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.
110: As you pass under the Baton Rouge RR and Highway 190 bridge you receive a call from another tow upriver. What channel on the VHF should you be monitoring?
N a. 1 Y b. 13 N c. 16 N d. 67 125: As you approach Ashland Light (mile 378.1 AHP) which daymark would you see?
Y a. Red triangle N b. Red diamond N c. Green square N d. Green diamond 176: What is your 2118 position?
N a. LAT 36°56.6'N, LONG 76°01.0'W N b. LAT 36°57.0'N, LONG 76°01.5'W Y c. LAT 36°57.4'N, LONG 76°01.9'W N d. LAT 36°58.0'N, LONG 76°02.4'W 183: At 1920, the buoy off your starboard bow is __________.
Y a. Sand Shoal Inlet Lighted Buoy "A" N b. Hog Island Lighted Bell Buoy N c. South Light Buoy N d. an interrupted quick flashing buoy 211: You decide to use the 9960-Y and 9960-W rates. At 1915,
you obtain the following readings:
9960-Y-43936.0
9960-W-14653.3
What is your 1915 position?
N a. LAT 41°13.0'N, LONG 71°54.1'W N b. LAT 41°13.0'N, LONG 71°53.9'W Y c. LAT 41°13.2'N, LONG 71°53.7'W N d. LAT 41°13.4'N, LONG 71°53.4'W 222: From your 1815 position, you want to make good a course of 263°T. Your engines are turning RPM's for 12 knots. The current is 050°T at 1.9 knots. Adjusting your course for set and drift, at what time should you expect to enter the red sector of Cape Henry Light?
Y a. 1904 N b. 1859 N c. 1854 N d. 1849 226: At 2000, your position is LAT 37°04.1'N, LONG 76°05.6'W. You change course for the Eastern Shore. At 2037, Old Plantation Flats Light bears 033°pgc, and York Spit Light bears 282°pgc. The course made good from your 2000 position is __________.
N a. 020°T N b. 014°T N c. 006°T Y d. 359°T 443: 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. 193° Y b. 190° N c. 187° N d. 185° 666: You are on a voyage via position LAT 44°00'N, LONG 150°00'E to LAT 46°15'N, LONG 124°00'W. Using gnomonic chart WOXZC 5270, determine which statement is TRUE?
Y a. A composite sailing with a limiting latitude of 51°N will clear the Aleutian Islands. N b. The northern hemisphere vertex is east of the arrival position. N c. The Aleutian Islands are not a navigational hazard on the direct great circle track. N d. The final course angle lies in the northeast quadrant. 677: Which statement about a great circle track between Cape Flattery (LAT 48°30'N, LONG 125°00'W) and Guam (LAT 14°00'N, LONG 145°00'E) is TRUE? (Use gnomonic tracking chart WOXZC 5270)
N a. The entire track line is to the west of the Northern Hemisphere vertex. Y b. Military exercises being carried out within a 150 mile radius of LAT 47°10'N, LONG 137°30'W will interfere with the proposed track line. N c. Distance is measured by determining the length of a line in minutes of arc from the midpoint of the track to the point of tangency. N d. When plotted on a Mercator chart the great circle track will appear as an S curve with the curve reversing at the latitude of the point of tangency (30°N). 747: On 14 March , at 1845 ZT, you take a sextant observation of Polaris. Your DR position is LAT 29°10'N, LONG 154°30'W, and your sextant reads 29°53.5'. Your chronometer reads 04h 42m 36s, and the chronometer error is 02m 24s slow. Your height of eye is 24 feet, and the index error is 1.3' off the arc. Determine the latitude by Polaris.
N a. 29°11.7'N N b. 29°15.5'N N c. 29°18.0'N Y d. 29°21.3'N 1137: What is the length of the trip?
N a. 1195.4 miles N b. 1223.1 miles N c. 1464.8 miles Y d. 1520.1 miles 1226: What are the dimensions of the Port Allen Lock at Baton Rouge, LA?
N a. 75 feet x 1188 feet N b. 84 feet x 1180feet Y c. 84 feet x 1188 feet N d. 75 feet x 1180 feet 1249: What is the white/black within a circle symbol found at mile 592.1 AHP?
N a. Terrence Landing Light N b. Daymark Y c. River Gage N d. Information Board 1260: On 16 March , your 0330 ZT DR position is LAT 22°36.0'S, LONG 76°16.0'E. You are on course 098°T at a speed of 16 knots. What will be the ZT of sunrise at your vessel?
N a. 0545 Y b. 0553 N c. 0600 N d. 0608 1497: On 19 November , your 0146 ZT position is LAT 33°48'N, LONG 25°22'E. You observe Polaris bearing 359.8°pgc. At the time of the observation the helmsman noted that he was heading 224°pgc and 222.5°psc. The variation is 2°E. What is the deviation for that heading?
