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.
66: At 2126, you pass Morganza Bend Light (mile 278.4 AHP). At 0122, 4 January, you pass Red River Landing Gage (302.4 AHP). You have been turning for 7.5 mph. What is the current?
N a. 6.2 mph N b. 2.7 mph N c. 1.8 mph Y d. 1.4 mph 80: The Helena Gage reads 9.4 feet. The high point on your towboat is 46 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 106.1 feet N b. 79.5 feet Y c. 64.2 feet N d. 56.0 feet 196: What course per standard magnetic compass is (psc) the same as 247°pgc?
Y a. 257°psc N b. 260°psc N c. 262°psc N d. 265°psc 253: According to the DR track line from your 0100 position, how far off Roanoke Point Shoal Buoy "5" should you be when the buoy is abeam?
N a. 1.8 mile N b. 1.3 mile Y c. 0.8 mile N d. 0.2 miles 266: From your 0740 position, you change course to pass 1.1 miles north of Falkner Island Light. What loran reading will ensure that you will remain clear of the 18' shoal located 1 mile NW of Falkner Island Light?
Y a. 9960 Y: not less than 44014 N b. 9960 X: not more than 26452 N c. 9960 W: not less than 14942 N d. None of the above 309: A vessel at LAT 14°10'N, LONG 61°00'W is to proceed to LAT 10°00'N, LONG 53°23'W. What is the course and distance by mid-latitude sailing?
N a. 117.3°T, 503.0 miles N b. 117.9°T, 504.0 miles N c. 118.6°T, 508.0 miles Y d. 119.2°T, 512.0 miles 333: From your noon position, if there is no set and drift, what is your course per standard magnetic compass to the "NCA" (LL #375) buoy?
N a. 221°psc N b. 219°psc Y c. 217°psc N d. 215°psc 808: On 28 July , your 0800 zone time fix gives you a position of LAT 25°16.0'N, LONG 71°19.0'W. Your vessel is on course 026°T, and your speed is 17.5 knots. Local apparent noon (LAN) occurs at 1149 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 82°28.7'. What is the calculated latitude at LAN?
N a. 26°21.9'N N b. 26°23.4'N Y c. 26°25.0'N N d. 26°27.7'N 976: On 7 November , your 0830 zone time position was LAT 27°36.0'N, LONG 162°19.0'W. Your vessel was steaming on course 289°T at a speed of 19.0 knots. An observation of the Sun's lower limb was made at 0945 ZT. The chronometer read 08h 43m 11s and was slow 01m 51s. The observed altitude (Ho) was 38°21.1'. Local Apparent Noon (LAN) occurred at 1138 zone time. The observed altitude (Ho) was 45°35.0'. What was the longitude of your 1200 zone time running fix?
Y a. 163°38.8'W N b. 163°34.0'W N c. 163°30.2'W N d. 163°26.0'W 1090: At 0450 zone time, on 25 June , your DR position is LAT 21°26.0'N, LONG 160°24.5'W. You are steering course 100°T at a speed of 10 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0514 running fix. NP-0020
N a. LAT 21°27.0'N, LONG 160°17.0'W Y b. LAT 21°25.0'N, LONG 160°18.0'W N c. LAT 21°22.0'N, LONG 160°17.0'W N d. LAT 21°20.0'N, LONG 160°15.5'W 1132: Which light will you be passing at 0059, on 22 September, if you make good 9.2 knots?
Y a. Obion Bar Lt. N b. Kate Aubrey Lt. N c. Trotter Lt. N d. Quaker Oats Lt. 1139: You are passing the Bayou Sara Gage which reads 3.9 feet. The low water reference plane for Bayo Sara is 5.25 feet. Which of the following statements is TRUE?
N a. The river level is above the Low Water Reference Plane. N b. Red Store Landing Revetment is ahead on your starboard side N c. This gage reading is at a lower elevation than the same reading on the Gage at Head of Passes. Y d. None of the above. 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 1420: What company does NOT have a marine facility along the river bank in Helena (mile 661 to 665 AHP)?
N a. Helena Port Terminal, Inc. Y b. Riceland Food Corps.. N c. Quincy Soybean Co. N d. Texas Eastern Pipeline Co. 1502: On May 20 , you are keeping ZD +4, and your 2300 (ZD +4) DR position is LAT 42°07'N, LONG 81°02'W. At that time, you observe Polaris bearing 012°psc. The chronometer time of the observation is 03h 02m 23s, and the chronometer is 1m 17s fast. The variation is 9.5°W. What is the deviation of the magnetic compass?
Y a. 2.7°W N b. 12.2°W N c. 6.8°E N d. 12.2°E 1669: On 19 June , your vessel's 0523 ZT DR position is LAT 25°12.0'N, LONG 123°14.0'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 052.0° per standard compass. Variation in the area is 15°E. The chronometer reads 01h 21m 58s and is 01m 18s slow. What is the deviation of the standard compass?
