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.
37: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads -3.6 feet. If the highest point on your vessel is 62 ft. above the water, what is your vertical clearance?
N a. 122.0 feet Y b. 67.6 feet N c. 63.6 feet N d. 60.0 feet 182: What course should you steer using the standard magnetic compass (psc) to make good the course of 192°pgc?
N a. 188°psc Y b. 203°psc N c. 205°psc N d. 208°psc 244: Your vessel is entering New London Harbor Channel. If there is no current, what should you steer per gyro compass to stay on the range?
N a. 006° N b. 357° N c. 354° Y d. 351° 246: The red sector of New London Harbor Light covers from __________.
N a. 040° - 310° N b. 000° - 031° N c. 208° - 220° Y d. 000° - 041° 413: A vessel steams 1106 miles on course 249°T from LAT 13°30.0'N, LONG 144°30.3'E. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 07°01.0'N, LONG 127°02.0'E Y b. LAT 06°54.0'N, LONG 127°08.0'E N c. LAT 06°50.0'N, LONG 127°13.0'E N d. LAT 06°46.0'N, LONG 127°17.0'E 476: The great circle distance from LAT 35°08.0'S, LONG 19°26.0'E to LAT 33°16.0'S, LONG 115°36.0'E is 4559 miles and the initial course is 121°T. Determine the longitude of the vertex.
N a. 26°50.9'E Y b. 65°45.9'E N c. 69°19.1'E N d. 72°18.3'E 555: Your 0507 position is about 7 miles from Bridgeport, CT. What is the distance from this position to Newport, RI?
N a. 114 miles N b. 101 miles N c. 95 miles Y d. 88 miles 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 1107: On 16 April , your 0200 zone time DR position is LAT 17°18'S, LONG 168°46'E. You are on course 236°T at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix.
N a. LAT 17°54.9'S, LONG 167°48.7'E N b. LAT 17°55.6'S, LONG 167°45.1'E N c. LAT 17°56.8'S, LONG 167°52.4'E Y d. LAT 18°00.4'S, LONG 167°49.2'E 1166: At 1032 on 24 June, you pass Carolina Landing Light(mile 508.8 AHP). What has been the average current since 2350, 23 June, if you have been making turns for 9.0 mph?
N a. 8.5 mph N b. 5.7 mph N c. 1.5 mph Y d. 0.5 mph 1179: On 26 September , your 0830 zone time DR position is LAT 26°04.0'N, LONG 129°16.0'W. Your vessel is on course 119°T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1124 N b. 1127 N c. 1130 N d. 1133 1187: On 17 March , your 0800 zone time DR position is LAT 21°27.0'N, LONG 65°25.0'W. Your vessel is on course 105°T at a speed of 17.5 knots. What is the zone time of local apparent noon (LAN)?
N a. 1210 N b. 1218 Y c. 1225 N d. 1231 1208: On 12 July , your 0800 ZT DR position is LAT 24°15.0'N, LONG 132°30.0'W. Your vessel is on course 045°T at a speed of 15.0 knots. What is the ZT of local apparent noon (LAN)?
N a. 1146 N b. 1148 Y c. 1152 N d. 1159 1216: It is 8 March and you are keeping zone time -3. You are on course 104°T, speed 21 knots. Your 0830 DR position is LAT 25°35.0'S, LONG 66°34.0'E. What is the time of the second estimate of LAN by ship's clocks?
Y a. 10h 41m 26s N b. 11h 15m 34s N c. 11h 17m 32s N d. 11h 36m 54s 1235: You are turning for 10 mph and passing Hog Point, LA. (mile 297.5 AHP). Angola reports that the current at Red River Landing is 4.5 mph. Which statement is TRUE?
N a. The main channel lies on the south side of the island you see ahead. N b. You are making 14.5 mph over the ground. Y c. An underwater stone dike has been constructed 0.5 miles upstream of Miles Bar Towhead. N d. You would expect to find the more favorable current near the broken red line in the river. 1476: On 16 September , your vessel's 0736 zone time DR position is LAT 27°34'S, LONG 174°49'E, when an azimuth of the Sun is observed. The chronometer time of the sight is 07h 38m 11s, and the Sun is bearing 079.8° per gyrocompass. The chronometer error is 01m 46s fast, and the variation in the area is 11.0°W. At the time of the sight, the helmsman reports that he was heading 252°pgc and 258° per magnetic compass. What is the deviation of the magnetic compass?
N a. 2°W N b. 3°W Y c. 3°E N d. 8°W 1545: You are downbound, passing by Warfield Point Lt. (mile 537 AHP), when you observe on your Mississippi River map several black lines extending into the river from the bank. These indicate __________.