N a. 2.0°E N b. 0.5°E Y c. 1.0°W N d. 1.5°W 1536: As you approach Casting Yard Dock Lt. (mile 265.4 AHP) you notice on the map a circle with 2 black sectors. This symbol indicates a __________.
N a. lock N b. warning sign Y c. river gage N d. mooring buoy 1680: On 31 October , your 1700 zone time DR position is LAT 27°17.0'N, LONG 116°10.0'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 246.5° per standard magnetic compass. Variation in the area is 8.5°E. The chronometer reads 01h 01m 23s and the chronometer error is 01m 54s slow. What is the deviation of the standard compass?
N a. 0.8°E Y b. 0.8°W N c. 2.5°E N d. 2.5°W 1809: Which daymark would you see at Shields Bar Lt. (mile 882.2 AHP)?
N a. Red triangle N b. Green triangle Y c. Red diamond N d. Green square 1960: The low water reference plane for Greenville Highway Bridge is 11.3 feet. If the Gage at the Greenville Highway Bridge reads 22.0 feet, what is the water level in relation to the low water reference plane (LWRP)?
N a. 22.1 feet below the LWRP N b. 10.7 feet below the LWRP Y c. 10.7 feet above the LWRP N d. 0.5 feet below the LWRP 2093: At your current speed of 21 knots you only have enough fuel remaining to travel 435 miles. You must travel 755 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
Y a. 15.9 N b. 17.1 N c. 18.3 N d. 19.5 2162: On 5 April , at 0509 zone time, morning stars were observed and the vessel's position was LAT 28°32'N, LONG 177°13.0'W. Your vessel is steaming at 19.0 knots on a course of 258°T. A sextant observation of the Sun's lower limb is made at 1021 zone time. The chronometer reads 10h 20m 09s, and the sextant altitude (hs) is 58°06.6'. The index error is 1.0' off the arc, and the chronometer error is 00m 54s slow. Your height of eye on the bridge is 55.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 125.8°T N b. 128.8°T Y c. 129.2°T N d. 130.2°T 2593: At 2315, you are notified that the Port Jefferson pilot will be delayed. Old Field Point Light bears 257°T, Stratford Shoal Middle Ground Light bears 355°T and Port Jefferson East Breakwater Light bears 171°T. What is the depth under the keel at this time on December 4, 1983?
N a. 41 feet Y b. 47 feet N c. 51 feet N d. 57 feet 2872: Your vessel is on a course of 272°T at 15 knots. At 2113 a light bears 245.5°T, and at 2120 the light bears 227°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 2124, 1.3 miles Y b. 2127, 1.8 miles N c. 2131, 2.3 miles N d. 2135, 2.7 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 3051: The propeller on a vessel has a diameter of 20.6 feet and a pitch of 23.4 feet. What would be the apparent slip if the vessel cruised 538 miles in a 24 hour day (observed distance) at an average RPM of 87?
Y a. -11.6% N b. +11.6% N c. -10.3% N d. +10.3% 3107: You are turning 68 RPM, with a propeller pitch of 18 feet, and an estimated slip of +2%. What is the speed of advance?
N a. 10.7 knots N b. 11.5 knots Y c. 11.8 knots N d. 12.3 knots 3264: You have steamed 1134 miles at 10 knots, and consumed 121 tons of fuel. If you have to steam 1522 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 12 knots?
N a. 146 tons N b. 189 tons N c. 200 tons Y d. 234 tons 10301: Determine the course per standard magnetic compass from Cerberus Shoal Buoy 9 (LAT 41°10.4'N, LONG 71°57.1'W) to the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W).
N a. 030°psc N b. 036°psc Y c. 059°psc N d. 067°psc 10506: At 0919 your position is LAT 37°00.0'N, LONG 75°30.0'W. You are on course 270°T at 8.7 knots. At 1031 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the set and drift?
N a. 239° at 0.8 knot Y b. 252° at 1.3 knots N c. 060° at 0.7 knot N d. 073° 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 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 12901: Your 1152 position is LAT 37°23.9'N, LONG 76°05.5'W. You are turning for 10.3 knots. What is your ETA at Trestle C of the Chesapeake Bay Bridge and Tunnel if you follow York Spit Channel?
Y a. 1404 N b. 1349 N c. 1342 N d. 1339 14202: What is the minimum clearance for the bridge across the entrance to the Wind River at Home Valley, WA.?
N a. 14 feet Y b. 26 feet N c. 34 feet N d. 38 feet 14303: What is the height above the water of light No. 84 on the Columbia River below Bonneville lock & dam?
N a. 10 feet Y b. 14 feet N c. 18 feet N d. 24 feet 15142: At 2146 if your fathometer is set on feet, what should be the approximate reading on your fathometer?