N a. 1.4°E N b. 1.4°W N c. 1.7°W Y d. 3.3°W 1679: On 13 October , your vessel's 1722 zone time DR position is LAT 27°36'S, LONG 136°16'E, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 266° per standard magnetic compass. Variation in the area is 2°W. The chronometer reads 08h 24m 19s and is 01m 43s fast. What is the deviation of the standard magnetic compass?
N a. 2.3°E Y b. 2.8°W N c. 4.8°E N d. 6.8°W 1706: The highest point on your towboat is 53 feet above the water, and the Helena Gage (mile 663 AHP) reads 3.9 feet. What is the vertical clearance when you pass under the B-span of the Helena Highway Bridge in Helena?
N a. 59.9 feet Y b. 62.5 feet N c. 64.1 feet N d. 65.5 feet 1733: What are the dimensions of the channel maintained at Baton Rouge, LA?
N a. 30 feet x 300 feet N b. 40 feet x 300 feet Y c. 45 feet x 500 feet N d. 30 feet x 500 feet 1779: At 2237 ZT, on 14 July , in DR position LAT 33°57'N, LONG 150°32'W you observe an amplitude of Saturn. The planet is about one Sun's diameter above the visible horizon and bears 258.6°psc. The variation is 14°E. What is the deviation?
Y a. 2.0°W N b. 1.0°W N c. 0.0° N d. 1.0°E 1810: You are turning for 9 mph, approaching Fort Adams Lt. (mile 311.4 AHP) and it is reported that the current at Knox Landing is estimated at 4.5 MPH. Which of the following statements is TRUE?
Y a. Tows and other vessels should navigate as close to the left descending bank as safety will permit. N b. The inflow channel is a navigable channel for any vessel. N c. You are making 13.5 mph over the ground. N d. Old River Control Structure Light and Fort Adams Light may be used as range lights when entering the outflow channel. 1859: On 22 March , your 0519 ZT DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 094°T, at an observed altitude (Ho) of 30°15.0'. The chronometer reads 10h 16m 47s and is 02m 15s slow. What star did you observe?
N a. Acamar Y b. Enif N c. Menkar N d. Rigel 1895: On 22 June , your 0424 DR position is LAT 26°18.5'N, LONG 124°18.2'W. You observe an unidentified star bearing 195°T at an observed altitude (Ho) of 03°30.7'. The chronometer reads 00h 23m 24s, and is 01m 32s slow. What star did you observe?
Y a. Peacock N b. Schedar N c. Ankaa N d. Alioth 2090: At your current speed of 17 knots you only have enough fuel remaining to travel 316 miles. You must travel 622 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
Y a. 12.1 N b. 13.3 N c. 14.5 N d. 15.7 2106: At 0005, on 26 January, your position is LAT 41°11.8'N,
LONG 72°20.5'W. From this position, you plot a course to steer to a point one half mile north of Mattituck Breakwater Light "MI" with an engine speed of 9.0 knots. If there are no set and drift, what course should you steer?
N a. 207°psc N b. 213°psc N c. 220°psc Y d. 235°psc 2203: You have orders to drop off the empties at the fleeting area at Cairo Point and add five loaded tank barges to your tow. If you are turning for 9 mph and estimate the current at 1.5 mph, what is your ETA at Cairo?
N a. 2210, 22 June N b. 1741, 22 June Y c. 1423, 22 June N d. 1031, 22 June 2244: At 1435 ZT, on 27 April , in DR position LAT 51° 56.8' N, LONG 150° 37.7' E, the Moon’s upper limb is observed on the visible horizon, bearing 242.2° psc. Variation is 2° W. What is the deviation?
Y a. 2.2°W N b. 2.2°E N c. 6.2°E N d. 6.2°W 2324: At 1547 ZT, on 22 May , in DR position LAT 45° 12.8' N, LONG 028° 15.4' W, the Moon’s upper limb is observed on the visible horizon, bearing 120.0° psc. Variation is 2° W. What is the deviation?
N a. 1.4°W Y b. 2.6°E N c. 1.4°E N d. 2.6°W 2351: 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 2586: At 2100 Branford Reef Light bears 347°psc and Falkner Island Light bears 059°psc. You also get a radar range of 5.3 miles from Branford Reef Light. What are your LORAN readings?
N a. 14994.0, 26473.0, 43982.0 N b. 14994.5, 26482.0, 43982.0 Y c. 14996.0, 26477.5, 43981.0 N d. 14997.5, 26479.5, 43981.0 2677: You sight a light 9° on your starboard bow at a distance of 21 miles. Assuming you make good your course, what will be your distance off the light when abeam?
Y a. 3.3 miles N b. 3.7 miles N c. 4.0 miles N d. 4.3 miles 3085: You must average 16.25 knots to reach port at a designated time. Your propeller has a pitch of 21'08", and you estimate 4% negative slip. How many RPM's must you average to arrive on time?