N a. revetments N b. weirs N c. fleeting areas Y d. dikes 1667: On Sunday, 8 November, your ship is enroute from Texas City, TX, to Portland, ME. At 0632 ZT, you fix your position at LAT 27°06'N, LONG 90°36'W. When the lower limb of the Sun was two-thirds of a diameter above the visible horizon, the Sun bore 105° per standard magnetic compass. At this time the chronometer read 12h 39m 20s and is 3m 20s slow. If the variation is 3°E, determine the deviation of the standard compass.
Y a. 0.8°E N b. 0.8°W N c. 3.8°E N d. 3.8°W 1759: The Greenville Gage reads 1.6 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?
Y a. 74.5 feet N b. 64.2 feet N c. 55.5 feet N d. 44.4 feet 1863: On 14 January , your 1922 ZT DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 029°T, at an observed altitude (Ho) of 29°35.0'. The chronometer reads 03h 25m 43s and is 03m 15s fast. What star did you observe?
Y a. Elnath N b. Fomalhaut N c. Pollux N d. Markab 1877: On 2 October , your 1845 DR position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the clouds at a sextant altitude (hs) of 63°29.1' bearing 237.5°T. The index error is 1.3' off the arc, and the height of eye is 42 feet. The chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe?
Y a. Kappa Scorpii N b. Beta Ophiuchi N c. Alpha Arae N d. Beta Draconis 1891: On 22 July , your 1759 DR position is LAT 24°50.2'S, LONG 005°16.0'E. You observe an unidentified star bearing 203°T at an observed altitude (Ho) of 28°12.2'. The chronometer reads 06h 01m 31s, and is 02m 15s fast. What star did you observe?
N a. Regulus N b. Antares Y c. Miaplacidus N d. Suhail 2094: At your current speed of 20 knots you only have enough fuel remaining to travel 218 miles. You must travel 395 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
N a. 17.4 N b. 16.2 Y c. 14.9 N d. 13.7 2153: At 0800 ZT, on 29 June , your DR position is LAT 26°00.0'N, LONG 75°29.5'W. Given a chronometer time of 01h 00m 00s, determine the computed altitude (Hc) of the Sun for the assumed position nearest to the above given latitude and longitude.
N a. Hc 34°38.6' N b. Hc 34°48.6' Y c. Hc 34°58.6' N d. Hc 35°18.6' 2161: On 28 April , your vessel's 0515 zone time position is LAT 23°26'S, LONG 95°30'E. At this time, the observed altitude (Ho) of the star Rigil Kentaurus is 24°51.4'. Your chronometer reads 11h 16m 36s and is 01m 18s fast. What is the intercept (a) based on the assumed position method?
N a. 30.9 miles N b. 32.3 miles N c. 33.1 miles Y d. 34.4 miles 2245: You are entering the channel at buoy 29 and turning for 9 knots. An easterly 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 middle leg of York Spit Channel?
N a. 162°T Y b. 165°T N c. 168°T N d. 171°T 2294: You are passing Eastwood Lt. (mile 849.3 AHP) and the map indicates that Bunge Grain facility would be located at the square with number __________.
N a. 4 N b. 6 N c. 8 Y d. 10 2425: You are taking a time tick using the 2100 signal from Callao, Peru. You hear a series of 1 second dashes followed by a 9 second silent period, then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 09h 00m 07s. When compared to the chronometer, the comparing watch reads 09h 01m 12s, and the chronometer reads 08h 59m 32s. What is the chronometer error?
Y a. 1m 33s slow N b. 0m 28s slow N c. 1m 05s fast N d. 0m 07s fast 2869: Your vessel is on a course of 237°T at 18 knots. At 0404 a light bears 263.5°T, and at 0430 the light bears 282°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0448, 6.8 miles N b. 0452, 7.2 miles Y c. 0456, 7.8 miles N d. 0500, 8.4 miles 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 3317: Your vessel consumes 156 barrels of fuel per day at a speed of 13.0 knots. What will be the fuel consumption of your vessel at 16.0 knots?
N a. 192 bbls N b. 236 bbls Y c. 291 bbls N d. 315 bbls 3645: The true course between two points is 119°. Your gyrocompass has an error of 3°E. You allow of 4° leeway for a south-southwest wind. What gyro course should be steered to make the true course good?
N a. 112°pgc N b. 118°pgc Y c. 120°pgc N d. 126°pgc 3647: The true course between two points is 220°. Your gyrocompass has an error of 1°E. You make an allowance of 1° leeway for a north-northwest wind. What gyro course should be steered to make the true course good?
Y a. 220°pgc N b. 221°pgc N c. 222°pgc N d. 223°pgc 11009: What best describes the structure from which Stratford Point Light is shown?
