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.
15: The Vicksburg Gage reads 31.9 feet. The high point on your towboat is 43 feet above the water. What is the vertical clearance as you pass under the Vicksburg Highway 80 Bridge?
N a. 36.2 feet Y b. 41.4 feet N c. 58.0 feet N d. 84.3 feet 117: At 0645, on the 17th of April, you pass Hole in the Wall Lt. (mile 373.4 AHP). What has been your average speed since departing the Exxon Refinery?
N a. 5.8 mph Y b. 6.3 mph N c. 6.7 mph N d. 7.1 mph 122: From Baton Rouge to Cairo, what is the maintained minimum channel depth during low water?
N a. 6 feet Y b. 9 feet N c. 12 feet N d. 30 feet 185: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.
Y a. 150°T at 1.6 knot N b. 150°T at 0.6 knots N c. 330°T at 0.6 knot N d. 330°T at 1.6 knots 207: If your height of eye is 35 feet (10.7 meters), what is the approximate geographic range of Block Island North Light?
N a. 7.4 nm N b. 13.0 nm Y c. 15.8 nm N d. 17.5 nm 220: From your 1715 fix, you steer 214°T at 12 knots. At 1800,
you take the following bearings:
Chesapeake Light bearing 175°pgc
Cape Henry Light bearing 239°pgc
Cape Charles Light bearing 293°pgc
Your 1800 position is __________.
N a. LAT 37°02.7'N, LONG 75°42.7'W Y b. LAT 37°02.9'N, LONG 75°43.1'W N c. LAT 37°03.0'N, LONG 75°43.3'W N d. LAT 37°03.1'N, LONG 75°42.8'W 242: At 1210, you are in position LAT 41°14.3'N, LONG 72°16.5'W. What is the depth of water below your keel?
N a. 92 feet (28.0 meters) Y b. 97 feet (29.4 meters) N c. 108 feet (32.7 meters) N d. 115 feet (35.0 meters) 283: At 1810, you sight a buoy on your starboard side labeled "19". This buoy marks __________.
Y a. the side of York Spit Channel N b. the visibility limit of the red sector of Cape Henry Light N c. the end of York Spit Channel N d. the junction of the York Spit and York River Entrance Channels 284: Based on a DR, at approximately 1817 you would expect to __________.
N a. enter a traffic separation zone N b. cross a submerged pipeline Y c. depart a regulated area N d. depart a restricted area 313: At 1400, your position is LAT 37°14.7'N, LONG 76°22.3'W. From this position, you head for the York River Entrance Channel Buoy "17". What should you steer per standard magnetic compass for this heading?
Y a. 125°psc N b. 122°psc N c. 119°psc N d. 108°psc 342: If the visibility is 11 miles, what is the earliest time you can expect to see New Haven Light?
N a. The light is visible at 0352. Y b. 0443 N c. 0414 N d. You will not sight the light. 431: At 0900, the current is flooding in a direction of 350°T at 1.2 knots. If your engines are turning RPMs for 9 knots, which course should you steer per standard magnetic compass to make good a course of 297° true?
N a. 319°psc N b. 317°psc N c. 311°psc Y d. 302°psc 457: Determine the great circle distance and initial course from LAT 31°57.0'S, LONG 115°52.0'E to LAT 24°47.0'N, LONG 66°59.0'E.
N a. 4516 miles, 134.5°T Y b. 4407 miles, 314.5°T N c. 4402 miles, 319.5°T N d. 4378 miles, 336.8°T 531: You depart LAT 15°48'N, LONG 174°06'E and steam 905 miles on course 090°. What is the LONG of arrival?
N a. 165°41'W Y b. 170°13'W N c. 172°47'W N d. 179°06'E 740: On 14 March , your 1846 ZT DR position is LAT 21°57.6'N, LONG 132°16.2'W. At that time you observe Polaris with a sextant altitude (hs) of 22°16.8'. The chronometer time of the sight is 03h 45m 10s, and the chronometer error is 01m 32s slow. The index error is 3.2' off the arc, and the height of eye is 44.9 feet. What is your latitude by Polaris?
N a. 21°32.4'N Y b. 21°49.8'N N c. 21°51.0'N N d. 21°53.1'N 1133: The Helena Gage reads 9.4 feet. The high point on your towboat is 42 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 53.0 feet N b. 62.6 feet N c. 64.2 feet Y d. 68.0 feet 1139: You are passing the Bayou Sara Gage which reads 3.9 feet. The low water reference plane for Bayo Sara is 5.25 feet. Which of the following statements is TRUE?
N a. The river level is above the Low Water Reference Plane. N b. Red Store Landing Revetment is ahead on your starboard side N c. This gage reading is at a lower elevation than the same reading on the Gage at Head of Passes. Y d. None of the above. 1142: At 1132, 24 May, you pass Natchez Beam Lt. (mile 364.8 AHP). What is your ETA off the Memphis Gage if you average 8.0 mph?