Y a. 73 RPM N b. 77 RPM N c. 82 RPM N d. 88 RPM 3453: You wish to make good a course of 350°T while turning for an engine speed of 10 knots. The set is 070°T, and the drift is 1.5 knots. What course should you steer?
N a. 332°T Y b. 341°T N c. 345°T N d. 359°T 3467: You are underway on course 160°T at 10 knots. The current is 210°T at 0.9 knots. What is the speed being made good?
Y a. 10.7 knots N b. 11.0 knots N c. 11.6 knots N d. 12.3 knots 3626: Your vessel is steering course 284°psc, variation for the area is 6°W, and deviation is 3°E. The wind is from the north-northeast, producing a 3° leeway. What true course are you making good?
N a. 275°T Y b. 278°T N c. 284°T N d. 290°T 10905: You wish to anchor and fish in the regulated navigation area in the vicinity of LAT 37°02'N, LONG 76°01'W. Which of the following statements is TRUE?
N a. Anchoring is prohibited in this area due to the danger of unexploded mines on the bottom. N b. You may anchor in this area only in the event of an emergency such as loss of main propulsion. Y c. You may anchor in this area if your vessel is less than 65 feet in length or if you have the Captain of the Port's permission. N d. Any vessel can anchor without restriction as the regulations only apply to vessels underway. 11702: You are eastbound in the Thimble Shoal Channel. What is the true heading to steer if the engines are turning for 9.5 knots, the current is 110°T at 1.2 knots, and a southerly wind causes 3° of leeway?
Y a. 111° N b. 108° N c. 105° N d. 100° 11904: What is the true course to steer between the entrance to Winnapaug Pond (LAT 41°19.6'N, LONG 71°45.8'W) and the entrance to Lake Montauk (LAT 41°04.8'N, LONG 71°56.3'W), if you are turning for 6.5 knots, allow for a current of 295°T at 0.9 knot, and an easterly wind is causing 4° of leeway?
Y a. 196°T N b. 200°T N c. 213°T N d. 217°T 15014: If you make good 12 knots, what is the ETA at North Chesapeake Channel Entrance Buoy "NCA" (LL #375)?
N a. 2116 Y b. 2111 N c. 2106 N d. 2101 15209: At 1800, Tue Marshes Light bears 264.5°pgc, York Spit Swash Channel Light "3" bears 007°pgc. Your position is __________.
N a. LAT 37°15.5'N, LONG 76°19.8'W N b. LAT 37°15.2'N, LONG 76°20.3'W N c. LAT 37°15.0'N, LONG 76°20.0'W Y d. LAT 37°14.5'N, LONG 76°20.1'W 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 15258: Which structure should you look for while trying to locate Stratford Point Light?
Y a. White conical tower with a brown band midway of height N b. White octagonal house on a cylindrical pier N c. Conical tower, upper half white, lower half brown N d. Black skeleton tower on a granite dwelling 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 15356: You are on course 092°T, and the engines are turning for 8 knots. At 0452, you take the following bearings:
Stratford Point Light 020°pgc
Stratford Shoal (Middle Ground) Light 141°pgc
What is your 0452 position?
N a. LAT 41°05.4'N, LONG 73°07.7'W Y b. LAT 41°05.2'N, LONG 73°07.8'W N c. LAT 41°05.2'N, LONG 73°07.5'W N d. LAT 41°05.1'N, LONG 73°07.7'W 15611: 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?
N a. 1849 N b. 1854 N c. 1859 Y d. 1904 16045: The north shore of Long Island, from Horton Point to Orient Point,
is __________.
Y a. bluff and rocky N b. low and sparsely wooded N c. marked by long sandy beaches at low water N d. marshy and backed with sand dunes 16366: From your 0600 fix, you change course to 250°T. At 0605,
Cape Henry Light bears 250°T. At 0615, it bears 251°T. At 0625, it bears 252°T. Based on this you know you are __________.
Y a. being set to the south N b. being set to the north N c. meeting a current from dead ahead N d. running with a current from dead astern 16518: At 0845, Montauk Pt. Light is bearing 205°T at a radar distance of 6.6 miles. What is your speed made good from your 0815 position?
Y a. 8.2knots N b. 9.2 knots N c. 10.0 knots N d. 10.5 knots 16609: What was the speed made good between 2114 and 2142?
N a. 12.3 knots N b. 12.0 knots N c. 11.7 knots Y d. 11.4 knots 16738: At 2212 your position is LAT 40° 51'N, LONG 71° 53.5'W.
What is the course to steer, per gyrocompass from your 2212 position, to leave Montauk Point Buoy "MP" abeam to port at 1 mile if easterly winds are causing 3° of leeway?
N a. 027° pgc N b. 030° pgc N c. 032° pgc Y d. 035° pgc