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.
71: The Natchez Gage reads 20.6 feet. The high point on your towboat is 47 feet above the water. What is the vertical clearance as you pass under the Natchez Highway Bridge?
N a. 78.6 feet N b. 72.5 feet N c. 64.1 feet Y d. 58.4 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 156: What are the dimensions of the Old River Lock?
N a. 110 ft x 1190 ft N b. 100 ft x 990 ft N c. 75 ft x 1000 ft Y d. 75 ft x 1190 ft 165: Which company does NOT have a marine facility along the river bank in Helena (mile 661 to 665 AHP)?
Y a. Helena Grain, Inc. N b. Helena Bridge Terminal, Inc. N c. Quincy Soybean Co. N d. Texas Eastern Pipeline Co. 257: At 0705, you change course to head for The Race. You wish to leave Race Rock Light bearing due north at 0.4 mile. If the current is 110°T, at 2.8 knots, and you are turning for 12.0 knots, what course (pgc) should you steer?
N a. 252°pgc N b. 257°pgc N c. 265°pgc Y d. 271°pgc 278: The National Weather Service provides 24 hour weather broadcasts to vessels transiting the Chesapeake Bay Bridge Tunnel area on which frequency?
Y a. 162.55 MHz N b. 162.85 MHz N c. 181.15 MHz N d. 202.35 MHz 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 366: At 0731, approximately how much water is under your keel?
N a. 26 feet (7.9 meters) Y b. 31 feet (9.4 meters) N c. 48 feet (14.5 meters) N d. 54 feet (16.4 meters) 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 415: A vessel at LAT 33°45'N, LONG 118°30'W, heads for a destination at LAT 21°15'N, LONG 157°36'W. Determine the true course and distance by Mercator sailing.
N a. 109.8°T, 2196 miles N b. 236.3°T, 2259 miles Y c. 250.2°T, 2216 miles N d. 289.2°T, 2413 miles 489: At 0728, Race Rock Light is bearing 282°T at 3.8 miles, and the closest point on Fishers Island is at a radar range of 2.1 miles. What speed have you been making since you changed course at 0705?
N a. 11.4 knots N b. 10.6 knots Y c. 9.9 knots N d. 9.2 knots 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 689: You are turning for 10 mph and passing Hog Point, LA. (mile 297.5 AHP). Angola reports that the current at Red River Landing is 4.5 mph. Which statement is TRUE?
N a. The main channel lies on the south side of the island you see ahead. N b. You are making 14.5 mph over the ground. Y c. An underwater stone dike has been constructed 0.5 miles upstream of Miles Bar Towhead. N d. You would expect to find the more favorable current near the broken red line in the river. 978: On 11 November , your 0730 zone time position was LAT 19°58.0'N, LONG 143°54.0'W. Your vessel was steaming on course 084°T at a speed of 15.0 knots. An observation of the Sun's lower limb was made at 0931 ZT. The chronometer read 07h 29m 22s and was slow 02m 22s. The observed altitude (Ho) was 44°17.6'. LAN occurred at 1125 zone time (ZD +10). The observed altitude (Ho) was 52°17.4'. What was the longitude of your 1200 zone time running fix?
N a. 142°34.7'W N b. 142°37.1'W Y c. 142°40.2'W N d. 142°44.2'W 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 1140: At 0921, on 24 May, 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. 3.4 mph N b. 2.0 mph Y c. 1.7 mph N d. 1.4 mph 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 1287: As you approach Buckridge Light (mile 412.5 AHP),
which type of daymark would you see on the light structure?
N a. Red diamond N b. Red triangle Y c. Green square N d. Green diamond 1296: At which of the following times would you be able to listen to lower Mississippi River conditions on VHF Channel 22?
N a. 0900 hours N b. 1100 hours N c. 1200 hours Y d. 1300 hours 1622: Which of the following statements concerning the buoys on the Mississippi River is TRUE?
N a. The position of river buoys can be determined by consulting the latest Light List - Vol. V. N b. A preferred channel mark is a lateral mark indicating a channel junction which must always be passed to starboard. N c. Buoys should be passed as close as possible. Y d. Setting a buoy is the act of placing a buoy on assigned position in the water. 1835: The Vaucluse Trench fill revetment on the LMR extends from mile __________.
N a. 524.3 - 522.6 RDB Y b. 535.6 - 532.9 RDB N c. 535.9 - 534.3 LDB N d. 534.3 - 532.6 LDB 2240: At 1542 ZT, on 23 October , in DR position LAT 37° 28.5'N, LONG 156° 17.3'E, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 282.5°psc. The variation is 0.0°. What is the deviation?