N a. 2345, 25 May Y b. 0947, 26 May N c. 1525, 26 May N d. 2215, 26 May 1201: On 10 October , your 0930 zone time position is LAT 25°00.0'S, LONG 164°38.6'W. Your vessel is on course 180°T at a speed to 10.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1145 N b. 1151 N c. 1203 N d. 1206 1220: Anchorage regulations for this area may be obtained from __________.
N a. Chesapeake Bay Port Authority, Hampton VA N b. Virginia - Maryland Pilots Association Y c. Office of the Commander 5th Coast Guard District N d. Commanding General, Corps of Engineers, Washington, D.C. 1913: On 14 January , your 0550 DR position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star bearing 212°T at an observed altitude (Ho) of 41°42.3'. The chronometer reads 08h 48m 51s, and is 01m 22s slow. What star did you observe?
Y a. Gienah N b. Kochab N c. Gacrux N d. Eltanin 2115: 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 2161: On 28 April , your vessel's 0515 zone time position is LAT 23°26'S, LONG 95°30'E. At this time, the observed altitude (Ho) of the star Rigil Kentaurus is 24°51.4'. Your chronometer reads 11h 16m 36s and is 01m 18s fast. What is the intercept (a) based on the assumed position method?
N a. 30.9 miles N b. 32.3 miles N c. 33.1 miles Y d. 34.4 miles 2370: As you pass under the Vicksburg Bridges, you estimate the current as 3.0 mph. What is the speed over the ground, if your vessel is making turns for 10.5 mph?
N a. 16.5 mph Y b. 13.5 mph N c. 10.5 mph N d. 7.5 mph 2455: You are underway and intend to make good a course of 170°T. You experience a current with a set and drift of 050°T at 2.8 knots, and a easterly wind produces a leeway of 3°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 18.5 knots. What will be your speed made good over your intended course of 170°T?
N a. 18.5 knots N b. 18.1 knots N c. 17.6 knots Y d. 17.2 knots 2674: You are steaming on course 126°T at 14.8 knots. At 1022 you sight a buoy bearing 128°T, at a range of 4.8 miles. If you change course at 1026, what true course will you steer to leave the buoy 0.5 mile abeam to port?
Y a. 136° N b. 133° N c. 122° N d. 119° 2709: If the highest point of your towboat is 54 feet above the water and the Natchez Gage reads 24.8 feet, what will be your vertical clearance when passing under the Natchez-Vidalia westbound Highway Bridge?
N a. 35.9 feet Y b. 47.2 feet N c. 49.6 feet N d. 57.5 feet 2716: The charts show two dashed lines crossing the river just south of St. Catherine Bar Light. What does this indicate?
N a. Overhead power lines N b. Louisiana-Mississippi ferry crossings N c. Two railroad trestles Y d. Two submerged oil pipelines 2776: The charts show a circle with two black quadrants located at mile 846.0 AHP. What does this indicate?
N a. Hazardous chemical dock Y b. River Gage N c. Betz-Tipton Veneers Terminal N d. Bulletin Board 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 3627: Your vessel is steering course 243°psc. Variation for the area is 5°E, and deviation is 2°W. The wind is from the south-southeast, producing a 2° leeway. What true course are you making good?
N a. 242°T N b. 244°T N c. 246°T Y d. 248°T 3753: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 343°T, and the variation is 5° west. If the heading of your vessel at the time of the sighting is 344° per standard magnetic compass, what is the correct deviation?
N a. 1°E N b. 1°W Y c. 4°E N d. 4°W 4017: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a gyro heading of 196°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 350° 122.5° - 110° 239.5° - 230°
030.5° - 020° 152.0° - 140° 269.0° - 260°
061.5° - 050° 181.0° - 170° 298.0° - 290°
092.0° - 080° 210.0° - 200° 327.5° - 320°
N a. 2.0°E N b. 2.0°W N c. 1.0°W Y d. 0.0° 10202: Your present position is LAT 41°05.5'N, LONG 72°38.0'W. Assuming that there is no set and drift, what course must you steer per standard magnetic compass (psc) to arrive at a position midway between New Haven Harbor Channel buoys #1 and #2?
N a. 137°psc N b. 309°psc Y c. 315°psc N d. 319°psc 10302: Determine the course per standard magnetic compass from Cerberus Shoal Buoy 9 (LAT 41°10.4'N, LONG 71°57.1'W) to a position 0.2 mile south of Race Rock Light (LAT 41°14.6'N, LONG 72°02.8'W).
