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.
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 326: Your 0200 position is LAT 37°23.5'N, LONG 76°09.2'W. Your speed is 8 knots, and your course is 095°T. Which statement is TRUE?
N a. The depth of the water in your vicinity is about 38 to 40 fathoms (69.1 meters to 72.7 meters). N b. The closest major aid to navigation is New Point Comfort. Y c. You are less than a mile from a sunken wreck which could interfere with your tow. N d. You will pass through a disposal area on your present course. 336: What speed have you made good from 1710 to 1810?
Y a. 6.3 knots N b. 5.5 knots N c. 4.9 knots N d. 4.2 knots 365: You sighted Trestle "A" in line at 0707 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 0707 and 0731?
N a. 9.4 knots N b. 9.2 knots Y c. 8.8 knots N d. 8.3 knots 438: You estimate that you are making 9.3 knots over the ground. At what time will you enter waters governed by the COLREGS?
N a. 0258 N b. 0255 Y c. 0251 N d. 0247 636: As you approach Dean Island Light (mile 754.8 AHP), which type of daymark will be observed at the light?
N a. Green triangle N b. Red and green banded square N c. Green square daymark Y d. Diamond-shaped green daymark 637: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
N a. 48.0 feet Y b. 53.2 feet N c. 68.2 feet N d. 116.0 feet 653: On which voyage would a great circle track be significantly shorter than a rhumb line track? (Use gnomonic tracking chart WOXZC 5274)
Y a. Savannah, GA, to Lisbon, Portugal N b. Dublin, Ireland (Irish Sea), to La Coruna, Spain (LAT 43°22'N, LONG 8°24'W) N c. Reykjavik, Iceland, to Lisbon, Portugal N d. Boston to Sable Island 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. 832: On 19 November , in DR position LAT 20°03.5'N, LONG 129°48.0'W, you take an ex-meridian observation of the planet Venus at upper transit. The chronometer time of the sight is 11h 29m 44s, and the chronometer error is 01m 23s slow. The sextant altitude (hs) is 43°54.3'. The index error is 2.0' off the arc, and your height of eye is 48 feet. What is the latitude at meridian transit?
N a. 20°08.2'N Y b. 19°58.0'N N c. 19°53.2'N N d. 19°50.6'N 845: On 16 September , your 0600 ZT fix gives you a position of LAT 29°47.2'N, LONG 65°28.4'W. Your vessel is on course 242°T and your speed is 13.5 knots. Local apparent noon (LAN) occurs at 1227 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 63°25.3'. What is the calculated latitude at LAN?
N a. 29°07.9'N N b. 29°06.1'N Y c. 29°04.7'N N d. 29°01.6'N 998: On 23 May , your 0628 zone time position was LAT 28°18.0'S, LONG 102°42.0'E. Your vessel was steaming on course 040°T at a speed of 20.0 knots. An observation of the Sun's lower limb was made at 0758 ZT. The chronometer read 01h 02m 06s and was fast 04m 04s. The observed altitude (Ho) was 13°16.7'. LAN occurred at 1201 zone time. The observed altitude (Ho) was 42°32.0'. What was the longitude of your 1201 zone time running fix?
N a. 103°57.9'E N b. 104°00.4'E Y c. 104°03.5'E N d. 104°06.3'E 1455: On 4 October , your 1907 zone time DR position is LAT 25°15.0'S, LONG 105°44.0'E. At that time, you observe Deneb bearing 011.5°psc. The chronometer reads 00h 07m 42s, and the chronometer error is 00m 36s fast. The variation is 7.5°W. What is the deviation of the standard compass?
Y a. 3.2°E N b. 4.3°W N c. 2.1°E N d. 2.1°W 1464: On 17 May , your 1554 zone time DR position is LAT 26°33.0'N, LONG 65°46.0'W. At that time, you observe the Sun bearing 269°psc. The chronometer reads 07h 55m 47s, and the chronometer error is 01m 14s fast. The variation is 3°W. What is the deviation of the standard magnetic compass?
N a. 0.6°E N b. 1.6°W N c. 4.6°W Y d. 7.6°E 1468: On 17 April , your 1516 zone time DR position is LAT 27°24.0'N, LONG 115°24.0'E. At that time, you observe the Sun bearing 247°psc. The chronometer reads 07h 16m 26s, and the chronometer error is 00m 32s slow. The variation is 4.5°E. What is the deviation of the standard compass?
N a. 4.5°W Y b. 5.4°E N c. 6.2°E N d. 6.2°W 1671: On 9 May , your vessel's 1809 ZT DR position is LAT 48°13.7'N, LONG 168°36.3'E, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 283.7° per standard magnetic compass. Variation in the area is 13.0°E. The chronometer reads 07h 13m 19s and is 02m 56s fast. What is the deviation of the standard compass?
