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.
115: After passing Wilkinson Lt. (mile 310.0 AHP) you see a flashing amber light on the right descending bank ahead. The flashing light indicates that you should __________.
N a. stay in the deepest water N b. slow down due to dredging operations N c. keep as close to the right descending bank as safety permits Y d. keep as close to the left descending bank as safety permits 209: At 0705, you take the following bearings:
Watch Hill Light 034.5°pgc
Latimer Reef Light 338.0°pgc
Race Rock Light 268.0°pgc
What was the true course made good between 0645 and 0705?
Y a. 253°T N b. 256°T N c. 263°T N d. 266°T 248: You are southeast of Saybrook Breakwater Light passing Saybrook Bar Lighted Bell Buoy "8". This buoy marks __________.
N a. a sunken wreck N b. a bifurcation N c. the junction with the Connecticut River Y d. shoal water 252: At 0100, you obtain the following radar ranges:
Inlet Point - 2.7 miles,
Rocky Point - 4.5 miles,
Horton Point - 1.0 mile.
What was the speed made good between 0045 and 0100?
N a. 6.7 knots Y b. 7.2 knots N c. 8.0 knots N d. 8.7 knots 367: What is the distance from your 0731 fix to Wilmington, N.C. (LAT 34°14.0'N, LONG 77°57.0'W)?
N a. 486 miles N b. 402 miles N c. 363 miles Y d. 339 miles 376: You depart LAT 40°42.0'N, LONG 74°01.0'W, and steam 3365.6 miles on course 118°T. What is the longitude of your arrival by Mercator sailing?
N a. 24°29.0'W N b. 22°58.0'W Y c. 17°41.0'W N d. 10°46.0'W 476: The great circle distance from LAT 35°08.0'S, LONG 19°26.0'E to LAT 33°16.0'S, LONG 115°36.0'E is 4559 miles and the initial course is 121°T. Determine the longitude of the vertex.
N a. 26°50.9'E Y b. 65°45.9'E N c. 69°19.1'E N d. 72°18.3'E 494: What action should you take to compensate for the above current?
N a. Continue on the same course and speed. N b. Alter your course to the right. N c. Slow to 8.5 knots. Y d. Alter your course to the left. 529: You depart LAT 51°48.0'S, LONG 178°35.0'W and steam 179 miles on course 270°. What is the longitude of arrival?
N a. 173°47'W N b. 174°27'E Y c. 176°36'E N d. 179°52'W 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 735: On 22 August , your 1852 zone time DR position is LONG 155°54.0'E. At that time you observe Polaris with a sextant altitude (hs) of 27°36.9'. The chronometer time of the sight is 08h 54m 06s, and the chronometer error is 02m 20s fast. The index error is 3.6' off the arc, and the height of eye is 61.5 feet. What is your latitude by Polaris?
N a. 27°05.5'N N b. 27°31.0'N Y c. 28°05.9'N N d. 28°09.5'N 833: On 17 November , in DR position LAT 01°14.4'S, LONG 148°45.5'E, you take an ex-meridian observation of the planet Venus at upper transit. The chronometer time of the sight is 05h 31m 42s, and the chronometer error is 01m 50s fast. The sextant altitude (hs) is 64°41.1'. The index error is 1.8' off the arc, and your height of eye is 50 feet. What is the latitude at meridian transit?
N a. LAT 01°14.4'S N b. LAT 01°16.3'S Y c. LAT 01°18.0'S N d. LAT 01°20.2'S 1187: On 17 March , your 0800 zone time DR position is LAT 21°27.0'N, LONG 65°25.0'W. Your vessel is on course 105°T at a speed of 17.5 knots. What is the zone time of local apparent noon (LAN)?
N a. 1210 N b. 1218 Y c. 1225 N d. 1231 1209: It is 22 October and you are keeping zone time +4. You are on course 083°T, speed 24 knots. Your 0820 DR position is LAT 26°10.0'N, LONG 52°20.0'W. What is the time of the second estimate of LAN by ship's clocks?
