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.
96: As you approach Kate Aubrey Towhead Light (mile 789.5 AHP), your searchlight will show what type of marking at the light?
Y a. Green diamond N b. Red and green banded square N c. Green triangle N d. Green square 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 318: From your 1915 fix you come right and steer a course of 200°T. At 2000, your position is LAT 37°05.5'N, LONG 76°07.0'W. Your intention is to pass through Chesapeake Channel. If there are no set and drift, what course would you steer per standard magnetic compass to make good a course of 145°T?
Y a. 156° N b. 151° N c. 139° N d. 134° 400: Your vessel receives a distress call from a vessel reporting her position at LAT 5°24'N, LONG 31°16'W. Your position is LAT 2°39'S, LONG 39°24'W. Determine the distance from your vessel to the vessel in distress by Mercator sailing.
N a. 669.3 miles Y b. 688.7 miles N c. 699.2 miles N d. 712.9 miles 533: You depart LAT 38°14'N, LONG 12°42'W, for LAT 38°14'N, LONG 46°09'W. What are the course and distance by parallel sailing?
N a. 090°T, 1576.5 miles N b. 090°T, 2879.0 miles Y c. 270°T, 1576.5 miles N d. 270°T, 2868.5 miles 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 736: On 6 March , your 1854 zone time DR position is LAT 23°51.5'N, LONG 73°14.0'W. At that time you observe Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is 11h 52m 40s, and the chronometer error is 01m 56s slow. The index error is 5.0' on the arc, and the height of eye is 43.5 feet (13.3 meters.) What is your latitude by Polaris?
N a. 23°29.5'N Y b. 23°36.3'N N c. 23°49.9'N N d. 24°02.9'N 755: You are taking a time tick using the 1400 signal from Buenos Aires, Argentina. You hear a 0.4 second dash followed by a series of dots, noting that the 29th and the 56th to 59th dots are omitted. At the start of the following 0.4 second dash (which is followed by an 8 second pulse), the comparing watch reads 01h 59m 57s. When compared to the chronometer, the comparing watch reads 02h 00m 38s, and the chronometer reads 02h 01m 33s. What is the chronometer error?
N a. 0m 03s slow N b. 0m 4ls slow Y c. 0m 52s fast N d. 1m 36s fast 1010: On 8 February , your 0800 zone time position is LAT 21°55'S, LONG 52°27'W. Your vessel is on course 056°T at a speed of 17.5 knots. An observation of the Sun's lower limb is made at 0938 zone time, and the observed altitude (Ho) is 46°06.5'. The chronometer reads 12h 37m 23s, and the chronometer error is 1m 24s slow. LAN occurs at 1243 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) for this sight is 83°56.1'. Determine the vessel's 1200 zone time position.
N a. LAT 20°57.0'S, LONG 51°21.5'W N b. LAT 20°58.0'S, LONG 51°25.5'W N c. LAT 21°04.0'S, LONG 51°12.0'W Y d. LAT 21°04.0'S, LONG 51°21.5'W 1145: The Memphis Gage reads 18.4 feet. The high point of your towboat is 48 feet above water. What is the vertical clearance as you pass under the Memphis Highway Bridge?
N a. 75.4 feet N b. 66.4 feet N c. 53.8 feet Y d. 46.4 feet 1214: It is 25 February and you are keeping zone time +4. You are on course 283°T, speed 22 knots. Your 0900 DR position is LAT 29°10.3'N, LONG 72°04.9'W. What is the time of the second estimate of LAN by ship's clocks?
N a. 13h 08m 56s Y b. 13h 08m 02s N c. 12h 41m 36s N d. 12h 07m 56s 1230: At 1814, on 11 September, 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. 8.7 mph N b. 7.7 mph N c. 6.3 mph N d. 5.6 mph 1243: What is the width of the widest span of the Cairo Highway Bridge (Upper Mississippi River mile 1.3)?
N a. 800 feet Y b. 675 feet N c. 625 feet N d. 503 feet 1659: On 15 July , in DR position LAT 22°19.0'N, LONG 154°37.0'W, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 298°psc. The chronometer reads 04h 45m 19s and is 01m 56s slow.
Variation in the area is 7.5°W. What is the deviation of the standard magnetic compass?
N a. 2.7°W Y b. 3.0°E N c. 3.6°W N d. 3.9°E 1673: On 17 April , your vessel's position is LAT 21°00'S, LONG 78°30'W, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 082.7° per standard magnetic compass. Variation in the area is 2.0°W. The chronometer reads 10h 59m 24s and is 01m 24s fast. What is the deviation of the compass?
