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.
55: After you get underway, what is the first river gage you will pass?
Y a. Bayou Sara N b. Baton Rouge N c. Head of Passes N d. Red River Landing 57: At 0922, on 24 May, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 8.0 mph, what is the current?
N a. 7.0 mph N b. 2.0 mph N c. 1.4 mph Y d. 1.0 mph 181: You are on course 192°pgc at 12 knots. At 1900 you fix your position using the following information:
Sand Shoal Inlet South Light bearing 244°true @ 11 nm
What is your latitude and longitude at 1900?
N a. LAT 37°21.5'N, LONG 75°34.8'W N b. LAT 37°22.0'N, LONG 75°34.9'W N c. LAT 37°22.2'N, LONG 75°35.0'W Y d. LAT 37°22.6'N, LONG 75°35.7'W 330: Which chart could you use for greater detail of the area at the south end of York Spit Channel?
N a. 12254 N b. 12226 N c. 12224 Y d. 12222 446: At 1345, you depart from a position 1 mile due east of Montauk Point Light and set course for Block Island Southeast Light at 9 knots. At 1430, your position is:
Latitude 41° 06.3' North
Longitude 071° 41.9' West
What was the current encountered since 1345?
N a. Set 015°, drift 0.5 knot N b. Set 195°, drift 0.7 knot N c. Set 015°, drift 0.7 knot Y d. Set 195°, drift 0.5 knot 479: The great circle distance from LAT 24°25.3'N, LONG 83°02.6'W to LAT 35°57.2'N, LONG 5°45.7'W is 3966.5 miles. Determine the latitude of the vertex.
N a. 38°46.2'N N b. 38°16.4'N Y c. 38°09.4'N N d. 37°57.3'N 491: At 0748, you take the following bearings:
Watch Hill Point Light bearing 020.5° pgc
Race Point Light bearing 267.5° pgc
What is the approximate depth of water at this position?
N a. 104 feet Y b. 130 feet N c. 175 feet N d. 325 feet 511: At 0130, your position is LAT 41°09.3'N, LONG 72°46.9'W when you change course to 086°T. If you make good 086°T, what is the closest point of approach to Twenty-Eight Foot Shoal Lighted Buoy?
N a. 1.2 mile N b. 1.1 mile Y c. 0.9 miles N d. 0.7 miles 546: At 0705, you take the following bearings:
Watch Hill Light 030.5°pgc
Latimer Reef Light 329.0°pgc
Race Rock Light 262.0°pgc
What was the true course made good between 0645 and 0705?
N a. 266°T N b. 263°T Y c. 256°T N d. 252°T 551: 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?
Y a. LAT 41°05.2'N, LONG 73°07.8'W N b. LAT 41°05.0'N, LONG 73°07.5'W N c. LAT 41°05.0'N, LONG 73°07.3'W N d. LAT 41°04.8'N, LONG 73°07.3'W 596: At 0921, on 24 July, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 10.0 mph, what was the current since departure?
N a. 1.4 mph Y b. 1.7 mph N c. 2.0 mph N d. 7.0 mph 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 731: On 2 January , your 1759 zone time DR position is LONG 45°17.6'W. At that time you observe Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is 08h 57m 10s, and the chronometer error is 02m 16s slow. The index error is 3.5' on the arc, and the height of eye is 42.5 feet. What is your latitude by Polaris?
N a. 22°50.2'N Y b. 23°18.8'N N c. 23°30.8'N N d. 23°48.8'N 1194: On 16 January your 0930 ZT DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your vessel is on course 238°T at a speed of 17.0 knots. What is the ZT of local apparent noon (LAN)?
Y a. 1145 N b. 1148 N c. 1152 N d. 1156 1252: On 13 August , your 0345 ZT DR position is LAT 21°35.0'
N, LONG 135°26.0'W. You are on course 052°T at a speed of 14 knots. What will be the zone time of sunrise at your vessel?
N a. 0443 N b. 0449 Y c. 0536 N d. 0540 1284: On 10 November , your 1630 zone time DR position is LAT 25°10.0'N, LONG 71°12.0'W. You are on course 335°T at a speed of 24 knots. What will be the zone time of sunset at your vessel?
N a. 1650 Y b. 1700 N c. 1715 N d. 1730 1286: As you pass under the Vicksburg Bridges, you estimate the current as 3.0 mph. What is the speed over the ground, if your vessel is making turns for 10.5 mph?
N a. 16.5 mph Y b. 13.5 mph N c. 10.5 mph N d. 7.5 mph 1295: After passing Wilkinson Lt. you see a flashing amber light on the right descending bank ahead. The flashing light indicates that you should __________.