N a. 10h 04m 36s N b. 10h 04m 53s N c. 11h 04m 37s Y d. 11h 08m 54s 1225: You estimate the current at 2.0 mph. What is the speed over the ground?
N a. 9.5 mph Y b. 5.5 mph N c. 5.0 mph N d. 4.5 mph 1261: On 16 February , your 0300 ZT DR position is LAT 28°32.0'S, LONG 176°49.0'E. You are on course 082°T at a speed of 21 knots. What will be the zone time of sunrise at your vessel?
N a. 0534 Y b. 0552 N c. 0631 N d. 0645 1423: You pass Ratcliff Light (mile 289.8) at 1650. What was your average speed since leaving Baton Rouge?
N a. 7.3 mph Y b. 7.6 mph N c. 8.0 mph N d. 8.3 mph 1423: You pass Ratcliff Light (mile 289.8) at 1650. What was your average speed since leaving Baton Rouge?
N a. 7.3 mph Y b. 7.6 mph N c. 8.0 mph N d. 8.3 mph 1538: At 1032 on 24 June, you pass Carolina Landing Light(508.8 AHP). What has been the average current since 2350, 23 June, if you have been making turns for 9.0 mph?
N a. 8.5 mph N b. 5.7 mph N c. 1.5 mph Y d. 0.5 mph 1851: On 23 September , while taking stars for an evening fix, an unidentified star is observed bearing 261°T at an observed altitude of 61°35'. Your 1836 zone time DR position is LAT 25°18'S, LONG 162°36'E. The chronometer reads 07h 34m 12s, and the chronometer error is 01m 54s slow. Your vessel is steaming on a course of 230°T at a speed of 18 knots. What star did you observe?
Y a. Antares N b. Canopus N c. Achernar N d. Sirius 1873: On 12 June , your 1845 DR position is LAT 21°47'N,
LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 174.0°T at a sextant altitude (hs) of 18°58.6'. The index error is 0.5°
on the arc, and the height of eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
Y a. Muhlifain N b. Alpha Hydri N c. Almak N d. Alpha Muscae 2245: You are entering the channel at buoy 29 and turning for 9 knots. An easterly wind is causing 3°
of leeway and the current is 320°T at 1.2 knots. What true course should you steer to remain in the middle leg of York Spit Channel?
N a. 162°T Y b. 165°T N c. 168°T N d. 171°T 2339: You have steamed 1260 miles at 18 knots, and consumed 205 tons of fuel. If you have to steam 1423 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 16 knots?
N a. 143 tons N b. 183 tons Y c. 293 tons N d. 333 tons 2424: As you approach mile 225 AHP, you notice on the map a brown broken-lined rectangular shaped area along the bank. This indicates __________.
N a. weirs N b. a revetment Y c. a fleeting area N d. utility crossing 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 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 2866: Your vessel is on a course of 311°T at 21 knots. At 1957 a light bears 337.5°T, and at 2018 the light bears 356°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 2027, 5.2 miles N b. 2033, 6.8 miles Y c. 2039, 7.4 miles N d. 2043, 10.3 miles 2875: Your vessel is on a course of 316°T at 12 knots. At 2326 a light bears 289.5°T, and at 2354 the light bears 271°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0014, 4.8 miles N b. 0018, 5.2 miles Y c. 0022, 5.6 miles N d. 0026, 6.4 miles 2891: You are steaming on course 168°T at a speed of 18 knots. At 1426 you sight a buoy bearing 144°T. At 1435 you sight the same buoy bearing 116°T. What is your distance off at the second bearing and predicted distance when abeam?
Y a. 2.3 miles 2nd bearing, 1.8 miles abeam N b. 2.5 miles 2nd bearing, 2.8 miles abeam N c. 2.8 miles 2nd bearing, 1.8 miles abeam N d. 3.3 miles 2nd bearing, 2.8 miles abeam 3471: You are underway on course 172°T at 18.5 knots. The current is 078°T at 2.8 knots. What is the speed being made good?