Y a. 88 feet N b. 105 feet N c. 121 feet N d. 166 feet 15240: At 1130, Horton Point Light bears 172° true at a range of 3.45nm
The fathometer reads 81 ft. Your position is __________.
N a. north of your intended track line N b. 41°09.4'N, 72°22.6'W N c. three miles southeast of Six Mile Reef Buoy "8A" Y d. 41°08.5'N, 72°27.3'W 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 15607: If there is no current, what is the course per gyro compass from your 1600 position to point A located 0.5 mile due east of Hog Island Lighted Bell Buoy "12"?
N a. 190°pgc Y b. 193°pgc N c. 196°pgc N d. 199°pgc 15639: At 2016 you sight N. Dumpling Light in line with Latimer Reef Light (Fl 6 sec, 55 ft) bearing 079°pgc. At the time of the bearing the helmsman reported he was steering 164°
pgc and 172° per standard magnetic compass. What is the deviation for that heading?
Y a. 3°E N b. 1°E N c. 5°W N d. 2°W 15716: At 1210, you are in position LAT 41°14.3'N, LONG 72°16.5'W. What is the depth of water below your keel?
Y a. 97 feet (29.4 meters) N b. 108 feet (32.7 meters) N c. 119 feet (36.1 meters) N d. 125 feet (37.9 meters) 15859: You are turning for 9 knots on course 230°T. At 0023,
Horton Point Light bears 208°pgc. At 0053, Horton Point Light bears 126°pgc. What is the position of your 0053 running fix?
N a. LAT 41°05.7'N, LONG 72°27.6'W N b. LAT 41°05.8'N, LONG 72°28.1'W N c. LAT 41°05.9'N, LONG 72°27.4'W Y d. LAT 41°06.0'N, LONG 72°28.2'W 16015: By 0430, the wind has increased, and the visibility cleared due to passage of a front. You estimate 3° leeway due to NW'ly winds. What is the course per gyrocompass to pass 1.2 miles due south of Twenty-eight Foot Shoal Lighted Buoy "TE"?
Y a. 080° N b. 083° N c. 086° N d. 090° 16107: If the visibility is 5 miles and you are in the red sector,
at what distance off should you sight Cape Henry Light?
N a. 15 miles N b. 13 miles N c. 11 miles Y d. 09 miles 16207: If you change course at 0610, what is the course to steer to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")?
N a. 072°pgc N b. 076°pgc Y c. 080°pgc N d. 084°pgc 16208: What is your ETA at point "A"?
N a. 0640 Y b. 0651 N c. 0655 N d. 0702 16215: The wind is southerly, and you estimate 3° leeway. Allowing for leeway, what is the course to steer from your 0745 position to pass 1 mile south of Watch Hill Buoy "WH"?
N a. 079°pgc N b. 081°pgc N c. 085°pgc Y d. 087°pgc 16314: At 0820, you take the following bearings:
Branford Reef Light bearing 307° true
Falkner Island Light bearing 052° true
What are the set and drift since 0730?
N a. Set 052°T, drift 1.1 knots N b. Set 052°T, drift 1.3 knots N c. Set 236°T, drift 1.1 knot Y d. Set 236°T, drift 1.3 knots 16414: At 1110, you increase speed to 12 knots. What is your ETA at the new position?
N a. 1157 N b. 1208 Y c. 1215 N d. 1219 16508: At 0700, your gyro alarm sounds. What course should you steer by the standard magnetic compass in order to maintain your original heading of 078°T?
N a. 062°psc N b. 080°psc N c. 090°psc Y d. 095°psc 16560: From your 1800 position, you steer a course of 355°psc at a speed of 10.0 knots. At 1830, your position is LAT 41°11.7'N, LONG 71°45.8'W. What are the set and drift of the current?
Y a. 005°T, 1.0 knot N b. 005°T, 0.5 knots N c. 180°T, 0.5 knot N d. 208°T, 1.0 knots 16564: If your height of eye is 45 feet (13.7 meters), what is the approximate geographic range of Block Island North Light?
N a. 7.8 nm N b. 8.9 nm N c. 13.0 nm Y d. 16.7 nm 16618: What is the distance from your 0200 position to the point where Twenty-Eight Foot Shoal lighted buoy is abeam to starboard?
N a. 6.6 miles Y b. 6.9 miles N c. 7.1 miles N d. 7.3 miles 16643: At 0520 your position is LAT 41°07.2'N, LONG 71°41.6'W. You set course to leave Race Rock Light abeam to starboard at 0.5 mile. What is the course to steer per standard magnetic compass? (Assume no current)
N a. 301.5° N b. 305.0° Y c. 307.5° N d. 309.0°