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.
81: Which company does NOT have a marine facility along the river bank in Helena (mile 658 to 665 AHP)?
N a. Riceland Food Corps.. N b. Helena Marine Services, Inc. Y c. Helena Grain Co. N d. Texas Eastern Pipeline Co. 83: Which light characteristics does Catfish Point Lower Light (mile 572.2 AHP) have?
Y a. 2 red flashes every 5 seconds N b. 5 red flashes every 2 seconds N c. 2 white flashes every 5 seconds N d. 3 red flashes every 5 seconds 101: At 1430 on 13 August, you pass Carolina Landing Light (mile 508.8 AHP). What has been the average current since 0230, 13 August if you have been making turns for 8.0 mph?
N a. 8.5 mph N b. 5.7 mph N c. 1.5 mph Y d. 0.5 mph 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. 235: At 0830, you obtained the following Radar Ranges:
New Haven Light @ 2.2 nm
Branford Reef Light @ 4.2 nm
What is your vessel's position?
N a. LAT 41°12.4'N, LONG 73°56.0'W N b. LAT 40°17.4'N, LONG 73°54.0'W Y c. LAT 41°12.4'N, LONG 72°53.8'W N d. LAT 41°13.4'N, LONG 72°53.8'W 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 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 374: You calculate that the current will be ebbing at the Race at 0700. You should expect to be set in which general direction at the Race?
N a. West Y b. East N c. Northeast N d. North 495: At 0815, visibility is excellent and you can see Montauk Point. Montauk Point is __________.
N a. low and rocky with scattered small pine trees N b. a low lying wetland Y c. a high sandy bluff N d. a flat wooded plain 499: Which chart should you use to enter Great Salt Pond?
N a. 13205 N b. 13207 N c. 13214 Y d. 13217 577: At 1015, you estimate you have 139 miles to complete the voyage. If you average 9.5 knots, you will complete the voyage in __________.
N a. 14 hours 44 minutes Y b. 14 hours 38 minutes N c. 14 hours 30 minutes N d. 14 hours 22 minutes 1125: Where would you find out which buoys, if any, are in place at Concordia Bar crossing (mile 596.0 AHP)?
Y a. Local Notice to Mariners N b. Bulletin board at the Rosedale Gage N c. Waterways Journal N d. None of the above 1286: 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 1481: On 24 May , your vessel's 1000 ZT position is LAT 25°36.0'N, LONG 118°39.5'W, when you take an azimuth of the Sun. Determine the gyro error using the azimuth information.
Chronometer time: 06h 21m 48s Chronometer error: fast 01m 36s Gyro bearing: 099.4°
Variation: 11.1°E
N a. 0.3°W Y b. 1.3°W N c. 1.8°E N d. 2.4°E 1488: At 2326 ZT, on 22 June , your vessel's position is LAT 28°30'N, LONG 150°04'W. An azimuth of the planet Jupiter is observed, and the standard compass bearing is 250.4°. The chronometer reads 09h 24m 36s and is 01m 12s slow. The variation of this area is 13.5°E. What is the deviation of the standard compass?
N a. 3.0°W N b. 3.5°W N c. 1.5°E Y d. 2.3°E 1665: On 11 January , your vessel's 0655 zone time DR position is LAT 24°30'N, LONG 122°02'W, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 101.0° per standard compass. Variation in the area is 11.6°E. The chronometer reads 02h 52m 48s and is 02m 12s slow. What is the deviation of the standard compass?
Y a. 1.4°E N b. 1.4°W N c. 4.6°E N d. 4.6°W 1670: On 10 August , your vessel's 0426 zone time DR position is LAT 52°07'N, LONG 142°16'E, when an amplitude of the Sun is observed. The Sun's lower limb is about 20 minutes of arc above the visible horizon and bears 074.5° per standard compass. Variation in the area is 12°W. The chronometer reads 07h 24m 19s and is 02m 34s fast. Which of the following is the deviation of the standard compass?
N a. 0.0° N b. 1.3°W Y c. 1.3°E N d. 2.3°W 1734: You pass Springfield Bend Lt. (mile 244.8 AHP) at 1242, on 17 October, and estimate the current will average 2.5 mph for the remainder of your trip. What is your ETA at the mouth of the Ohio River if you are making turns for 10.5 mph?
N a. 1905, 19 October N b. 0207, 21 October Y c. 0519, 21 October N d. 0847, 21 October 1767: What is the vertical clearance of the Natchez-Vidalia Highway Bridge when the Natchez-Vidalia Highway Bridge Gage reads 23.4 feet?
Y a. 102.6 ft N b. 108.3 ft N c. 119.5 ft N d. 125.6 ft 1768: The Natchez Gage reads 14.5 feet. The high point on your towboat is 47 feet above the water. What is the vertical clearance as you pass under the Natchez - Vidalia Highway Bridge?
