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.
86: As you approach Shreves cut-off you see Red River Landing Gage (mile 302.4 AHP) which reads 6.2 feet. Which of the following statements is TRUE?
N a. This reading is 6.2 feet above the Low Water Reference Plane. Y b. This reading is at the same elevation as the 6.2 ft. mark on the Gage at Head of Passes. N c. The depth of water at Red River Landing is 6.2 ft. N d. A vessel drawing 7 ft. would be able to pass through the locks at Lower Old River. 260: At 0300, your position is LAT 41°01.7'N, LONG 72°55.1'W. From this position you steer a course of 289° per standard magnetic compass at an engine speed of 10.0 knots. At what time can you first expect to see Stratford Shoal Middle Ground Light if the luminous range is 8.0 miles?
N a. 0318 N b. 0312 N c. 0309 Y d. 0303 380: A vessel at LAT 21°18.5'N, LONG 157°52.2'W, heads for a destination at LAT 8°53.0'N, LONG 79°31.0'W. Determine the true course and distance by Mercator sailing.
N a. 081°T, 4617.5 miles N b. 081°T, 4915.8 miles Y c. 099°T, 4617.5 miles N d. 099°T, 4915.8 miles 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 436: At 0227, you take the following radar ranges and bearings: Bartlett Reef Light 359°T at 2.4 miles, Race Rock Light 083°T at 4.1 miles. What is your 0227 position?
N a. LAT 41°14.5'N, LONG 72°08.0'W Y b. LAT 41°14.1'N, LONG 72°08.2'W N c. LAT 41°14.0'N, LONG 72°08.5'W N d. LAT 41°14.3'N, LONG 72°08.5'W 477: The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 12°36.0'N, LONG 128°16.0'E is 8664 miles, and the initial course is 306.6°T. Determine the latitude of the vertex.
Y a. 37°30.2'N N b. 37°39.6'N N c. 37°48.2'N N d. 37°53.6'N 618: Your vessel departs Seattle at 1010 zone time (ZD +8), on 28 May, bound for Apra, Guam (ZD -10). The distance by great circle is 4,948 miles, and you estimate that you will average 18.5 knots. What is your estimated zone time of arrival?
Y a. 0737, 9 June N b. 1737, 9 June N c. 1937, 9 June N d. 0737, 10 June 629: You are on a voyage from Belem, Brazil, to Mobile, AL. The distance from departure to arrival is 3150 miles. The speed of advance is 14.0 knots. You estimate a layover in San Juan, Puerto Rico, of 17.5 hours. If you took departure at 2200 (ZD +3h 30m), 26 February , what was your ETA (ZD +6) at Mobile?
N a. 1900, 8 March Y b. 2200, 8 March N c. 0400, 9 March N d. 2200, 9 March 674: What are the dimensions of the Port Allen Lock at Baton Rouge, LA?
N a. 75 feet x 1188 feet Y b. 84 feet x 1188 feet N c. 84 feet x 1180 feet N d. 75 feet x 1180 feet 703: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. List of Buoys and Daymarks N b. U.S.C.G. Light List N c. Army Corps. of Engineers Navigation Map Y d. None of the above 810: On 13 October , your 0515 zone time (ZT) fix gives you a position of LAT 26°53.0'N, LONG 90°05.0'W. Your vessel is on course 068°T, and your speed is 7.8 knots. Local apparent noon (LAN) occurs at 1145 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 54°51.5'. What is the calculated latitude at LAN?
Y a. 27°12.6'N N b. 27°14.1'N N c. 27°15.7'N N d. 27°16.2'N 825: On 15 August , an ex-meridian altitude of the Sun's lower limb at upper transit was observed at 1130 ZT. Your DR position is LAT 26°24.0'S, LONG 155°02.0'E, and your sextant altitude (hs) is 48°45.9'. The index error is 2.6' on the arc, and your height of eye is 51.5 feet. The chronometer time of the observation is 01h 27m 38s, and the chronometer error is 02m 14s slow. Find the latitude at meridian transit from the ex-meridian observation.
N a. LAT 26°32.6'S Y b. LAT 26°51.6'S N c. LAT 26°57.0'S N d. LAT 27°09.9'S 1149: As you approach Dean Island Light (mile 754.8 AHP), which type of daymark will be observed at the light?
N a. Green triangle Y b. Green diamond N c. Green square N d. Red-and-green banded square 1185: On 31 January , your 0920 zone time DR position is LAT 24°16.0'S, LONG 151°33.0'E. Your vessel is on course 258°T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?
