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.
203: At 1800, your position is LAT 41°06.5'N, LONG 71°43.5'W. How would the buoy which bears 030°T from your position at a range of approximately 0.5 mile be painted?
N a. Horizontally banded, red over green Y b. Horizontally banded, green over red N c. Vertically striped, red and green N d. Solid green with red letters "BIS" 264: At 0720, you are in the outer channel between buoy "1" and buoy "2" and change course to pass Townshend Ledge Lighted Bell Buoy "10A" abeam to port at 200 yards. What is your ETA off the buoy?
N a. 0745 N b. 0741 Y c. 0738 N d. 0734 277: What chart should you use after you enter New London Harbor?
N a. 13211 N b. 13214 Y c. 13213 N d. 13272 289: At 1930, you take a fix using the following radar ranges:
York Spit Light - 3.6 miles;
New Point Comfort Spit Light "2" - 2.0 miles;
York Spit Swash Channel Light "3" - 2.5 miles.
Your longitude is __________.
N a. 76°16.2'W N b. 76°16.5'W Y c. 76°16.8'W N d. 76°17.2'W 299: At 1930, your vessel is between York River Entrance Channel Lighted Buoys "1YR" and "2". From this position, you change course to 142°pgc at an engine speed of 8.0 knots. At 2001, you obtain the following information:
Chesapeake Channel Tunnel North Light - 131°pgc; Thimble Shoal Light - 248°pgc
What were the set and drift between 1930 and 2001?
Y a. 127° at 0.5 knot N b. 127° at 1.1 knot N c. 307° at 1.1 knot N d. 307° at 0.5 knot 405: You depart LAT 33°45.0'N, LONG 118°30.0'W, and steam 2216 miles on course 250°T. What is the longitude of your arrival by Mercator sailing?
N a. LONG 156°08.0'W N b. LONG 156°36.0'W N c. LONG 157°21.0'W Y d. LONG 157°31.0'W 474: You are on a great circle track departing from LAT 25°50.0'N, LONG 77°00.0'W and your initial course is 061.7°T. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W.
What is the distance along the great circle track between the point of departure and the vertex?
N a. 2735.1 miles Y b. 2664.9 miles N c. 2583.2 miles N d. 2420.0 miles 490: At 0728, you change course to 080°T. When steady on course, the standard magnetic compass reads 097°. Which statement is TRUE?
Y a. The magnetic compass error is 17°W. N b. The magnetic heading is 090°. N c. The deviation is 1.0°E. N d. The gyro course is 083°pgc. 513: What is the distance from your 0200 position to the point where Twenty-Eight Foot Shoal lighted buoy is abeam to starboard?
N a. 7.3 miles N b. 7.1 miles Y c. 6.9 miles N d. 6.6 miles 671: You are on a voyage from Nome to Honolulu via Unimak Pass (LAT 54°30'N, LONG 164°30'W). The great circle track passes through a point at LAT 38°00'N, LONG 161°40'W. Using gnomonic chart WOXZC5270, determine which answer is TRUE. (The great circle distance, Unimak Pass to Honolulu, is 2013 miles.)
N a. A great circle track results in a significant savings in distance when compared to a rhumb line. N b. The northern vertex of the great circle track would lie between Unimak Pass and Nome. N c. Distance of the great circle track is measured by using the length of degree of latitude at the mid-latitude of the track. Y d. A great circle course would offer no significant advantage because the rhumb line course is close to 180°. 809: On 7 November , your 0830 zone time fix gives you a position of LAT 27°36.0'N, LONG 163°19.0'W. Your vessel is on course 289°T, and your speed is 19.0 knots. Local apparent noon (LAN) occurs at 1138 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 45°35.0'. What is the calculated latitude at LAN?
