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.
62: The Greenville Gage reads 10.6 feet. The high point of your towboat is 54 feet above water. What is the vertical clearance as you pass under the Greenville Highway Bridge?
N a. 75.4 feet Y b. 65.4 feet N c. 54.2 feet N d. 44.4 feet 67: The Gage at Red River Landing reads 22.2 feet. The LWRP for Red River is 10.6 feet. What is the water level in relation to the low water reference plane?
N a. 32.8 ft below N b. 32.8 ft above N c. 11.6 ft below Y d. 11.6 ft above 84: What is the distance from the Amoco Docks at Baton Rouge, LA, to the mouth of the Ohio River?
N a. 981.5 miles N b. 953.5 miles N c. 727.9 miles Y d. 700.2 miles 98: At 0230 on 13 August, 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 127: After entering Milliken Bend (mile 455 AHP) you wish to locate the river service in Madison Parish, Louisiana. The river service is indicated by the square containing which number?
N a. 7 N b. 6 N c. 5 Y d. 4 189: At 0645, Watch Hill Point (left tangent) bears 316.5°pgc at 2.75 miles. What was the speed made good between 0600 and 0645?
N a. 8.1 knots N b. 9.8 knots Y c. 10.3 knots N d. 11.4 knots 194: At 2100, you alter course to 250°T and reduce speed to 7 knots. You enter the traffic separation scheme on the inbound side. At 2200, your fix shows you crossing a broken purple line on the chart, and you observe North Chesapeake Entrance Lighted Gong Buoy "NCD" to port. This area is __________.
N a. an area with local magnetic disturbances N b. a pilotage area Y c. a precautionary area centered on buoy "CBJ" N d. in inland waters 208: From your 1850 fix, you come left to a course of 280°T,
while maintaining a speed of 10 knots. Which of the following combinations of available Loran-C lines would be best for position determination?
N a. 9960-X and 9960-Y Y b. 9960-Y and 9960-W N c. 9960-W and 9960-X N d. All are equally good. 334: 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?
N a. 250° N b. 261° N c. 265° Y d. 269° 362: At 0530, the Coast Guard announces that Chesapeake Channel is closed indefinitely due to a collision occurring in the channel between Trestle "B" and "C" of the Chesapeake Bay Bridge and Tunnel. You exit York Spit Channel, leaving buoy "20" abeam to port at 0.1 mile, and alter course to leave Horseshoe Crossing Lighted Bell Buoy abeam to port at 0.2 mile. What is the course per gyrocompass?
Y a. 193°pgc N b. 190°pgc N c. 187°pgc N d. 185°pgc 373: What is your ETA at point "A"?
N a. 0702 N b. 0655 Y c. 0651 N d. 0640 378: A vessel at LAT 37°24.0'N, LONG 178°15.0'W, heads for a destination at LAT 34°18.0'N, LONG 178°25.0°E. Determine the true course and distance by Mercator sailing.
N a. 041°T, 273.9 miles N b. 047°T, 273.9 miles Y c. 221°T, 247.2 miles N d. 227°T, 247.2 miles 401: Your vessel receives a distress call from a vessel reporting her position as LAT 35°01'S, LONG 18°51'W. Your position is LAT 30°18'S, LONG 21°42'W. Determine the true course from your vessel to the vessel in distress by Mercator sailing.
N a. 135°T N b. 149°T Y c. 153°T N d. 160°T 525: At 0600 you take the following bearings:
Point Judith Light bearing 063° pgc
Block Island North Reef Light bearing 144° pgc
What is your 0600 position?
Y a. LAT 41°18.3'N, LONG 71°38.7'W N b. LAT 41°18.4'N, LONG 71°38.0'W N c. LAT 41°18.5'N, LONG 72°38.1'W N d. LAT 41°18.7'N, LONG 71°38.9'W 581: At 1119, Wolf Trap Light bears 268°T at 4.4 miles by radar. What were the set and drift since your 1037 fix?
Y a. 358°, 0.7 knot N b. 358°, 0.5 knot N c. 178°, 0.7 knot N d. 178°, 0.5 knot 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 659: You are planning a voyage from LAT 48°30'N, LONG 125°00'W to Korea via LAT 48°30'N, LONG 153°00'E. Which of the following track lines would you select for the safest and most direct route? (Use gnomonic tracking chart WOXZC 5270)
N a. Parallel sailing along 48°30'N N b. Great circle track line between the two points Y c. Great circle to LAT 51°00'N, LONG 178°00'W, parallel sailing for 80 miles, then great circle to the via point N d. Rhumb line track between the two points 977: On 8 February , your 0800 zone time (ZT) position was LAT 28°55.0'S, LONG 52°27.0'W. Your vessel was steaming on course 036°T at a speed of 19.0 knots. An observation of the Sun's lower limb was made at 0938 ZT. The chronometer read 12h 37m 23s and was slow 01m 24s. The observed altitude (Ho) was 45°29.2'. Local Apparent Noon (LAN) occurred at 1240 ZT. The observed altitude (Ho) was 77°10.5'. What was the longitude of your 1200 ZT running fix?