Y a. 2.0°W N b. 3.0°W N c. 2.5°E N d. 3.0°E 1749: Which light characteristics does Black Hawk Light (mile 318.3 AHP) have?
N a. 1 red flash every 4 seconds N b. 1 green flash every 4 seconds Y c. 1 white flash every 4 seconds N d. 2 white flashes every 5 seconds 1775: At 1412 you increase speed to make good 10.2 mph. At 1506 you have a daymark on your port beam. Which daymark is this?
N a. Bessie Daymark Y b. Nolan Light N c. Everetts Light N d. Marr Towhead Light 1882: On 2 October , your 1845 DR position was LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the clouds at a sextant altitude (hs) of 20°45.6' T, bearing 201.5°T. The index error is 1.3' off the arc, and the height of eye is 42 feet. The chronometer reads 07h 46m 19s and is 00m 51s fast. What star did you observe?
N a. Cor Caroli N b. Muhlifain Y c. Alpha Muscae N d. Beta Corvi 2009: On 16 July , your 1920 ZT DR position is LAT 25°36.0'N, LONG 172°18.9'W. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Rasalhague, Spica, Arcturus Y b. Venus, Antares, Vega N c. Vega, Mars, Antares N d. Saturn, Acrux, Spica 2210: The low water reference plane (LWRP) for Bayou Sara is 5.25 feet. If the Bayou Sara Gage reads -0.5 feet, what is the water level in relation to the low water reference plane?
N a. 4.75 feet above the plane N b. 5.75 feet above the plane Y c. 5.75 feet below the plane N d. 4.75 feet below the plane 2243: At 1444 ZT, on 28 July , in DR position LAT 40° 56.8' N, LONG 167° 12.4' E, you observe an amplitude of the Moon. The upper limb of the Moon is on the visible horizon and bears 299.3° psc. The variation is 1° E. What is the deviation?
Y a. 3.1°W N b. 3.1°E N c. 2.1°W N d. 2.1°E 2327: After you enter Thimble Shoal Channel, you will alter course to pass between Trestle "A" and "B". Based upon your present position, passing buoy "12" to port, what is TRUE?
N a. You are required to proceed outbound in the North Auxiliary Channel to avoid ferry traffic N b. You may proceed outbound in Thimble Shoal Channel Y c. You should cross the main channel and proceed outbound in the South Auxiliary Channel N d. Water depth is 38 feet. 2332: If you are making 8.3 knots over the ground, what is your ETA at the turning point in York Spit Channel at buoy "29"?
Y a. 0521 N b. 0509 N c. 0459 N d. 0448 2425: You are taking a time tick using the 2100 signal from Callao, Peru. 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 09h 00m 07s. When compared to the chronometer, the comparing watch reads 09h 01m 12s, and the chronometer reads 08h 59m 32s. What is the chronometer error?
Y a. 1m 33s slow N b. 0m 28s slow N c. 1m 05s fast N d. 0m 07s fast 2653: You are steering 019°T, and a light is picked up dead ahead at a distance of 11.6 miles at 0216. You change course to pass the light 3 miles off abeam to port. If you are making 14 knots, what is your ETA at the position 3 miles off the light?
N a. 0258 N b. 0301 Y c. 0304 N d. 0307 2668: Your vessel is on a course of 255°T, at 14 knots. At 2116 a lighthouse is sighted dead ahead at a distance of 11 miles. You change course at this time to pass the lighthouse 3 miles abeam to port. What will be your ETA at this position off the lighthouse?
N a. 2149 Y b. 2201 N c. 2212 N d. 2228 2777: The Helena Gage reads 2.3 feet. The high point on your towboat is 26 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 76.0 feet N b. 84.2 feet N c. 89.5 feet Y d. 90.7 feet 3309: You have steamed 142 miles and consumed 15.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 472 miles?
N a. 36.5 tons Y b. 49.9 tons N c. 53.8 tons N d. 61.4 tons 3639: You desire to make good a true course of 132°. The variation is 10°W, magnetic compass deviation is 5°E, and gyrocompass error is 5°W. A northeast by east wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make the true course good?
Y a. 132°psc N b. 135°psc N c. 137°psc N d. 142°psc 10103: Your GPS position is LAT 37°01.5'N, LONG 75°31.7'W. What is the course per standard magnetic compass to Chesapeake Light?