N a. 1202 N b. 1207 Y c. 1211 N d. 1215 1750: In addition to the Army Corps. of Engineers maps, data on bridge clearances may be found in the __________.
N a. Army Corps. of Engineers Regulations Y b. Light List N c. Waterways Journal N d. Channel Report 1855: On 22 July , your 0442 ZT DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 112°T, at an observed altitude (Ho) of 44°16.0'. The chronometer reads 05h 39m 03s and is 03m 14s slow. What star did you observe?
N a. Hamal N b. Rigel Y c. Menkar N d. Acamar 1878: On 13 September , your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E when you observe a faint unidentifiable star through a hole in the clouds. The star bore 132.3°T at a sextant altitude (hs) of 29°34.6'. The chronometer read 11h 24m 39s and is 5m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe?
Y a. Beta Gruis N b. Sigma Capricorni N c. Scheat N d. Alpha Indi 1879: On 13 September , your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E when you observed a faint unidentifiable star through a hole in the clouds. The star bore 351.5°T at a sextant altitude (hs) of 62°05.6'. The chronometer read 11h 24m 39s and is 5m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe?
N a. Alpha Herculis N b. Kappa Scorpii N c. Alpha Arae Y d. Beta Ophiuchi 1890: On 22 July , your 1759 DR position is LAT 24°50.2'S, LONG 05°16.0'E. You observe an unidentified star bearing 100°T at an observed altitude (Ho) of 61°48.2'. The chronometer reads 06h 01m 31s, and is 02m 15s fast. What star did you observe?
N a. Regulus Y b. Antares N c. Miaplacidus N d. Suhail 2113: From your 0130 position, you change course to adjust for set and drift, and you later obtain the following bearings:
Mattituck Inlet Light bearing 104.5°true
Falkner Island Light bearing 001°true
What is the latitude and longitude of your 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 2340: You have steamed 775 miles at 17 knots, and consumed 145 tons of fuel. If you have to steam 977 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 18 knots?
Y a. 204 tons N b. 181 tons N c. 163 tons N d. 129 tons 2464: You have steamed 449 miles at 19 knots and burning 476 barrels of fuel per day. You must decrease your consumption to 185 barrels per day with 362 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
Y a. 13.2 N b. 14.3 N c. 17.1 N d. 18.2 2664: You are on course 061°T, at a speed of 12.4 knots. At 0839 you see a rock bearing 059°T at a range of 4.4 miles. If you change course at 0845 to leave the rock abeam to starboard at 1.5 mile, at what time will the rock be abeam?
N a. 0854 Y b. 0859 N c. 0903 N d. 0906 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 2862: Your are on course 317°T at 13 knots. A light is bearing 22.5° relative at 0640. At 0659 the same light is bearing 45° relative. At what time should the light be abeam?
N a. 0709 Y b. 0712 N c. 0718 N d. 0721 2868: Your vessel is on a course of 358°T at 19 knots. At 0316 a light bears 024.5°T, and at 0334 the light bears 043°T.
At what time and at what distance off will your vessel be when abeam of the light?
Y a. 0352, 5.7 miles N b. 0355, 6.2 miles N c. 0359, 7.1 miles N d. 0403, 8.0 miles 2888: Your vessel is underway on a course of 323.5°T at a speed of 16 knots. At 1945° a light bears 350°T. At 2010 the light bears 008.5°T. What will be your distance off when abeam of the light?
N a. 3.3 miles N b. 4.8 miles Y c. 6.7 miles N d. 8.7 miles 2901: You are steaming on a course of 198°T at 18.5 knots. At 0316 you observe a lighthouse bearing 235°T. At 0348 the lighthouse bears 259°T. What is your distance off at the second bearing?
Y a. 14.8 miles N b. 15.3 miles N c. 15.8 miles N d. 16.3 miles 3059: The propeller on a vessel has a diameter of 21.5 feet and a pitch of 24.5 feet. What would be the apparent slip if the vessel cruised 458 miles in a 23 hour day (observed distance) at an average RPM of 78?
N a. +5.6% Y b. -5.6% N c. +12.3% N d. -12.3% 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 3108: You are turning 105 RPM, with a propeller pitch of 17 feet, and an estimated slip of -1%. What is the speed of advance?