N a. 58.0 feet Y b. 64.5 feet N c. 72.5 feet N d. 78.6 feet 1926: On 23 September , your 1836 DR position is LAT 25°18'S, LONG 162°36'E. You observe an unidentified star bearing 022°T at an observed altitude (Ho) of 13°16'. The chronometer reads 07h 34m 12s, and is 01m 54s slow. What star did you observe?
N a. Antares Y b. Deneb N c. Achernar N d. Sirius 1928: On 17 March , your 0520 DR position is LAT 27°23.0'N, LONG 39°42.0'W. At this time you observe an unidentified star bearing 270°T with an observed altitude of 46°30.2'. The chronometer reads 08h 22m 15s, and is 01m 45s fast. What star did you observe?
N a. Altair N b. Alkaid Y c. Arcturus N d. Deneb 2082: From your 0100 position, you change course to 258° per standard magnetic compass. Your engine speed is 10.0 knots. A short time later, your fathometer reads 51 feet (15.5 meters) under the keel. What is the water depth?
N a. 42.5 feet (12.9 meters) N b. 51.0 feet (15.5 meters) Y c. 59.5 feet (18.0 meters) N d. 60.4 feet (18.4 meters) 2169: At 0600 ZT, on 24 July , your DR position is LAT 22°37'N, LONG 32°45'W. You are steering 185°T at a speed of 20.0 knots. Determine the computed altitude (Hc) and azimuth (Zn) for an observation of the Sun's lower limb taken at 1030 ZT. At this time the chronometer reads 00h 30m 16s and is 0m 31s slow.
N a. Hc 64°27.5' Zn 092.3° N b. Hc 64°30.8' Zn 090.1° Y c. Hc 64°41.7' Zn 087.8° N d. Hc 64°44.2' Zn 094.7° 2703: You are underway on course 254°T at a speed of 16.5 knots. You sight a rock bearing 255°T at a radar range of 6.1 miles at 0916. If you change course at 0922, what is the course to steer to leave the rock abeam to starboard at 1.5 miles?
N a. 268°T N b. 239°T Y c. 236°T N d. 233°T 2704: You are underway on course 340°T at a speed of 14.8 knots.
You sight a buoy bearing 342°T at a radar range of 4.8 miles at 1422. If you change course at 1428, what is the true course to steer to leave the buoy abeam to port at 1.0 mile?
N a. 327°T N b. 354°T N c. 357°T Y d. 001°T 2705: While on a course of 192°T, a light bears 11° on the starboard bow at a distance of 12.7 miles. What course should you steer to pass 3 miles abeam of the light leaving it to starboard?
N a. 167°T N b. 173°T N c. 185°T Y d. 189°T 2878: Your vessel is steering 143°T at 16 knots. At 2147 a light bears 106°T, and at 2206 the same light bears 078°T. What will be your distance off abeam?
N a. 5.1 miles N b. 5.4 miles Y c. 5.9 miles N d. 6.5 miles 3647: The true course between two points is 220°. Your gyrocompass has an error of 1°E. You make an allowance of 1° leeway for a north-northwest wind. What gyro course should be steered to make the true course good?
Y a. 220°pgc N b. 221°pgc N c. 222°pgc N d. 223°pgc 10501: At 0939 your GPS position is LAT 36°57.0'N, LONG 75°41.0'W. You are on course 119° per standard magnetic compass at a speed of 12.8 knots. At 1017 your GPS indicates your position as LAT 36°54.2'N, LONG 75°33.1'W. What were the set and drift?
N a. 280°T at 1.0 knot Y b. 275°T at 1.8 knots N c. 091°T at 1.6 knots N d. 103°T at 1.1 knots 10601: At 1645 your GPS position is LAT 41°09.2'N, LONG 72°36.9'W. You are steering course 262° per standard magnetic compass at a speed of 12 knots. At 1721 you fix your position by plotting several compass bearings on nearby known fixed objects. These result in a position of LAT 41°07.2'N, LONG 72°44.9'W. What were your set and drift?
N a. 040°T at 0.8 knot Y b. 030°T at 1.7 knots N c. 225°T at 0.9 knot N d. 242°T at 1.1 knots 11507: 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 1222 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good?
N a. 8.4 knots N b. 8.6 knots Y c. 9.2 knots N d. 9.6 knots 11900: What is the true course to steer between the entrance to Great Salt Pond (LAT 41°12.0'N, LONG 71°35.6'W) and the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W), if you are turning for 8.5 knots, and you allow for a current of 247°T at 1.2 knots, and an easterly wind is causing 2° of leeway?