N a. 27°52.3'N N b. 27°53.4'N N c. 27°55.1'N Y d. 27°57.2'N 1092: On 3 April , your vessel's 1400 ZT DR position is LAT 20°08.0'N, LONG 147°45.0'W. You are steering course 023°T at 18.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1900 running fix. NP-0022
N a. LAT 21°39.8'N, LONG 146°59.7'W Y b. LAT 21°40.0'N, LONG 147°03.2'W N c. LAT 21°41.8'N, LONG 147°05.5'W N d. LAT 21°41.8'N, LONG 147°01.5'W 1104: On 19 November , your 0200 zone time DR position is LAT 20°29.0'N, LONG 150°21.3'E. You are on course 136°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0033
N a. LAT 19°30.1'N, LONG 151°06.0'E N b. LAT 19°31.7'N, LONG 151°04.9'E Y c. LAT 19°33.0'N, LONG 151°10.0'E N d. LAT 19°35.8'N, LONG 151°13.6'E 1150: 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?
Y a. 53.2 feet N b. 58.1 feet N c. 68.2 feet N d. 96.3 feet 1294: What are the light characteristics of Greenwood Light (mile 288.6 AHP)?
N a. Fixed red light Y b. 2 red flashes every 5 seconds N c. 1 red flash every 4 seconds N d. 2 white flashes every 4 seconds 1426: What is the total length of the trip?
N a. 910.6 miles N b. 901.4 miles N c. 900.7 miles Y d. 873.7 miles 1544: What is the distance in river miles, from the new mouth of the White River to the Petroleum Fuel & Terminal Co.(144.6 AHP)?
N a. 370 miles N b. 384 miles N c. 437 miles Y d. 454 miles 1731: What is the total length of the trip?
N a. 910.6 miles Y b. 901.2 miles N c. 900.3 miles N d. 873.7 miles 1802: You are turning for 10 mph and passing Hog Point ,LA. Angola reports that the current at Red River Landing is 4.5 mph. Which statement is TRUE?
N a. The main channel lies on the north side of the island you see ahead. N b. You are making 14.5 mph over the ground. N c. You would expect to find the more favorable current near the broken red line in the river. Y d. You should expect to encounter vessels crossing the river at mile 300.5 AHP. 1876: On 2 October , your 1845 DR position is 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 11°37.6' bearing 066°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 0m 51s fast. What star did you observe?
N a. Scheat N b. Ruckbah N c. Caph Y d. Algenib 1905: On 22 March , your 0519 DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 200°T at an observed altitude (Ho) of 33°05.5'. The chronometer reads 10h 16m 47s, and is 02m 15s slow. What star did you observe?
N a. Acamar N b. Enif Y c. Antares N d. Rigel 2126: At 2350 on 23 June, you are at mile 610.5 AHP when you see about a mile ahead lights on the water near the left bank. What might you see when you come abreast of these lights?
N a. Privately maintained buoys at a yacht club N b. Government buoys marking the Hurricane Point dikes Y c. Barges moored at the Dennis Landing Terminal N d. A pipeline discharging dredge spoil 2247: At 1845 zone time, on 17 March , while taking stars for an evening fix, you observe an unidentified star bearing 200°T at an observed altitude of 53°45.0'. Your DR position at the time of the sight is LAT 25°10.0'N, LONG 66°48.0'W. The chronometer time of the sight is 10h 47m 49s, and the chronometer error is 1m 54s fast. Your vessel is steaming on a course of 290°T at a speed of 18.0 knots. What star did you observe?
N a. Altair N b. Mirfak N c. Pollux Y d. Rigel 2402: You will enter waters governed by the International Rules when __________.
N a. you cross the territorial sea boundary line N b. enter the pilotage area N c. you cross the boundary of the contiguous zone Y d. Cape Henry Light bears 202°T 2659: You are steering 115°T, and a light is picked up dead ahead at a distance of 16.7 miles at 0522. You change course to pass the light 3.5 miles off abeam to port. If you are making 12 knots, what is your ETA at the position 3.5 miles off the light?
Y a. 0644 N b. 0647 N c. 0650 N d. 0653 3061: The propeller on a vessel has a diameter of 20.2 feet and a pitch of 19.0 feet. What would be the apparent slip if the vessel cruised 367 miles in a 24 hour day (observed distance) at an average RPM of 84?