N a. stay in the deepest water N b. slow down due to dredging operations Y c. keep as close to the left descending bank as safety permits N d. keep as close to the right descending bank as safety permits 1670: On 10 August , your vessel's 0426 zone time DR position is LAT 52°07'N, LONG 142°16'E, when an amplitude of the Sun is observed. The Sun's lower limb is about 20 minutes of arc above the visible horizon and bears 074.5° per standard compass. Variation in the area is 12°W. The chronometer reads 07h 24m 19s and is 02m 34s fast. Which of the following is the deviation of the standard compass?
N a. 0.0° N b. 1.3°W Y c. 1.3°E N d. 2.3°W 1683: You are taking a time tick using the 1930 signal from Rio de Janeiro, Brazil. You hear the preparatory signal "CQ DE PPE" repeated several times followed by a short dash (0.4 sec), 60 dots (0.1 sec each) and another short dash. At the beginning of the last dash, the comparing watch reads 07h 30m 08s. When compared to the chronometer, the comparing watch reads 07h 31m 48s, and the chronometer reads 07h 32m 16s. What is the chronometer error?
N a. 0m 28s slow N b. 1m 40s slow N c. 0m 08s fast Y d. 0m 36s fast 1688: As you approach Ashland Light (mile 378.1 AHP), which type of daymark would you see on the light structure?
N a. Green square N b. Green triangle N c. Red diamond Y d. Red triangle 1705: What is the mile point of the Rosedale, MS Gage?
N a. 554.2 AHP Y b. 592.2 AHP N c. 632.5 AHP N d. 663.0 AHP 1707: You are passing the Memphis Gage at 0405, 18 March. If you are turning for 8 mph and estimate the current at 2.3 mph,
what is your ETA at Cairo Point, IL (mile 954.5 AHP)?
N a. 0447, 19 Mar N b. 1052, 19 Mar N c. 1518, 19 Mar Y d. 1839, 19 Mar 1764: The Gage at Red River Landing reads 43.4 feet. The low water reference plane (LWRP) for Red River Landing, LA. Is 10.6 ft. How many feet is this above the low water reference plane?
N a. 10.6 ft N b. 11.6 ft N c. 22.2 ft Y d. 32.8 ft 1806: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. U.S.C.G. Light List Y b. U.S.C.G. Local Notice to Mariners N c. Army Corps. of Engineers Navigation Chart N d. List of Buoys and Daymarks 2170: On 22 July , at 0720 ZT, in DR position LAT 20°38.2'N, LONG 87°16.0'W, you observe the Moon's lower limb. The sextant altitude (hs) is 38°32.6, and the chronometer reads 01h 18m 14s. The chronometer is 01m 28s slow. The index error is 3.1' off the arc, and the height of eye is 68 feet. What is the azimuth (Zn) and intercept (a) of this sight from the assumed position?
N a. Zn 291.4°, a 5.2' A N b. Zn 111.4°, a 8.7' A Y c. Zn 248.6°, a 5.0' T N d. Zn 068.6°, a 6.5' T 2403: At 0812 you obtain the following information:
Chesapeake Light bearing 091° true @ a range of 10.5 nm
What is your 0812 position?
N a. LAT 36°53.7'N, LONG 75°56.0'W N b. LAT 36°53.8'N, LONG 75°56.1'W Y c. LAT 36°54.4'N, LONG 75°55.9'W N d. LAT 36°54.6'N, LONG 75°55.8'W 2673: At 2221 your course is 222°pgc at a speed of 11.2 knots, when radar detects a buoy bearing 355° relative, at a range of 5.8 miles. The gyro error is 2°E. If you change course at 2226, what course should you steer to leave the buoy 1.0 mile abeam to port?
N a. 206°pgc N b. 210°pgc Y c. 228°pgc N d. 231°pgc 4005: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 022°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 354° 122.5° - 114° 239.5° - 234°
030.5° - 024° 152.0° - 144° 269.0° - 264°
061.5° - 054° 181.0° - 174° 298.0° - 294°
092.0° - 084° 210.0° - 204° 327.5° - 324°
N a. 1.5°E N b. 0.5°E Y c. 0.0° N d. 0.5°W 11014: What will be the velocity of the tidal current outside the breakwater at New Haven Hbr. entrance on 26 May 1983 at 1045 DST (ZD +4)?
N a. 0.0 knot N b. 0.3 knot Y c. 0.5 knot N d. 1.3 knots 11306: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 1950 your position is LAT 36°59.5'N, LONG 75°37.0'W. What is the speed made good?
N a. 5.6 knots N b. 8.2 knots N c. 9.1 knots Y d. 10.9 knots 11307: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 2031 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the speed made good?
N a. 8.2 knots N b. 9.3 knots Y c. 10.0 knots N d. 10.9 knots 11405: At 2125 your GPS position is LAT 41°05.7'N, LONG 72°46.5'W. At 2208 your position is LAT 41°03.3'N, LONG 72°37.9'W. What was your course made good by standard magnetic compass?