Y a. 18.5 knots N b. 19.0 knots N c. 19.5 knots N d. 20.0 knots 3755: 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 186°T, and the variation is 11°W. If the heading of your vessel at the time of the sighting is 193° per standard magnetic compass, what is the correct deviation?
Y a. 4°E N b. 4°W N c. 7°E N d. 7°W 4013: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a gyro heading of 039°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 354° 122.5° - 114° 239.5° - 234°
030.5° - 024° 152.0° - 144° 269.0° - 264°
061.5° - 054° 181.0° - 174° 298.0° - 294°
092.0° - 084° 210.0° - 204° 327.5° - 324°
N a. 0.8°E N b. 0.0° N c. 0.5°W Y d. 1.0°W 10904: What is the distance from Chesapeake Bay entrance to Baltimore?
Y a. 150 nm N b. 162 nm N c. 173 nm N d. 247 nm 11009: What best describes the structure from which Stratford Point Light is shown?
N a. Brown conical tower with white horizontal band in center of light on black pier N b. Red conical tower on brown cylindrical pier N c. White octagonal house on brown cylindrical pier Y d. White conical tower, with brown band midway of height 11300: At 1256 your GPS position is LAT 36°57.0'N, LONG 75°41.0'W. At 1336 your position is LAT 37°07.5'N, LONG 75°39.1'W. What was the speed made good between the fixes?
N a. 14.6 knots N b. 15.2 knots Y c. 16.0 knots N d. 18.6 knots 11410: At 0647 a GPS fix places your vessel 1 mile due south of buoy "8C" (buoy position LAT 41°10.8'N, LONG 72°29.4'W). At 0753 another GPS fix places your vessel at LAT 41°08.6'N, LONG 72°41.6'W. What were your true course and speed made good?
N a. 088° at 9.6 knots N b. 192° at 8.8 knots Y c. 263° at 8.5 knots N d. 268° at 9.1 knots 11704: What is the true heading to steer in York River Entrance Channel if your engines are turning for 10.2 knots, the current is 220°T at 1.2 knots and a southwesterly wind causes 3° of leeway?
N a. 316°T Y b. 313°T N c. 309°T N d. 300°T 11704: What is the true heading to steer in York River Entrance Channel if your engines are turning for 10.2 knots, the current is 220°T at 1.2 knots and a southwesterly wind causes 3° of leeway?
N a. 316°T Y b. 313°T N c. 309°T N d. 300°T 11811: What is the true course to steer between Horton Pt. Light and a position 2 miles due south of Branford Reef Light, if the set and drift of the current are 40°T at 1.5 knots, and an easterly wind will cause 3° of leeway? Your engines are making turns for 12 knots.
N a. 277°T N b. 283°T Y c. 287°T N d. 291°T 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 12303: You are on course 056° per standard magnetic compass when you sight Block Island North Light in line with the Block Island Aero Beacon bearing 193° per standard magnetic compass. Based on this you __________.
N a. know the compass error is 4°E N b. should swing your vessel to check for deviation Y c. know the deviation table is correct for that heading N d. should use 3°W deviation on bearings of 193°psc 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 14502: You are proceeding in an easterly direction on the Columbia River. The pool level of the Bonneville reservoir stands at 84 feet above MSL. If the highest point on your vessel is 49 feet above the water, what will be the vertical clearance as you pass under the center of the Bridge of the Gods?
Y a. 74.0 feet N b. 86.0 feet N c. 97.5 feet N d. 123 feet 14601: Where would you look for information on the restricted areas shown on the chart immediately above and below the spillway at The Dalles Lock & Dam ?
N a. Light List - Vol II Y b. Coast Pilot 7 - Chapter 2 N c. Notice to Mariners N d. Sailing directions 15270: The distance from New London to the east entrance of the Cape Cod Canal is __________.