Y a. 2.2°E N b. 2.2°W N c. 1.2°E N d. 1.2°W 2329: You sighted Trestle "B" in line at 0706 and are steering 108°T. At 0731, Cape Henry Light bears 136°T; Cape Charles Light bears 032.5°T; and Thimble Shoal Tunnel South Light bears 282°T. What was the speed made good between 0706 and 0731?
Y a. 8.3 knots N b. 8.8 knots N c. 9.2 knots N d. 9.4 knots 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 3070: If the speed necessary for reaching port at a designated time is 19.6 knots and the pitch of the propeller is 24.6 feet, how many revolutions per minute will the shaft have to turn, assuming a 5% positive slip?
N a. 76 Y b. 85 N c. 97 N d. 106 3085: You must average 16.25 knots to reach port at a designated time. Your propeller has a pitch of 21'08", and you estimate 4% negative slip. How many RPM's must you average to arrive on time?
Y a. 73 RPM N b. 77 RPM N c. 82 RPM N d. 88 RPM 3279: While steaming at 15.0 knots, your vessel consumes 326 barrels of fuel oil per day. In order to reduce consumption to 178 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 8.1 knots N b. 8.5 knots N c. 11.1 knots Y d. 12.2 knots 3619: Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the northeast, producing a 4° leeway. What true course are you making good?
N a. 128°T N b. 136°T N c. 162°T Y d. 170°T 3762: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 196°T, and the variation is 7°E. If the heading of your vessel at the time of the sighting is 192° per standard magnetic compass, what is the deviation?
N a. 3°E Y b. 3°W N c. 4°E N d. 4°W 10203: Your present position is LAT 41°05.5'N, LONG 72°38.0'W. Assuming there is no set and drift, what course must you steer per standard magnetic compass (psc) to arrive at a position 3 miles due north of Horton Point Light?
N a. 077°psc N b. 081°psc Y c. 085°psc N d. 088°psc 11802: What course should you steer by your standard magnetic compass (psc), between New Haven Light and Stratford Pt. Light, if the set and drift of the current are 345°T at 3.0 knots, and a northerly wind will cause 1° of leeway? Your engines are making turns for 18.0 knots.
N a. 245.0°psc Y b. 247.0°psc N c. 264.0°psc N d. 266.5°psc 12102: You sight Thimble Shoal Light in line with Old Point Comfort Light bearing 265° per standard magnetic compass. You are on course 135°psc. Based on this, you know __________.
N a. there is no compass error N b. there is a local magnetic disturbance N c. you should swing your vessel and check the deviation table Y d. the deviation is 0° 13002: At 0829 your position is LAT 41°02.9'N, LONG 72°57.4'W. You are making turns for 8.5 knots. What is your ETA at a position midway between buoys "1" and "2" at the entrance of New Haven Outer Channel?
N a. 0925 N b. 0931 N c. 0938 Y d. 0944 13301: The approach channel to the town of Cape Charles (LAT 37°16'N, LONG 76°01'W) has what controlling depth?
N a. 9 feet Y b. 17 feet N c. 20 feet N d. 40 feet 13404: Your vessel has become disabled and is dead in the water. Your GPS position is LAT 41°12.1'N, LONG 72°43.5'W. You decide to anchor at this position. Under normal conditions, how much anchor chain should you expect to put out?
N a. 80 to 190 feet N b. 190 to 240 feet Y c. 245 to 343 feet N d. 345 to 420 feet 13502: The four soundings in the vicinity of LAT 41°12.2'N, LONG 71°33.0'W, that are underlined with a bracket indicate __________.
N a. that no bottom was found at the sounding depth indicated N b. a submerged rock not dangerous to surface navigation N c. the height a rock uncovers at low water springs Y d. a submerged danger that is cleared to the indicated depth by a wire drag 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 15164: From your 1920 position, you change course to enter Chesapeake Channel between buoys 9 and 10. What is the course per gyrocompass?
N a. 271°pgc N b. 274°pgc Y c. 277°pgc N d. 280°pgc 15344: From your 1850 position of 41°12.8'N, 71°44.1'W, you change course to 060°T. If you make the course good,
what will be your predicted distance off Point Judith Light when the Light bears 015°T?