Y a. 123°psc N b. 287°psc N c. 303°psc N d. 326°psc 11500: At 2016 your GPS position is LAT 41°07.6'N, LONG 71°37.8'W. At 2128 your GPS position is LAT 41°00.4'N, LONG 71°29.4'W. What was the speed made good between the two positions?
N a. 11.9 knots N b. 10.2 knots Y c. 8.0 knots N d. 7.4 knots 11507: At 1014 you depart the entrance to Lake Montauk with light "1" close aboard. Your course is 066° per standard magnetic compass, and the speed is 8.6 knots. At 1222 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good?
N a. 8.4 knots N b. 8.6 knots Y c. 9.2 knots N d. 9.6 knots 11705: Your position is LAT 37°00.0'N, LONG 75°30.0'W. What is the course to steer per standard magnetic compass to arrive at LAT 36°59.0'N, LONG 75°48.5'W, if the current is 043°T at 1.3 knots, a south-southeasterly wind is causing 3° of leeway, and you are turning for 8.7 knots?
N a. 260.5°psc N b. 264.0°psc Y c. 268.0°psc N d. 271.5°psc 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 12908: At 0919 you are inbound, approximately 3.3 miles east of Cape Henry with buoy "15" close aboard to port. What is your ETA between Trestle B and Trestle C of the Chesapeake Bay Bridge and Tunnel if you are making 11.3 knots?
N a. 1010 Y b. 1014 N c. 1019 N d. 1025 14703: At 0800 your vessel is at mile 110 proceeding in an easterly direction on the Columbia River. At 1030 Reed Island is abeam to port as you pass the 125 mile mark. What has been your average speed in knots?
N a. 4.3 knots Y b. 5.2 knots N c. 8.7 knots N d. 10.0 knots 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 15161: From your 1815 position, you want to make good course 263°
T. Your engines are turning RPMs 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. 1851 N b. 1857 Y c. 1904 N d. 1911 15213: At 2015, your vessel is at the Chesapeake Bay Bridge and Tunnel midway between buoys "13" and "14". If the height of tide is -1 foot (-0.3 meters), what is the approximate depth of water?
Y a. 53 feet (15.5 meters) N b. 46 feet (13.9 meters) N c. 40 feet (12.1 meters) N d. 35 feet (10.6 meters) 15239: At 1000 buoy "PI" is abeam to starboard a distance of 0.5 mile. From this position, with a set of 295° and a drift of 1.6 knots, what course must you steer to arrive at a point with Buoy "TE" one mile abeam to starboard?
Y a. 247°T N b. 249°T N c. 251°T N d. 253°T 15459: At 0823, Old Point Comfort Light bears 000°T at 0.6 mile. What is your 0823 position?
Y a. LAT 36°59.5'N, LONG 76°18.4'W N b. LAT 36°59.0'N, LONG 76°21.6'W N c. LAT 36°59.0'N, LONG 76°19.6'W N d. LAT 36°55.5'N, LONG 76°18.6'W 15513: If your height of eye is 35 feet (10.7 meters), what is the approximate geographic range of Block Island North Light?
N a. 7.4 nm N b. 13.0 nm N c. 14.3 nm Y d. 15.8 nm 15515: 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°54.0'W N b. LAT 41°13.1'N, LONG 71°53.9'W N c. LAT 41°13.2'N, LONG 71°54.3'W Y d. LAT 41°13.2'N, LONG 71°53.7'W 15910: At 0802, Branford Reef Light bears 348°T at 0.75 mile,
and the north point of Falkner Island bears 088°T at 6.7 miles. What were the set and drift since 0740?
N a. Set 040°T, drift .3 knot Y b. Set 220°T, drift .9 knot N c. Set 220°T, drift .3 knot N d. You are making good your intended course and speed. 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 16139: From your 1930 position, you set a course of 150°T. Your engine speed is 13 knots. What will be your distance off Valiant Rock Bell Buoy "1A" when abeam, if you make good your true course of 150°?
N a. 0.8 mile Y b. 1.0 miles N c. 1.2 miles N d. 1.4 miles 16218: At 0830, Watch Hill Point bears 343°T at 3.5 miles by radar. What was the speed made good since 0745?
N a. 5.4 knots N b. 5.8 knots N c. 6.7 knots Y d. 7.1 knots 16312: Assuming no current, at what time can you expect to be abeam of Townshend Ledge Lighted Buoy?
N a. 0859 N b. 0902 N c. 0905 Y d. 0910 16640: At 0445 you take the following lines of position:
Montauk Point Light 292°pgc
Block Island Southeast Point Light 024°pgc
What was the current encountered since your 0400 fix?
N a. 004°, 0.7 knot Y b. 004°, 0.9 knot N c. 184°, 0.7 knot N d. 184°, 0.9 knot