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.
37: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads -3.6 feet. If the highest point on your vessel is 62 ft. above the water, what is your vertical clearance?
N a. 122.0 feet Y b. 67.6 feet N c. 63.6 feet N d. 60.0 feet 39: At 1227, on 19 October, you pass under the Greenville Highway Bridge (mile 531.3 AHP). What speed must you average to arrive at Jimmy Hawken Light (mile 663.5 AHP) at 0930 the following day?
Y a. 6.3 mph N b. 5.9 mph N c. 5.6 mph N d. 5.2 mph 43: You have received orders to proceed to the Amoco Pipeline Co. (mile 253.6 AHP) above Baton Rouge. If your vessel is making turns for 9 mph with an estimated average current of 1.5 mph, what is your ETA at the Amoco docks?
N a. 0844, 28 Aug N b. 1454, 28 Aug Y c. 1444, 27 Aug N d. 2214, 27 Aug 76: What daymark should you see as you approach Parker Landing Light (mile 924.6 AHP)?
N a. Green square Y b. Green diamond N c. Red and green rectangle N d. Green triangle 93: Which light characteristics does Quaker Oats Light (mile 952.6) have?
N a. 1 red flash every four seconds N b. 2 green flashes every 5 seconds N c. 2 red flashes every 4 seconds Y d. 2 red flashes every 5 seconds 333: From your noon position, if there is no set and drift, what is your course per standard magnetic compass to the "NCA" (LL #375) buoy?
N a. 221°psc N b. 219°psc Y c. 217°psc N d. 215°psc 345: The characteristic of Branford Reef Light is __________.
N a. flashing red every 4 seconds N b. flashing red every 3 seconds N c. flashing yellow every 4 seconds Y d. flashing white every 6 seconds 354: The south shore of Long Island Sound from Horton Point to Orient Point is __________.
Y a. bluff and rocky N b. low and marshy N c. marked by sandy beaches and wooded uplands N d. bound by gradual shoaling 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 522: In clear weather, how far away will you sight Point Judith Light? (use charted range of 20 miles as nominal range)
Y a. 14.0 nm N b. 12.3 nm N c. 10.6 nm N d. 9.2 nm 558: At 0530, you change course to 090°T and increase speed to 8.5 knots. What is the course to steer per gyro compass if northerly winds are causing 2° of leeway?
N a. 094°pgc N b. 092°pgc Y c. 090°pgc N d. 088°pgc 606: At 0915 zone time, on 11 May , you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 19.5 knots. The distance is 4,276 miles. What is your estimated zone time of arrival at Seattle?
Y a. 1932, 19 May N b. 0332, 20 May N c. 1032, 20 May N d. 1232, 20 May 662: You are planning a voyage by great circle from LAT 38°00'N, LONG 73°00'W to LAT 49°00'N, LONG 06°00'W. Which of the following statements is TRUE? (Use gnomonic tracking chart WOXZC 5274)
N a. You will pass to the south of icebergs reported extending to 100 miles south of Cape Race Newfoundland. Y b. The shoals with a 25-mile radius around Sable Island will be a hazard. N c. You will reach the maximum northerly latitude at longitude 29°45'W. N d. The distance is measured in 60-mile segments using the length of a degree of latitude at the vertex. 680: On which voyage would a great circle track provide a significant savings in distance to steam, when compared to a rhumb line track? (Use gnomonic tracking chart WOXZC 5270.)
N a. Valdez, AK, to the Marquesas Islands (LAT 8°00'S, LONG 140°00'W) N b. San Francisco to Kodiak, AK N c. Christmas Island (LAT 2°00'N, LONG 157°30'W) to Singapore via LAT 3°00'N, LONG 126°00'E Y d. Guam (LAT 14°00'N, LONG 145°00'E) to Seattle via LAT 47°30'N, LONG 125°30'W 707: What is the width of the widest span of the Cairo Highway Bridge (Upper Mississippi River mile 1.3)?
N a. 503 feet N b. 625 feet Y c. 675 feet N d. 800 feet 1192: On 3 October , your 0830 ZT position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course 280°T at a speed of 19.0 knots. What is the ZT of local apparent noon (LAN)?
N a. 1151 N b. 1154 N c. 1158 Y d. 1201 1274: On 13 February , at 0325 zone time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T at a speed of 13.6 knots. What is the zone time of sunrise?
N a. 0652 Y b. 0657 N c. 0706 N d. 0711 1342: What is the vertical clearance between the highest point of your towboat, if it is 45 feet above the water, and if the Natchez Gage reads 23.4 feet when passing under the Natchez-Vidalia Westbound Highway Bridge?
N a. 67.5 feet Y b. 57.1 feet N c. 52.2 feet N d. 45.2 feet 1705: What is the mile point of the Rosedale, MS Gage?