Y a. +2.9% N b. -2.9% N c. +5.2% N d. -5.2% 3064: The propeller of a vessel has a pitch of 19.0 feet. If the vessel traveled 183.5 miles (observed distance) in 24 hours at an average of 44 RPM, what was the slip?
Y a. +7.4% N b. -7.4% N c. +11.6% N d. -11.6% 3254: You have steamed 746 miles at 14.0 knots, and consumed 152 tons of fuel. If you have 201 tons of usable fuel remaining, how far can you steam at 10 knots?
N a. 1381 miles Y b. 1934 miles N c. 2263 miles N d. 2707 miles 3256: You have steamed 918 miles at 15.0 knots, and consumed 183 tons of fuel. If you have 200 tons of usable fuel remaining, how far can you steam at 12 knots?
N a. 1021 miles N b. 1261 miles Y c. 1568 miles N d. 1960 miles 3461: You wish to make good a course of 053°T while turning for an engine speed of 16 knots. The set is 345°T, and the drift is 2.4 knots. What speed will you make good along the track line?
N a. 14.1 knots N b. 15.2 knots N c. 16.1 knots Y d. 16.8 knots 10104: Your GPS position is LAT 36°55.2'N, LONG 75°33.1'W. What is the course per standard magnetic compass to Rudee Inlet (LAT 36°49.8'N, LONG 75°58.0'W)?
N a. 246.0°psc N b. 254.5°psc N c. 261.0°psc Y d. 265.5°psc 10509: At 0919 your position is LAT 37°00.0'N, LONG 75°30.0'W. You are on course 270°T at 7.8 knots. At 1035 your position is LAT 37°00.5'N, LONG 75°43.8'W. What was the set and driftt?
N a. 281° at 0.7 knot Y b. 292° at 1.0 knot N c. 305° at 1.3 knots N d. 113° at 1.2 knots 10609: At 1922 your GPS position is LAT 41°04.9'N, LONG 72°42.1'W. You are on course 085° per standard magnetic compass at a speed of 10 knots. At 2019 your GPS position is 1 mile due south of Twenty-Eight Foot Shoal Lighted Buoy "TE". What were your set and drift?
Y a. 343°T at 0.7 knot N b. 340°T at 1.2 knots N c. 164°T at 0.9 knot N d. 161°T at 1.1 knots 11103: Point Judith Harbor of Refuge (LAT 41°22'N, LONG 71°30'W) __________.
N a. is used only by tows N b. has moorings for small craft along the breakwater N c. is easily entered in all sea conditions Y d. is entered through either the East Gap or the West Gap 12907: At 0914 you are in Chesapeake Channel between Trestle B and Trestle C of the Chesapeake Bay Bridge and Tunnel. What is your ETA at North Chesapeake Entrance Buoy NCA if you are making good 10.9 knots (Use the buoyed channel and appropriate sea lane)?
Y a. 1038 N b. 1044 N c. 1049 N d. 1055 13809: Which chart, of the same scale, continues eastward from this chart?
Y a. 13205 N b. 13212 N c. 13214 N d. 13216 15026: The highest point on your towboat is 53 feet above the water, and the Helena Gage (mile 663 AHP) reads 6.7 feet. What is the vertical clearance when you pass under the Helena Highway Bridge in Helena?
Y a. 59.9 feet N b. 62.5 feet N c. 64.1 feet N d. 65.5 feet 15042: From your 0741 position, you wish to change course in order to pass 2.2 miles easterly of Cape Charles Lighted Bell Buoy "14". Your engine speed is now 14.0 knots. You estimate the current to be 240° true at 1.8 knots. What is the true course to steer to make good the desired course?
N a. 179°true N b. 185°true Y c. 190° true N d. 197°true 15230: What is the distance from Cairo Point, IL, to Arkansas City?