Y a. 0.1°W N b. 1.1°W N c. 1.1°E N d. 1.9°W 1783: At 2048 ZT, on 13 October , in DR position LAT 44°02.8'S, LONG 146°58.3'E, you observe an amplitude of Venus. The planet is about one Sun's diameter above the visible horizon and bears 222.2°psc. The variation is 15°E. What is the deviation?
N a. 0.0° N b. 1.1°E Y c. 1.0°W N d. 1.5°W 1902: On 22 April , your 1852 DR position is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing 077°T at an observed altitude (Ho) of 18°58.7'. The chronometer reads 02h 54m 53s, and is 02m 51s fast. What star did you observe?
N a. Diphda N b. Betelgeuse N c. Gienah Y d. Arcturus 1964: The Platte River empties into which river?
N a. Mississippi Y b. Missouri N c. Ohio N d. Tennessee 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 2122: At 1538 ZT, on 15 October , in DR LAT position LAT 18° 12.8' S, LONG 160° 48.4' E, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 276.2°psc. Variation is 10° E. What is the deviation?
N a. 2.6°E N b. 2.6°W N c. 3.6°E Y d. 3.6°W 2153: At 0800 ZT, on 29 June , your DR position is LAT 26°00.0'N, LONG 75°29.5'W. Given a chronometer time of 01h 00m 00s, determine the computed altitude (Hc) of the Sun for the assumed position nearest to the above given latitude and longitude.
N a. Hc 34°38.6' N b. Hc 34°48.6' Y c. Hc 34°58.6' N d. Hc 35°18.6' 2456: You have steamed 520 miles at 22 knots and burning 319 barrels of fuel per day. You must decrease your consumption to 137 barrels per day with 410 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
N a. 12.8 N b. 14.8 Y c. 16.2 N d. 18.2 2662: You are on course 006°T, speed 16.6 knots. At 0516 you see a light bearing 008°T at a range of 10.2. If you change course at 0528 to leave the light abeam to port at 1.0 mile,
at what time will the light be abeam?
Y a. 0553 N b. 0556 N c. 0604 N d. 0607 2665: You are on course 079°T, speed 11.2 knots. At 0904 you see a daymark bearing 078°T at a range of 4.6. If you change course at 0910 to leave the daymark abeam to starboard at 0.5 mile, at what time will the daymark be abeam?
N a. 0918 N b. 0923 Y c. 0928 N d. 0935 2691: While on a course of 159°T, a light bears 11° on the starboard bow at a distance of 10.6 miles. What course should you steer to pass 2 miles abeam of the light leaving it to starboard?
Y a. 159°T N b. 163°T N c. 167°T N d. 171°T 3065: The propeller on your vessel has a pitch of 18'09". If the observed distance for a day's run was 399.4 miles and the average RPM was 86, which statement is TRUE?
N a. The slip is a positive 5%. N b. The day's run by engine RPM was 404.5 miles. Y c. The slip is a negative 5%. N d. The day's run by engine RPM was 390.6 miles. 3623: Your vessel is steering course 166°psc, variation for the area is 8°W, and deviation is 3°W. The wind is from the west-southwest, producing a 2° leeway. What true course are you making good?
Y a. 153°T N b. 157°T N c. 175°T N d. 179°T 3763: 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 178°T, and the variation is 9°W. If the heading of your vessel at the time of the sighting is 180° per standard magnetic compass, what is the deviation?
N a. 2°E N b. 2°W Y c. 7°E N d. 7°W 10306: You are 3 miles due east of Montauk Point Light. What is the course per standard magnetic compass to LAT 41°00.0'N, LONG 71°40.0'W?
N a. 145.5°psc Y b. 142.5°psc N c. 138.5°psc N d. 127.0°psc 10504: At 1354 your GPS indicates a position of LAT 37°00.0'N, LONG 75°45.8'W. You are on course 088° per standard magnetic compass at a speed of 9.5 knots. At 1500 your GPS indicates your position as LAT 37°01.6'N, LONG 75°31.7'W. What were the set and drift?
N a. 273°T at 0.8 knot N b. 241°T at 1.1 knots N c. 061°T at 1.3 knots Y d. 092°T at 0.9 knot 10602: At 1815 your GPS position is LAT 41°09.2'N, LONG 72°36.9'W. You are steering course 285° per standard magnetic compass at a speed of 16 knots. At 1909 you fix your position by plotting several compass bearings on nearby known fixed objects. These result in a position of LAT 41°08.5'N, LONG 72°53.7'W. What were your set and drift?
