAT 37°10.9'N, LONG 75°29.6'W. You are turning for 12.3 knots. What is your ETA at North Chesapeake Bay Entrance Buoy NCA?
N a. 1035 N b. 1043 Y c. 1051 N d. 1101 13506: The broken magenta lines starting at Montauk Point and running generally ENE to Block Island indicate __________.
N a. recommended tracks to Block Island Y b. a submerged cable area N c. a military exercise area N d. demarcation lines for application of the COLREGS 14200: What is the length of the city wharf at The Dalles on the Columbia River?
N a. 20 feet Y b. over 1000 feet N c. 800 feet N d. 600 feet 14203: What is the vertical clearance of the fixed bridge across the entrance to Rock Creek at Stevenson, Washington?
Y a. 18 feet N b. 36 feet N c. 54 feet N d. 70 feet 14203: What is the vertical clearance of the fixed bridge across the entrance to Rock Creek at Stevenson, Washington?
Y a. 18 feet N b. 36 feet N c. 54 feet N d. 70 feet 14602: Where would you tune your radio to receive a VHF-FM weather broadcast for the Columbia River in the vicinity of Government Island?
N a. KIH-32 - 162.40 MHz N b. KBA-99 - 162.40 MHz Y c. KEB-97 - 162.55 MHz N d. KEC-62 - 162.55 MHz 14702: At 2200 your vessel is at mile 95 proceeding in an easterly direction on the Columbia River. At 0400 the following morning, you pass the 125 mile mark. How many nautical miles have you traveled since 2200?
N a. 22.6 N b. 24.3 Y c. 26.1 N d. 34.5 15041: At 0741 you are still steering a course of 206° true, with a speed of 18 knots. At this time you observe Cape Charles Lighted Bell Buoy "14" bearing 222° true and Hog Island Lighted Bell Buoy "12" bearing 015° true . What were the set and drift experienced since 0725?
Y a. 259°true at 3.2 knots N b. 049°true at 2.5 knots N c. 240° true at 1.9 knots N d. 042°true at 3.3 knots 15112: Based on a DR, at approximately 1817 you would expect to __________.
N a. enter a traffic separation zone Y b. depart a regulated area N c. cross a submerged pipeline N d. depart a restricted area 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 15409: At 1540, your position is LAT 37°18.4'N, LONG 76°10.5'W. Which course should you steer per gyrocompass to head for the entrance to Cape Charles City?
N a. 109°pgc N b. 117°pgc N c. 123°pgc Y d. 129°pgc 16057: What is the maximum allowable speed of vessels underway up river from Tue Marshes Light?
N a. 8 knots N b. 10 knots Y c. 12 knots N d. 14 knots 16142: At 1949 Little Gull Island Light bears 270°T and is 1.7 miles off. From this position, you change course to 118°T and increase engine speed to 18 knots. If you make good your course and speed, at what time should Shagwong Reef Lighted Bell Buoy "7SR" bear 180°T?
Y a. 2016 N b. 2019 N c. 2022 N d. 2025 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?
N a. 187° Y b. 191° N c. 194° N d. 197° 16361: At 0400, you take the following bearings:
Sand Shoal Inlet South Light bearing 305°pgc
Cape Charles Light bearing 241°pgc
What was the course made good since 0240?
N a. 182°T Y b. 185°T N c. 189°T N d. 192°T 16508: 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?
N a. 062°psc N b. 080°psc N c. 090°psc Y d. 095°psc 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