N a. 554.2 AHP Y b. 592.2 AHP N c. 632.5 AHP N d. 663.0 AHP 1741: You have received orders to proceed to the Amoco Pipeline Co. (mile 253.6 AHP) above Baton Rouge. If your vessel is making turns for 9 mph with an estimated average current of 1.5 mph, what is your ETA at the Amoco docks?
N a. 2044, 25 Aug N b. 0214, 26 Aug N c. 0745, 26 Aug Y d. 0845, 26 Aug 1772: What is your ETA at the Fulton Gage?
N a. 1405, 12 Sept N b. 1052, 12 Sept N c. 0828, 12 Sept Y d. 0204, 12 Sept 1956: At 1923, you increase speed to make good 9.2 mph. What is the first gage you will pass after your speed change?
N a. Cottonwood Point Y b. Caruthersville N c. Fulton N d. New Madrid 2013: On 28 October , morning twilight will occur around 0524 ZT in LAT 25°25.0'N, LONG 32°33.3'W. Considering their magnitude and location, which group will be the three stars best suited to observe for a star fix at star time?
N a. Sirius, Hamal, Denebola N b. Sirius, Denebola, Dubhe Y c. Sirius, Capella, Denebola N d. Sirius, Mirfak, Hamal 2019: On 15 October , your 0300 zone time DR position is LAT 27°14'S, LONG 99°46'E. You are on course 128°T at a speed of 19 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Jupiter, Alphard, Betelgeuse N b. Mars, Regulus, Canopus N c. Achernar, Suhail, Alphard Y d. Achernar, Procyon, Aldebaran 2089: At your current speed of 18 knots you only have enough fuel remaining to travel 316 miles. You must travel 731 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
N a. 10.4 Y b. 11.8 N c. 13.2 N d. 14.6 2212: At 1650 you decrease speed to make good 7.1 mph. At 2020 you are __________.
Y a. abeam of Old River Control Structure Light N b. entering the Vicksburg District of the U.S. Army Corps. of Engineers N c. at Palmetto Point N d. at Latitude 31°10'N 2282: You observe the lower limb of the Sun at a sextant altitude (hs) of 42°44.0' on 22 June . The index error is 0.8' off the arc. The height of eye is 70 feet (21.3 meters). What is the observed altitude (Ho)?
N a. 42°19.8' N b. 42°21.7' Y c. 42°51.7' N d. 42°54.2' 2577: On 23 July, you take a time tick using the 0900 GMT Cape Town broadcast. You hear a repeating series of 59 dots followed by a dash. At the beginning of the fifth dash you start your stopwatch. The chronometer reads 08h 39m 16s at the time the stopwatch reads 01m 42s. The chronometer error at 0900 GMT, 22 July, was 22m 24s slow. What is the chronometer rate?
Y a. 00m 02s losing N b. 01m 02s gaining N c. 22m 24s losing N d. 22m 26s slow 2680: While on course 321°pgc with a 1°W gyro error, you pick up a buoy on radar bearing 001° relative at 5.2 miles. What will be the course to pass the buoy by 1 mile abeam to starboard, if you change course when the buoy is 4.5 miles away?
N a. 305°T Y b. 310°pgc N c. 316°T N d. 336°pgc 2684: You are steering 173°T, and a light is picked up dead ahead at a distance of 13.9 miles at 0054. You change course to pass the light 4.5 miles off abeam to port. If you are making 21 knots, what is your ETA at the position 4.5 miles off the light?
N a. 0122 N b. 0125 Y c. 0131 N d. 0134 2883: Your vessel is steering 157°T at 18 knots. At 2018 a light bears 208°T. At 2044 the same light bears 232°T. What will be your distance off when abeam?
N a. 12.8 miles Y b. 14.4 miles N c. 15.2 miles N d. 16.7 miles 2897: You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your distance off at the second bearing?
N a. 8.5 miles Y b. 8.9 miles N c. 9.2 miles N d. 9.7 miles 3092: If the pitch of the propeller is 24.8 feet, and the revolutions per day are 93,373, calculate the day's run allowing 11% positive slip.
N a. 307.3 miles Y b. 339.0 miles N c. 380.9 miles N d. 422.8 miles 3632: You desire to make good a true course of 157°. The variation is 15°E, magnetic compass deviation is 9°W, and gyrocompass error is 3°E. A southwesterly wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 145°psc N b. 147°psc N c. 150°psc Y d. 153°psc 3648: The true course between two points is 312°. Your gyrocompass has an error of 3°W. You make an allowance of 4° leeway for a west by south wind. What gyro course should be steered to make the true course good?
N a. 305°pgc Y b. 311°pgc N c. 315°pgc N d. 318°pgc 3757: 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 311°T, and the variation is 8°E. If the heading of your vessel at the time of the sighting is 305° per standard magnetic compass, what is the correct deviation?