N a. 292°T at 1.8 knots N b. 243°T at 1.0 knot N c. 118°T at 1.9 knots Y d. 111°T at 2.1 knots 11502: At 1016 your GPS position is LAT 41°07.6'N, LONG 71°38.5'W. At 1104 your position is LAT 41°00.4'N, LONG 71°29.4'W. What was the speed made good between the two positions?
N a. 10.9 knots N b. 11.7 knots Y c. 12.5 knots N d. 13.6 knots 11504: At 1016 your position is LAT 41°07.6'N, LONG 71°38.5'W. At 1116 your position is LAT 41°01.4'N, LONG 71°29.4'W. What was the course made good between the two positions?
Y a. 132°T N b. 135°T N c. 140°T N d. 143°T 11701: What is the true heading to steer inbound in the York River Entrance Channel if your engines are turning for 9.5 knots, the current is 076°T at 1.2 knots, and a southwesterly wind causes 3° of leeway?
N a. 313°T N b. 308°T N c. 303°T Y d. 300°T 13010: Your 0620 position is LAT 40°59.5'N, LONG 73°00.5'W. You are making turns for 8 knots. What is your ETA at LAT 41°08.0'N, LONG 72°44.8'W?
N a. 0748 N b. 0802 Y c. 0809 N d. 0814 14402: You are underway and proceeding in an easterly direction on the Columbia River. Your vessel is positioned in the right outside quarter of McGowans Channel and is abeam of light No. 88. What should your fathometer read at this position, if the staff gauge at Portland reads + 15.0 feet?
N a. 22 feet N b. 31 feet N c. 43 feet Y d. 52 feet 14517: From your 2200 fix, you steer course 288°T to travel up the Thimble Shoal North Auxiliary Channel. If you are making good 6.0 knots, at what time would you expect to pass buoy "18" at the west end of the channel? (There are no set and drift.)
N a. 2239 N b. 2255 N c. 2315 Y d. 2344 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 15008: At 1920, the buoy forward of your starboard beam is __________.
N a. an interrupted quick flashing buoy N b. Hog Island Lighted Bell Buoy N c. South Light Buoy Y d. Sand Shoal Inlet Lighted Buoy "A" 15156: Your 1600 position is LAT 37°22.5'N, LONG 75°32.3'W. The depth of water is about __________.
N a. 38 feet (11.5 meters) N b. 45 feet (13.6 meters) Y c. 52 feet (15.8 meters) N d. 59 feet (17.3 meters) 15267: From your 1210 position, you are making good a course of 083°
T. Your engines are turning RPMs for 10 knots. The set and drift of the current are 310° at 1.7 knots. At what time should you expect to enter the red sector of New London Harbor Light?
Y a. 1243 N b. 1249 N c. 1253 N d. 1301 15407: At 1430, your position is LAT 37°12.8'N, LONG 76°17.7'W. At this time, you come left and steer 045°T. This course will lead you through a channel bordered by yellow buoys. The dashed magenta lines between the buoys mark __________.
N a. York River Entrance Channel N b. New Point Comfort shoal area N c. the piloting channel for Mobjack Bay Y d. the limits of fish trap areas 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. 15667: At 0815, you change course to 079°T. To compensate for a southerly wind, you estimate a 3° leeway is necessary. Which course should you steer per standard magnetic compass to make good 079°T?
N a. 090°psc N b. 093°psc N c. 095°psc Y d. 099°psc 15829: A stretch where the channel changes from one side of the river to the other is called a __________.
N a. passing N b. transit N c. transfer Y d. crossing 15942: At 1959 Watch Hill Point Light bears 030°T, Montauk Point Light bears 146°T, and Little Gull Light bears 283°T. What is the approximate fathometer reading?
Y a. 51 feet N b. 73 feet N c. 95 feet N d. 111 feet 16341: At 2230 you take the following visual bearings:
Montauk Point Light, Long Island 317°pgc
Southeast Point Light, Block Island 009°pgc
What is your position?
N a. LAT 40°51.2'N, LONG 71°35.9'W N b. LAT 40°51.5'N, LONG 71°36.4'W N c. LAT 40°52.2'N, LONG 71°36.6'W Y d. LAT 40°52.0'N, LONG 71°37.4'W 16545: At 0030 you alter course and speed to make good 265°T at 10 knots. What is your ETA at a point where Stratford Shoal Middle Ground Light is abeam?
N a. 0218 N b. 0223 N c. 0228 Y d. 0233 16715: From your 0600 position, what is the course per gyrocompass to leave Watch Hill Light abeam to starboard at 2.0 miles if a southerly wind is producing 3° of leeway?
Y a. 252°pgc N b. 256°pgc N c. 258°pgc N d. 262°pgc 16718: 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 100°T, at 2.8 knots, and you are turning for 12.0 knots, what course (pgc) should you steer?
N a. 250°pgc N b. 255°pgc Y c. 263°pgc N d. 267°pgc