N a. 1.2 miles N b. 1.9 miles Y c. 2.7 miles N d. 3.4 miles 15462: Visibility has decreased to 1 mile in haze. At 0948, you take the following radar ranges. What course should you steer per gyrocompass from this fix to enter the channel between buoys "19" and "20"?
Thimble Shoal Light - 5.9 miles
South end of trestle C of the Chesapeake Bay Bridge
and Tunnel - 3.8 miles
South end of trestle B of the Chesapeake Bay Bridge
and Tunnel - 5.4 miles
N a. 001°pgc N b. 004°pgc N c. 007°pgc Y d. 010°pgc 15725: At 1723 you increase speed to make good 9.2 mph. At 1937 you have a daymark on your port beam. What daymark is this?
N a. Tiptonville Ferry Landing Daymark N b. Tiptonville Light Y c. Merriwether Bend Light and Daymark N d. Alaska Light and Daymark 15967: At 1925, you take a fix using the following radar ranges:
York Spit Light - 3.4 miles away;
New Point Comfort Spit Light "2" - 2.1 miles away;
York Spit Swash Channel Light "3" - 2.7 miles away. Your longitude is __________.
Y a. 76°16.6'W N b. 76°16.8'W N c. 76°17.0'W N d. 76°17.2'W 16117: What is the distance from your 0731 fix to Wilmington, N.C.
(LAT 34°14.0'N, LONG 77°57.0'W)?
Y a. 339 miles N b. 363 miles N c. 402 miles N d. 486 miles 16217: Which statement describes the shore between Watch Hill Point and Point Judith?
N a. Low, rocky cliffs with heavily wooded hills inland Y b. Sandy beaches broken by rocky points N c. Sand dunes and beaches with a mud and sand bottom N d. Wooded, barren hills with isolated prominent buildings 16238: At 2045, buoy "GM" is at a range of 6.45 miles. Hogsland buoy "12" is at a range of 5.25 miles.
Your vessel's position is __________.
N a. LAT 37°22.8'N, LONG 75°30.8'W Y b. LAT 37°22.3'N, LONG 75°31.7'W N c. LAT 37°22.0'N, LONG 75°29.3'W N d. LAT 37°21.8'N, LONG 75°30.7'W 16239: From your 2045 position, you set a course to pass 1.5 miles due east of the charted position of Hog Island Lighted Bell Buoy "12". The known set and drift in the area are 068°T at 3 knots. What is the course to steer, with no change in engine speed, to make good your desired course?
Y a. 200°T N b. 203°T N c. 206°T N d. 209°T 16416: At 1345, you depart from a position 1 mile due east of Montauk Point Light and set course for Block Island Southeast Light at 9 knots. At 1430 your position is Latitude 41° 06.3' North Longitude 071° 41.9' West
What was the current encountered since 1345?
N a. Set 015°, drift 0.5 knot Y b. Set 195°, drift 0.5 knot N c. Set 015°, drift 0.7 knot N d. Set 195°, drift 0.7 knot 16444: At 1042 you take the following round of bearings:
Cape Henry Light 259°T
Chesapeake Light 101°T
Cape Charles Light 006°T
From this position, you set course 070°T at a speed of 9.5 knots.
What is the course per standard magnetic compass?
N a. 069.5°psc N b. 060.5°psc Y c. 079.5°psc N d. 080.5°psc 16462: Which statement about your 0400 position is TRUE?
Y a. You are within the territorial sea and contiguous zone. N b. You are governed by the Inland Rules of the Road. N c. The ocean floor is composed of shale. N d. Anchoring, trawling and fishing are prohibited. 16465: At 0600, you are entering the inbound leg of the traffic separation scheme at position LAT 36°59.2'N, LONG 75°47.6'
W. Course is 250°T. At 0605, Cape Henry Light bears 249°
T. At 0610, it bears 248°T. At 0625, it bears 247°T. Based on this, you know you are __________.
N a. meeting a current from dead ahead N b. running with a current from dead ahead Y c. being set to the north N d. being set to the south 16507: What is your speed from your 0630 position, with Buoy "PI"
close abeam, to your 0654 position?
N a. 8.2 knots N b. 9.3 knots Y c. 10.5 knots N d. 11.4 knots 16639: You estimate the current to be 125° at 0.6 knot, and the wind is westerly causing 3° of leeway. What course should you steer per gyro compass to make good 347°T while turning for 12.5 knots?
Y a. 340° pgc N b. 343° pgc N c. 346° pgc N d. 349° pgc