N a. Brown conical tower with white horizontal band in center of light on black pier N b. Red conical tower on brown cylindrical pier N c. White octagonal house on brown cylindrical pier Y d. White conical tower, with brown band midway of height 11403: At 2115 your position is LAT 41°14.4'N, LONG 72°07.2'W. At 0015 your position is LAT 41°03.3'N, LONG 72°37.9'W. What was your true course made good?
N a. 062°T N b. 076°T Y c. 245°T N d. 259°T 11407: At 1930 your GPS position is LAT 41°00.5'N, LONG 72°49.5'W. At 2018 your position is LAT 41°08.6'N, LONG 72°41.6'W. What was your true course and speed made good?
N a. 219° at 10.1 knots N b. 214° at 12.5 knots Y c. 036° at 12.6 knots N d. 039° at 11.2 knots 11908: Your position is 3 miles due east of Montauk Point Light. What is the course to steer to arrive at LAT 41°00.0'N, LONG 71°30.0'W, if you are turning for 7.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
Y a. 117°T N b. 112°T N c. 104°T N d. 102°T 12203: Your vessel is steady on a heading of 310° per standard magnetic compass when you sight Stratford Point Light and Igor I. Sikorsky Airport Aero Beacon in line dead ahead. This information indicates that the __________.
N a. existing deviation table is correct for this heading N b. deviation is 1°E N c. variation is 18°W for this area Y d. compass error is 10°W 12208: You sight Stratford Pt. Light in line with the Igor I. Sikorsky Airport Aero Beacon bearing 319° per standard magnetic compass. What is the compass error?
N a. 4°E N b. 10°W N c. 14°E Y d. 18°W 13006: Your 1600 position is LAT 41°08.0'N, LONG 72°44.8'W. You are making turns for 14 knots. What is your ETA at Mattituck Inlet?
N a. 1636 N b. 1643 Y c. 1647 N d. 1651 13702: What chart should you use in Lynnhaven Bay (west of Cape Henry)?
N a. 12221 N b. 12256 N c. 12205 Y d. 12254 15038: At 0705 you obtained the following Loran readings:
9960-X-27091.2
9960-Y-41612.8
9960-Z-58744.2
What is your vessel's position?
N a. 37°20.4'N 75°30.2'W Y b. 37°20.8'N 75°29.9'W N c. 37°21.3'N 75°29.5'W N d. 37°21.2'N 75°30.4'W 15069: During extreme low water, the soundings near Saybrook may require corrections up to __________.
N a. 1 foot (+.3 meters) N b. -2 feet (-.6 meters) Y c. -3.5 feet (-1.1 meters) N d. The sounding datum is based on extreme low water and no correction is necessary 15119: What is the height above water of Davis Creek Channel Light "1"?
N a. 6 feet (1.8 meters) Y b. 15 feet (4.6 meters) N c. 17 feet (5.2 meters) N d. 24 feet (7.3 meters) 15509: At 1800, your position is LAT 41°06.5'N, LONG 71°43.5'W. How would the buoy which bears approximately 040°T from your position at a range of half a mile be painted?
Y a. Horizontally banded, green over red, with a green buoyancy chamber N b. Horizontally banded, red over green, with a red buoyancy chamber N c. Vertically striped, red and green N d. Solid green with red letters "BIS" 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) 15817: The south coast of Long Island Sound between Mattituck Inlet and Port Jefferson is __________.
N a. composed of high rocky bluffs N b. a high, flat plateau with sheer cliffs Y c. fringed by rocky shoals N d. low and marshy with isolated beaches 16308: At 0530, your position is LAT 41°13.6'N, LONG 72°08.5'W. What is the color of New London Harbor Light?
Y a. Red N b. White N c. Green N d. Alternating white and green 16313: At 0730, visibility is 5.5 miles. At what time will you lose sight of Horton Point Light?
N a. It is not visible at 0730 Y b. 0751 N c. 0812 N d. 0825 16463: The visibility is about 5 miles. Which statement about Cape Charles Light is TRUE?
N a. The light has been visible since you departed the anchorage. N b. You will not see the light until you are within 5 miles of the light. Y c. The light will become visible about 0400. N d. The light will not be visible until you enter the inbound leg of the traffic separation scheme. 16506: At 0630, you pass Buoy "PI" close abeam on the starboard side. You are steering 078°T and are headed directly toward Race Rock Light. At 0654, Little Gull Island Light is bearing 207°T and Race Rock Light is bearing 072°T. What is your 0654 position?
Y a. LAT 41°14.0'N, LONG 72°05.3'W N b. LAT 41°14.2'N, LONG 71°54.6'W N c. LAT 41°14.4'N, LONG 72°06.8'W N d. LAT 41°19.0'N, LONG 72°05.2'W 16710: In clear weather, how far away will you sight Point Judith Light? (use charted range of 20 miles as nominal range)
N a. 9.2 nm N b. 10.6 nm N c. 12.3 nm Y d. 14.0 nm