Y a. 243° N b. 240° N c. 237° N d. 231° 11010: What is the maximum speed permitted in Clinton Harbor?
Y a. 6 mph N b. 8 mph N c. 10 mph N d. 12 mph 11105: What is the height of the tide at Great Salt Pond on Block Island at the afternoon high water (daylight savings time) on 1 July 1983?
N a. 3.9 feet N b. 3.0 feet N c. 2.4 feet Y d. 2.1 feet 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 11800: What is the course to steer between Port Jefferson Approach buoy "PJ" and New Haven Lighted Buoy "NH"? Your engine speed is 12 knots and you allow for a current of 93°T at 0.8 knot. A NW'ly wind causes 3° leeway.
Y a. 030°T N b. 034°T N c. 037°T N d. 044°T 13105: At 1048 you are in the entrance to Great Salt Pond on Block Island with buoy "5" close aboard. What is your ETA at the west gap of Point Judith Harbor of Refuge if you make good 8.3 knots?
N a. 1149 N b. 1154 N c. 1158 Y d. 1203 15041: At 0741 you are still steering a course of 206° true, with a speed of 18 knots. At this time you observe Cape Charles Lighted Bell Buoy "14" bearing 222° true and Hog Island Lighted Bell Buoy "12" bearing 015° true . What were the set and drift experienced since 0725?
Y a. 259°true at 3.2 knots N b. 049°true at 2.5 knots N c. 240° true at 1.9 knots N d. 042°true at 3.3 knots 15107: At 1752, your position is LAT 37°04.3'N, LONG 76°06.4'W. On a flood current you should expect to be set to the __________.
Y a. north northwest N b. south southwest N c. east southeast N d. east 15207: What is the maximum allowable speed of vessels underway up river from Tue Marshes Light?
N a. 6 knots N b. 8 knots N c. 10 knots Y d. 12 knots 15507: What course should you steer by your standard magnetic compass to make good a course of 280°T?
N a. 266°psc N b. 272°psc N c. 290°psc Y d. 294°psc 15517: From your 1915 position, you come left and set a course for Gardiners Point. At 1930, your position is LAT 41°12.7'N,
LONG 71°56.8'W. What type of bottom is charted at this position?
N a. Blue mud, gritty shells N b. Buried mussels, gritty shells Y c. Blue mud, gray sand N d. Bumpy muck with grainy surface 15560: In clear weather, you will lose sight of Point Judith Light at what distance? (use charted range of 20 miles as nominal range)
Y a. 14.0 nm N b. 12.6 nm N c. 10.3 nm N d. 9.2 nm 15767: Which statement describes the shore between Watch Hill Point and Point Judith?
N a. Low, rocky cliffs with heavily wooded hills inland Y b. Sandy beaches broken by rocky points N c. Sand dunes and beaches with a mud and sand bottom N d. Wooded, barren hills with isolated prominent buildings 15815: From your 0130 position, you take the following radar ranges:
Mattituck Inlet Light @ 4.6 nm
Falkner Island Light @ 10.75
What is the latitude and longitude of the fix?
N a. LAT 41°00.8'N, LONG 72°40.8'W N b. LAT 41°01.2'N, LONG 72°40.4'W N c. LAT 41°01.6'N, LONG 72°40.0'W Y d. LAT 41°02.0'N, LONG 72°39.5'W 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 15944: From your 2038 position you change course to 104°T and increase engine speed to 18 knots. If you make good this course and speed, at what time will Southwest Ledge Lighted Bell Buoy "2" bear 157°T?
N a. 2047 Y b. 2052 N c. 2056 N d. 2101 16109: You are turning for 9 knots, a westerly 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 northern leg of York Spit Channel?
N a. 191°T Y b. 194°T N c. 197°T N d. 203°T 16465: At 0600, you are entering the inbound leg of the traffic separation scheme at position LAT 36°59.2'N, LONG 75°47.6'
W. Course is 250°T. At 0605, Cape Henry Light bears 249°
T. At 0610, it bears 248°T. At 0625, it bears 247°T. Based on this, you know you are __________.
N a. meeting a current from dead ahead N b. running with a current from dead ahead Y c. being set to the north N d. being set to the south 16840: Visibility is exceptionally clear. At approximately what distance did Chesapeake Light become visible?
N a. 19.2 miles Y b. 21.0 miles N c. 22.7 miles N d. 24.0 miles