N a. 51°29.6'W N b. 51°31.4'W N c. 51°33.1'W Y d. 51°35.4'W 1081: On 14 Sept , your 1810 ZT DR position is LAT 27°12.0'S, LONG 71°10.0'E. You are on course 060°T at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1822 running fix. NP-0011
N a. LAT 27°04.5'S, LONG 71°22.4'E N b. LAT 27°07.5'S, LONG 71°18.6'E N c. LAT 27°09.2'S, LONG 71°11.3'E Y d. LAT 27°11.0'S, LONG 71°14.5'E 1138: After you get underway, what is the first river gage you will pass?
Y a. Donaldsonville N b. Head of Passes N c. Baton Rouge N d. Red River Landing 1193: On 26 September , your 0830 zone time DR position is LAT 23°04.0'N, LONG 129°16.0'E. Your vessel is on course 119°T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)?
N a. 1158 N b. 1205 Y c. 1210 N d. 1214 1196: On 14 October your 0800 zone time (ZT) dead reckoning position is LAT 28°22.0'N, LONG 161°17.0'E. Your vessel is on course 116°T at a speed of 17.5 knots. What is the ZT of local apparent noon (LAN)?
N a. 1148 N b. 1151 Y c. 1156 N d. 1202 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 1247: At 0509, on 26 December, you pass under the Helena Highway Bridge (mile 661.7 AHP). What has been the average speed of the current since departing Memphis Harbor, McKellar Lake, if you have been making turns for 7.5 mph?
N a. 5.6 mph Y b. 4.4 mph N c. 2.1 mph N d. 1.8 mph 1248: What is the distance in river miles, from the new mouth of the White River to the Petroleum Fuel & Terminal Co. (mile 144.6 AHP)?
Y a. 454 miles N b. 427 miles N c. 384 miles N d. 370 miles 1912: On 22 February , your 1857 DR position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star bearing 108°T at an observed altitude (Ho) of 67°53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?
Y a. Adhara N b. Miaplacidus N c. Avior N d. Suhail 1953: You are downbound when you observe on your Mississippi River map a circel with black and white quadrants on the left bank. This indicates a __________.
Y a. river gage N b. daymark N c. control tower N d. information board 2025: On 10 October , your 1500 zone time DR position is LAT 27°35.6'S, LONG 44°49.0'W. You are on course 342°T at a speed of 24 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Venus, Moon, Fomalhaut N b. Venus, Arcturus, Hamal Y c. Moon, Al Na'ir, Rigil Kentaurus N d. Deneb, Spica, Markab 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 2214: Which of the following statements regarding aids to navigation shown in the Corps. of Engineers map book is TRUE?
N a. The U.S. Army Corps.. of Engineers is responsible for placing and maintaining all aids to navigation. Y b. Buoys should always be given as wide a berth in passing as possible. N c. Buoy positions as shown on the chart are exact. N d. Lights and daymarks are always shown in their exact location. 2282: You observe the lower limb of the Sun at a sextant altitude (hs) of 42°44.0' on 22 June . The index error is 0.8' off the arc. The height of eye is 70 feet (21.3 meters). What is the observed altitude (Ho)?
N a. 42°19.8' N b. 42°21.7' Y c. 42°51.7' N d. 42°54.2' 2870: Your vessel is on a course of 126°T at 17 knots. At 0251 a light bears 099.5°T, and at 0313 the light bears 081°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0327, 4.4 miles Y b. 0335, 6.2 miles N c. 0345, 6.8 miles N d. 0351, 7.4 miles 3112: While enroute from Montevideo to Walvis Bay a vessel's course is 116°psc. The variation for the locality is 25°W and the deviation is 6°W. What is the true course made good if a southerly wind produces 1° leeway?
Y a. 084°T N b. 086°T N c. 148°T N d. 085°T 3298: Your vessel consumes 216 barrels of fuel per day at a speed of 15.0 knots. What will be the fuel consumption of your vessel at 17.5 knots?
N a. 232 bbls N b. 252 bbls N c. 294 bbls Y d. 343 bbls 3455: You wish to make good a course of 230°T while turning for an engine speed of 12.5 knots. The set is 180°T, and the drift is 1.7 knots. What course should you steer?