Y a. 326.5°psc N b. 324.0°psc N c. 298.5°psc N d. 296.0°psc 10612: You are taking a time tick using the 2000 signal from Kekaha-Kauai, Hawaii (WWVH). 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 08h 00m 08s. When compared to the chronometer, the comparing watch reads 08h 01m 15s, and the chronometer reads 07h 59m 55s. What is the chronometer error?
N a. 0m 08s fast N b. 1m 07s fast Y c. 1m 12s slow N d. 1m 28s slow 11001: What time will high water occur at Saybrook Jetty on the morning of 29 October 1983?
N a. 0145 N b. 0255 Y c. 0405 N d. 0920 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 12108: You sight Tue Marshes Light (LAT 37°14.1'N, LONG 76°23.2'W) in line with Goodwin Thorofare Light "16" (LAT 37°13.7'N, LONG 76°25.0'W) bearing 262° per standard magnetic compass. What is TRUE if your vessel's heading is 119°psc?
N a. The compass error is 10°W. N b. The deviation table must be corrected for the change in date. N c. The deviation is 1°W. Y d. The deviation table is correct for a heading of 119°psc. 12611: You are on course 262° per standard magnetic compass when you take the following bearings: Saybrook Breakwater Light - 338.5°psc Little Gull Island Light - 107.5°psc Horton Point Light - 240.0°psc What is your position?
N a. LAT 41°11.9'N, LONG 72°16.7'N Y b. LAT 41°12.6'N, LONG 72°17.2'W N c. LAT 41°13.0'N, LONG 72°17.7'W N d. LAT 41°12.1'N, LONG 72°17.3'W 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 14603: Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean __________.
Y a. lower low water N b. high water N c. low water N d. sea level 15116: According to your track line, how far off New Point Comfort Spit Light "4" will you be when abeam of this light?
Y a. 0.9 mile N b. 1.2 miles N c. 1.5 miles N d. 1.8 miles 15218: What is your 2118 position?
N a. LAT 36°57.0'N, LONG 76°01.5'W Y b. LAT 36°57.4'N, LONG 76°01.9'W N c. LAT 36°57.8'N, LONG 76°01.5'W N d. LAT 36°58.2'N, LONG 76°02.4'W 15258: Which structure should you look for while trying to locate Stratford Point Light?
Y a. White conical tower with a brown band midway of height N b. White octagonal house on a cylindrical pier N c. Conical tower, upper half white, lower half brown N d. Black skeleton tower on a granite dwelling 15310: Which chart could you use for greater detail of the area at the south end of York Spit Channel?
Y a. 12222 N b. 12224 N c. 12226 N d. 12254 15638: At 2009 you are leaving New London Harbor with buoy "2"
close abeam to port. What is the true course to the Race that will leave Race Rock Light 0.5 mile abeam to port?
N a. 156° N b. 160° Y c. 164° N d. 168° 15661: At 0727, the cupola on Fishers Island is in line with Latimer Reef Light bearing 024°pgc. Based on this, the gyro error is __________.
N a. 2°E N b. 1°E N c. 0° Y d. 3°W 15713: What do the dotted lines around Goose Island and Kimberly Reef represent?
N a. Limiting danger N b. Breakers Y c. Depth contours N d. Tide rips 15820: You are northwest of Port Jefferson Harbor steering 242° per standard magnetic compass. As you continue westward, you see that the Port Jefferson Range Front Light and Rear Light come into line. If the deviation table is correct, the bearing of the range should be __________.
N a. 140°psc N b. 146°psc Y c. 157°psc N d. 160°psc 16212: What is the course per standard magnetic compass between points "A" and "B"?
N a. 094.5° N b. 095.5° Y c. 098.5° N d. 099.5° 16243: At 2207 Cape Charles Light bears 276°T, Chesapeake Light bears 194°T, and Cape Charles Lighted Bell Buoy "14" bears 312°T and is 2.0 miles off. What were the set and drift of the current acting on your vessel from 2129 to 2207?
N a. 258°T at 2.4 knots N b. 258°T at 1.5 knots N c. 078°T at 1.5 knots Y d. 078°T at 2.4 knots 16263: If you increase speed to 8 knots, and the current is 240°
at 0.7 knot. What course should you steer from your 0400 position to arrive at point A?
N a. 178°T N b. 180°T Y c. 183°T N d. 186°T 16360: What is the course to steer per gyro compass from the anchorage to point "A" if westerly winds are causing 3° of leeway?
N a. 178°pgc N b. 182°pgc N c. 184°pgc Y d. 187°pgc 16646: The Tidal Current Tables indicate the following for the Race:
SLACK WATER MAXIMUM CURRENT
0328 0642 3.9 F
0947 1301 3.2 E
What current should you expect when transiting the Race?
N a. 3.9 knots, flooding Y b. 3.5 knots, flooding N c. 3.3 knots, flooding N d. 3.0 knots, flooding