N a. 66 miles N b. 77 miles Y c. 89 miles N d. 136 miles 15345: You are making good a course of 060°T at a speed of 13.5 knots. At 1855 Block Island North Light bears 086°T; at 1910 Block Island North Light bears 108°T; and at 1930 the same light bears 184°T. Which statement is TRUE about your 1930 running fix position?
Y a. You are on the edge of a cable area. N b. The bottom is mud, sand, and clay. N c. The wavy magenta lines to the north through east of your position are designated lobstering areas. N d. You are inside the 120 fathom curve 15511: From your 1830 fix, you come left to a course of 290°T.
Which of the following statements concerning Watch Hill Light is FALSE?
N a. The nominal range of its white light is 15 miles. N b. It displays both red and white lights. N c. Its horn blasts every 30 seconds in fog. Y d. Its geographic range is 18.5 miles at a 35 foot (10.7 meter) height of eye. 15566: At 0520 you take the following observations:
Point Judith Light 036°pgc
Point Judith Harbor of Refuge
Main Breakwater Center Light 312°pgc
What is the position of your 0520 fix?
Y a. LAT 41°20.8'N, Long 71°29.7'W N b. LAT 41°20.8'N, Long 71°30.0'W N c. LAT 41°20.6'N, Long 71°30.0'W N d. LAT 41°20.5'N, Long 71°29.8'W 15656: At 0630, Buoy "PI" is close abeam on the starboard side. You are steering 078°T and are headed directly toward Race Rock Light. At 0654, Little Gull Island Light is bearing 210°pgc and Race Rock Light is bearing 075°pgc. What is your 0654 position?
N a. LAT 41°19.0'N, LONG 72°05.2'W N b. LAT 41°14.4'N, LONG 71°54.6'W N c. LAT 41°14.2'N, LONG 72°06.8'W Y d. LAT 41°14.0'N, LONG 72°05.3'W 15763: At 0715, you take the following bearings:
Race Rock Light 324°pgc
Little Gull Island Light 245°pgc
Mt. Prospect Antenna 034°pgc
Based on your 0715 fix, which statement is TRUE?
N a. You are to the right of your track line. Y b. The charted depth is about 265 feet (80.3 meters). N c. You are in a cable area. N d. You are governed by the Inland Rules. 15830: The black broken-line marking, across the river, that appears at mile 952.1 AHP represents a __________.
Y a. utility crossing N b. railroad N c. submarine crossing N d. revetment 15963: At 1845, you obtain the following Radar Ranges:
Old Plantation Flats Light @ 7.45nm
New Point Comfort Light @ 7.35nm
Your latitude is __________.
N a. 37°11.4'N Y b. 37°11.2'N N c. 37°10.9'N N d. 37°10.7'N 16413: At 1104, Watch Hill Point Light is in line with Stonington Outer Breakwater Light, the range to the south tip of Watch Hill Point is 2.6 miles and the range to the beach is 1.9 miles. You are steering to make good 075°T, speed 10.0 knots. At 1110, you change course to head for a position of LAT 41°05.0'N, LONG 71°50.0'W. What is the true course?
N a. 185° N b. 187° Y c. 190° N d. 193° 16440: What course per gyrocompass would you need to steer from the anchorage to York Spit Channel buoy "29"?
Y a. 172° pgc N b. 175° pgc N c. 178° pgc N d. 181° pgc 16740: At 2245 visibility improves and Montauk Point Light bears 355°pgc. At 2314 Montauk Point Light bears 331°pgc, and at 2329 the light bears 311°pgc. Based on your 2329 running fix which statement is TRUE?
N a. You are shoreward of the 90 foot curve. N b. Your fathometer reads about 136 feet. Y c. You are being set to the left of the track. N d. You allowed too much leeway for the easterly winds. 16742: At 2352 you hear a MAYDAY call from a vessel reporting her position as 1.5 miles due east of Block Island Southeast Point Light. What is the course to steer, per gyrocompass to the distress site, if you change course at midnight and allow 1° leeway for easterly winds?
N a. 049.5°pgc N b. 052.5°pgc N c. 055.5°pgc Y d. 059.0°pgc