N a. 244°T Y b. 236°T N c. 231°T N d. 222°T 3773: Which numbered box indicates the ExxonMobil Refining & Supply Co. in Baton Rouge?
Y a. 1 N b. 2 N c. 3 N d. 4 6144: What are the dimensions of the Old River Lock on the Lower Old River (mile 304 AHP)?
Y a. 1190 X 75 feet N b. 1185 X 84 feet N c. 1190 X 84 feet N d. 1185 X 75 feet 12200: You are on course 119°psc. You sight New Haven Outer Channel Range Rear Light in line with the Outer Channel Range Front Light bearing 346° per standard magnetic compass. This indicates that __________.
N a. you should swing the vessel to determine the deviation Y b. the existing deviation table is correct for that heading N c. your compass is affected by a local magnetic disturbance N d. the compass error is 16°W 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 12506: You are on course 203° per standard magnetic compass when you take the following bearings: New Point Comfort Spit Light 2 267°psc Horn Harbor Entrance Light HH 304°psc Wolf Trap Light 006°psc What is the position of the fix?
N a. LAT 37°18.9'N, LONG 76°10.4'W Y b. LAT 37°18.8'N, LONG 76°10.8'W N c. LAT 37°18.7'N, LONG 76°11.1'W N d. LAT 37°18.5'N, LONG 76°10.7'W 12701: You are on course 298° per standard magnetic compass when you take the following bearings: Block Island Southeast Point Light - 058°psc Block Island Aero Beacon - 005°psc Montauk Point Light - 268°psc What is your position?
N a. LAT 41°08.3'N, LONG 71°35.0'W Y b. LAT 41°08.2'N, LONG 71°34.4'W N c. LAT 41°08.1'N, LONG 71°33.8'W N d. LAT 41°08.0'N, LONG 71°34.1'W 13109: At 1113 you are in the entrance to Great Salt Pond on Block Island with buoy "5" close aboard. What is your ETA at light "1" at the mouth of the approaches to Lake Montauk if you make good 9.6 knots?
N a. 1310 Y b. 1301 N c. 1254 N d. 1249 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 15162: At 1920, Cape Henry Light bears 231°pgc, and Chesapeake Channel Tunnel North Light bears 294°pgc. If your heading is 268°T, what is the relative bearing of Chesapeake Light?
Y a. 213° N b. 201° N c. 194° N d. 179° 15408: From your 1430 fix, you order turns for 8 knots. You steer 045°T and experience no set and drift. At what time would you expect to have New Point Comfort Spit Light "4" abeam?
N a. 1452 Y b. 1458 N c. 1504 N d. 1510 15756: You are steering 087°pgc and turning for 6.8 knots. At 0600, you take the following bearings:
Little Gull Island Light bearing 085.5°pgc
Bartlett Reef Light bearing 043°pgc
What is your 0600 position?
Y a. LAT 41°12.1'N, LONG 72°13.8'W N b. LAT 41°12.1'N, LONG 72°14.6'W N c. LAT 41°12.3'N, LONG 72°14.7'W N d. LAT 41°12.5'N, LONG 71°14.9'W 15864: At 0200, you take the following bearingss:
Mattituck Inlet Light bearing 125°pgc
Falkner Island Light bearing 355°pgc
What is the position of your 0200 fix?
Y a. LAT 41°03.9'N, LONG 72°38.9'W N b. LAT 41°03.8'N, LONG 72°39.1'W N c. LAT 41°03.7'N, LONG 72°38.5'W N d. LAT 41°03.5'N, LONG 72°38.8'W 16065: If you steer 143°pgc at an engine speed of 8.0 knots from your 2015 position, at what time would you reach a point midway between buoys "11" and "12" (ignore set and drift)?
N a. 2020 Y b. 2029 N c. 2032 N d. 2039 16112: At 0530, the Coast Guard announces that Chesapeake Channel is closed indefinitely due to a collision occurring in the channel between Trestle "B" and "C" of the Chesapeake Bay Bridge and Tunnel. You exit York Spit Channel, leaving buoy "20" abeam to port at 0.1 mile, and alter course to leave Horseshoe Crossing Lighted Bell Buoy abeam to port at 0.2 mile. What is the course per gyrocompass?
N a. 185°pgc N b. 187°pgc N c. 190°pgc Y d. 193°pgc 16569: The short-long dashed magenta line around Gardiners Island marks __________.
N a. a regulated anchorage Y b. fish trap areas N c. an area closed to the public N d. underwater cables 16709: The coastline between Point Judith and Watch Hill is __________.
N a. steep with rocky bluffs N b. low and marshy Y c. sandy and broken by rocky points N d. heavily forested