N a. 15.3 knots N b. 16.9 knots N c. 17.4 knots Y d. 17.8 knots 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 3633: You desire to make good a true course of 067°. The variation is 11°W, magnetic compass deviation is 3°E, and gyrocompass error is 1°W. A northwesterly wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 054°psc N b. 064°psc Y c. 070°psc N d. 074°psc 3653: The true course between two points is 106°. Your gyrocompass has an error of 2°E and you make an allowance of 2° leeway for a south wind. What gyro course should be steered to make the true course good?
N a. 102°pgc N b. 104°pgc Y c. 106°pgc N d. 108°pgc 11006: At what time will the first maximum flood occur 1 mile east of Old Field Point on 29 April 1983? (You are keeping daylight saving time ZD +4).
N a. 0957 N b. 1059 Y c. 1328 N d. 1423 11902: What is the true course to steer between the entrance to Lake Montauk (LAT 41°04.8'N, LONG 71°56.3'W) and Winnapaug Pond entrance) LAT 41°19.6'N, LONG 71°45.8'W), if you are turning for 9.5 knots, allow for a current of 075°T at 1.2 knots, and a westerly wind is causing 3° of leeway?
Y a. 021°T N b. 024°T N c. 027°T N d. 029°T 13508: The bottom approximately three miles to the ESE of Block Island Southeast Point has __________.
Y a. gravel N b. shale N c. stones N d. grit 13806: The chart symbol surrounding Saybrook Breakwater Light warns mariners that the navigational light structure is __________.
N a. no longer maintained Y b. protected by riprap N c. privately maintained N d. awash at high tide 14501: You are proceeding in an easterly direction on the Columbia River. The pool level of the Bonneville Reservoir stands at 65 feet above MSL. If the highest point on your vessel is 54 feet above the water, what will be the vertical clearance as you pass under the overhead power cables at mile 186.2?
N a. 94 feet N b. 101 feet Y c. 108 feet N d. 117 feet 14503: You have just cleared Bonneville Lock and are proceeding in an easterly direction on the Columbia River. The pool level of the Bonneville reservoir stands at 78 feet above MSL. If the highest point on your vessel is 46 feet above the water, what will be the vertical clearance when you pass under the overhead power cables at mile 146.5?
N a. 134 feet Y b. 138 feet N c. 144 feet N d. 150 feet 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 15215: At 2015, you alter course to 154°pgc. What is the course per standard magnetic compass (psc)?
Y a. 162°psc N b. 157°psc N c. 152°psc N d. 142°psc 15541: You alter course to make good 076°T from your 2200 fix,
and estimate you will make 13.6 knots over the ground. If the visibility is 5.5 miles, what is the earliest time you will sight Falkner Island Light? (nominal range 13 miles)
N a. The light is visible at 2200 N b. 2221 Y c. 2236 N d. You will not sight the light 15542: At 2214 you receive a "Securite" call requesting you to remain at least 2 miles away from underwater work taking place at LAT 41°07.8'N, LONG 72°34.6'W. If you change course at 2220 and allow 3° leeway for southerly winds which course will you steer per gyrocompass to comply with this request? No allowance made for current.
N a. 079°pgc N b. 083°pgc N c. 086°pgc Y d. 089°pgc 15724: You pass Morrison Towhead Light (mile 890.5 AHP) at 1723. What was your average speed since leaving Cairo?
N a. 7.5 mph N b. 7.8 mph Y c. 8.5 mph N d. 8.8 mph 15768: At 0830, Watch Hill Point bears 343°T at 3.5 miles by radar. What was the speed made good since 0745?
Y a. 7.1 knots N b. 6.7 knots N c. 5.8 knots N d. 5.4 knots 15814: At 0130, you obtain the following bearings:
Horton Point Lighthouse 078°T
Mattituck Breakwater Light tower 196°T
What were the course and speed made good between 0100 and 0130?
Y a. 246°T at 9.8 knots N b. 253°T at 9.4 knots N c. 259°T at 9.8 knots N d. 267°T at 9.4 knots 15956: The National Weather Service provides 24-hour weather broadcasts to vessels transiting the Chesapeake Bay Bridge Tunnel. The broadcasts may be found on __________.
N a. 202.35 MHz N b. 181.15 MHz Y c. 162.55 MHz N d. 147.45 MHz 16056: At 1730, your position is LAT 37°13.9'N, LONG 76°26.4'W. What is your distance off Tue Marshes Light?
N a. 2.2 miles Y b. 2.6 miles N c. 3.0 miles N d. 3.4 miles 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