N a. 2°E Y b. 2°W N c. 6°E N d. 6°W 3761: 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 283°
T, and the variation is 13°E. If the heading of your vessel at the time of the sighting is 278° per standard compass, what is the deviation?
N a. 5°E N b. 5°W N c. 8°E Y d. 8°W 4010: 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 magnetic compass heading of 104°.
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. 1.8°E N b. 2.6°E Y c. 2.2°W N d. 2.7°W 10106: What is the course per standard magnetic compass from Chesapeake Light to North Chesapeake Entrance Lighted Whistle Buoy NCA?
N a. 316°psc Y b. 321°psc N c. 323°psc N d. 326°psc 10700: At 1020 your position is LAT 41°11.0'N, LONG 71°50.0'W. You are on course 056° per standard magnetic compass at 9.2 knots. At 1112 your position is LAT 41°15.9'N, LONG 71°41.7'W. What were the set and drift?
N a. 130°T at 0.9 knot Y b. 141°T at 1.2 knots N c. 331°T at 0.8 knot N d. 346°T at 1.1 knots 13409: You plan to anchor your vessel at LAT 41°00.5'N, LONG 73°02.8'W. What type of bottom should you expect at this position?
N a. Gray sand Y b. Soft mud N c. Hard sand N d. Gray mud 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 15158: At 1630, you reach point "A" and come right to 204°T. Your engine speed is 12 knots. Your 1715 position is LAT 37°09.8'N, LONG 75°37.4'W. The current was __________.
N a. 067°T at 1.1 knots Y b. 067°T at 1.5 knots N c. 247°T at 1.1 knots N d. 247°T at 1.6 knots 15208: At 1750, your position is LAT 37°14.5'N, LONG 76°22.9'W. What was the course made good between 1730 and 1750?
N a. 072°T N b. 075°T Y c. 078°T N d. 080°T 15214: If you steer 143°pgc from your 2015 position at an engine speed of 8.0 knots, at what time would you reach a point midway between buoys "11" and "12" (ignore set and drift)?
N a. 2023 Y b. 2029 N c. 2032 N d. 2037 15440: Your ETA at Chesapeake Bay Bridge and Tunnel between trestles B + C is 2300. If your engine speed is 9.8 knots,
what will be your approximate speed over the ground, at that time, allowing for the predicted current?
N a. 7.0 knots N b. 8.2 knots N c. 11.4 knots Y d. 12.5 knots 15468: Which loran line of position will serve as a danger reading on the loran to keep you west of the submerged obstruction at LAT 37°24.2'N, LONG 76°03.7'W, after you leave York Spit Channel?
N a. Not less than 9960-Z-58622 N b. Not more than 9960-Y-41595 N c. Not less than 9960-Y-41595 Y d. Not less than 9960-X-27246 15808: 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 15819: You must arrive at your final destination by 0800. The distance from your 0300 position to the final destination is 40.5 miles. What minimum speed must be made good to arrive on time?
Y a. 8.1 knots N b. 8.5 knots N c. 9.3 knots N d. 9.6 knots 15910: At 0802, Branford Reef Light bears 348°T at 0.75 mile,
and the north point of Falkner Island bears 088°T at 6.7 miles. What were the set and drift since 0740?
N a. Set 040°T, drift .3 knot Y b. Set 220°T, drift .9 knot N c. Set 220°T, drift .3 knot N d. You are making good your intended course and speed. 16106: At 0410, you take the following bearings:
New Point Comfort Light "2" 242°T
Wolf Trap Light 313°T
Horn Harbor Entrance Light "HH" 262°T
What is your 0410 position?
Y a. LAT 37°21.0'N, LONG 76°08.1'W N b. LAT 37°21.0'N, LONG 76°08.8'W N c. LAT 37°21.1'N, LONG 76°07.9'W N d. LAT 37°21.2'N, LONG 76°08.2'W 16114: As you pass through the Chesapeake Bay Bridge and Tunnel,
you sight Trestle "A" in line bearing 198°pgc. What is the gyro error?
N a. 2°E N b. 0°E Y c. 2°W N d. 4°W 16568: From your 1930 position, you plot a course to pass 0.5 mile due south of Race Rock Light. If your vessel's speed is 8.0 knots, the current's set and drift are 040°T at 1.4 knots,
and a south wind produces a 3° leeway, what true course should you steer to make good your desired course?
Y a. 275°T N b. 280°T N c. 290°T N d. 294°T 16607: You depart from the position in the previous question at 2114 and make good 12 knots on a course of 040°T. At what time will you sight New Haven Light if the visibility is 11 miles?
N a. The light is visible at 2114. N b. 2140 N c. 2152 Y d. 2159