N a. 314°T N b. 320°T N c. 328°T Y d. 333°T 11904: What is the true course to steer between the entrance to Winnapaug Pond (LAT 41°19.6'N, LONG 71°45.8'W) and the entrance to Lake Montauk (LAT 41°04.8'N, LONG 71°56.3'W), if you are turning for 6.5 knots, allow for a current of 295°T at 0.9 knot, and an easterly wind is causing 4° of leeway?
Y a. 196°T N b. 200°T N c. 213°T N d. 217°T 13305: What are the bottom characteristics of Nautilus Shoal (LAT 37°03'N, LONG 75°56'W)?
N a. Sand and shells N b. Hard sand Y c. Fine gray sand N d. Mud and sand 13901: The precautionary area southeast of Block Island refers to a __________.
Y a. recommended traffic lane N b. military exercise area N c. national marine refuge N d. dumping ground for hazardous wastes 14401: You are underway and steaming in an easterly direction on the Columbia River. Your vessel is positioned in the middle half of Cape Horn Channel and is abeam of Cape Horn Light. What should your fathometer read at this position, if the staff gauge at Portland reads 0 feet?
N a. 16 feet N b. 18 feet Y c. 22 feet N d. 24 feet 15044: At 0841 Chesapeake Light bears 164° true, Cape Charles Light bears 312° true, and Cape Henry Light bears 247°
true. What was your course made good since 0811?
Y a. 226°true N b. 230°true N c. 233° true N d. 237°true 15211: You have just passed York River Entrance Channel Lighted Buoys "13" and "14". The chart shows a light approximately 1.0 mile off your port beam with a light characteristic "Fl 6 sec". What is the name of this light?
N a. Mobjack Bay Entrance Light N b. New Point Comfort Shoal Light Y c. York Spit Light N d. York River Entrance Channel Light "1" 15741: At 2050 Montauk Point Light is bearing 337° true at a range of 8 nm, From this position, you change course in order to pass 1 mile due east of Montauk Point Lighted Whistle Buoy "MP". If there are no set and drift, what course must you steer?
Y a. 024°T N b. 028°T N c. 032°T N d. 036°T 15757: If you change course at 0610, what is the course to steer per gyro compass to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")?
N a. 072°pgc Y b. 076°pgc N c. 080°pgc N d. 084°pgc 15839: From your 2000 position you change course to 206°T. What time would you expect to be abeam of Hog Island Buoy "12"?
N a. 2021 Y b. 2026 N c. 2031 N d. 2040 15843: You continue to steer 195°T. You pass Cape Charles Lighted Bell Buoy "14", 0.9 miles abeam to starboard at 2111. Your speed made good from 2045 to 2111 is __________.
N a. 13.7 knots N b. 14.1 knots N c. 14.5 knots Y d. 14.8 knots 16061: You have just passed York River Entrance Channel Lighted Buoys "13" and "14". The chart shows a light approximately 1.0 mile off your port beam with a light characteristic "Fl 6 sec". What is the name of this light?
N a. Mobjack Bay Entrance Light Y b. York Spit Light N c. New Point Comfort Light N d. York River Entrance Channel Light "1" 16064: 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 (-.3 meter). What is the approximate depth under the keel?
N a. 51 feet (15.5 meters) Y b. 45 feet (13.6 meters) N c. 40 feet (12.1 meters) N d. 35 feet (10.6 meters) 16119: At 0812, you obtain the following radar information:
Cape Henry Light bearing 287° pgc @ 3.85 nm
What is your 0812 position?
N a. LAT 36°53.7'N, LONG 75°56.0'W N b. LAT 36°53.8'N, LONG 75°56.1'W N c. LAT 36°54.5'N, LONG 75°56.2'W Y d. LAT 36°54.6'N, LONG 75°55.8'W 16339: Based on your 2209 fix, which would be a warning that you are being set down on Block Island Sound South Entrance Obstruction Lighted "BIS" Buoy?
Y a. Decreasing loran readings on 9960-W N b. Visual bearings of Montauk Point Lt. changing to the left N c. Increasing bearings of Southeast Point Light N d. Decreasing soundings 16418: At 2100, you set course of 000°T, speed 10 knots from LAT 41°07.0'N, LONG 71°30.0'W. Visibility is 5.5 n.m. What is the earliest time you can expect to sight Point Judith Light? (Use charted range of 20 miles as nominal range.)
N a. The light is visible at 2100. Y b. 2114 N c. 2123 N d. 2131 16620: You sight Bartlett Reef Light in line with New London Harbor Light bearing 043°pgc. You are heading 088°pgc and 098.5° per standard magnetic compass at the time of the observation. Which statement is TRUE?
N a. The true heading at the observation was 090°. Y b. The deviation is 1.5°E by observation. N c. The magnetic compass error is 9.5°W. N d. The gyro error is 2°E.