N a. 28 miles N b. 110 miles N c. 292 miles Y d. 400 miles 15314: Your gyro and electronic gear are again operating. At 1710, Chesapeake Light bears 137°pgc at 6.6 miles. The current is setting 160°T at 2 knots. At your speed of 6 knots, what is your true course to steer to remain in the inbound traffic lane?
Y a. 269° N b. 265° N c. 261° N d. 250° 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 15627: What is the vertical clearance of the Natchez Highway Bridge (westbound) when the river level is the same as the Low Water Reference Plane (6.1 ft)?
N a. 102.2 ft N b. 108.3 ft Y c. 119.4 ft N d. 125.6 ft 15729: If the Rosedale Gage reads -0.5 feet, what is the water level if the low water reference plane for Rosedale is 3.0 feet?
N a. 0.5 foot below the plane N b. 0.5 foot above the plane N c. 2.5 feet above the plane Y d. 3.5 feet below the plane 15739: Your 1900 position is LAT 40°45.5'N, LONG 72°03.0'W. Your course is 046°T, and your engines are turning RPM's for 9 knots. At your 1939 DR position, what is the expected relative bearing of Montauk Point Light on the port bow?
N a. 024° relative Y b. 028° relative N c. 032° relative N d. 036° relative 15912: If there is no current, what is the course per standard magnetic compass from your 0802 fix to the position 1.1 miles north of Falkner Island Light?
N a. 064° N b. 068° Y c. 095° N d. 099° 15913: At 0830, you wish to get the latest weather forecasts for the Falkner Island area. On what frequency would you set your FM radio for this information?
N a. 2181 kHz N b. 156.65 Mhz N c. 156.80 Mhz Y d. 162.40 Mhz 16039: From your 0820 position you change course to your rendezvous position, one mile due south of buoy "NH", speed 14.5 knots. You estimate the current to be 260°T at 0.5 knot. The wind is northwesterly at 20 knots and you estimate 2° leeway. What is your course per gyrocompass (pgc) to the rendezvous position, if you correct your heading for current and leeway?
N a. 039° N b. 041° N c. 043° Y d. 045° 16068: From your 2118 position, you proceed to Norfolk, VA, a distance of approximately 26.0 miles. To arrive at Norfolk by 0200 the next day, what is the minimum speed to make good from your 2118 position to arrive at this time?
N a. 5.0 knots N b. 5.3 knots N c. 5.8 knots Y d. 5.5 knots 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 16542: At 2308 your position is LAT 41°12.7'N, LONG 72°22.8'W.
You steer a course to make good 255°T from this position. At 2310 you receive a distress call from a vessel anchored 2.1 miles due north of Mattituck Inlet Light. If you change course at 2314, what is the course to steer per gyrocompass to arrive at the distress site if you allow 2°
leeway for northerly winds, 3°E gyro error and correct your course for a current of 073°T at 1.3 knots?
N a. 208°pgc N b. 212°pgc N c. 216°pgc Y d. 220°pgc 16544: At 2347 you are advised that your assistance is no longer needed. At 2350 you change course to make good 268°T. At 0015 you take the following round of bearings:
Kelsey Point Breakwater light 024°pgc
Horton Point Light 100°pgc
Falkner Island Light 333°pgc
At 0030 Falkner Island Lt. bears 000°T at 5.9 miles.
What is the course and speed made good between 0015 and 0030?
N a. CMG 262°T, SMG 10.4 knots N b. CMG 268°T, SMG 10.8 knots N c. CMG 268°T, SMG 10.4 knots Y d. CMG 272°T, SMG 10.8 knots 16563: From your 1850 fix, you come left to a course of 280°T,
while maintaining a speed of 10 knots. Which combination of available Loran-C lines would be best for position determination?
Y a. 9960-Y and 9960-W N b. 9960-X and 9960-Y N c. 9960-W and 9960-X N d. All 3 combinations are equal. 16612: At 0112, what is the approximate depth under the keel?
Y a. 38 feet (11.5 meters) N b. 47 feet (14.2 meters) N c. 51 feet (15.5 meters) N d. 57 feet (17.3 meters) 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.