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.
96: As you approach Kate Aubrey Towhead Light (mile 789.5 AHP), your searchlight will show what type of marking at the light?
Y a. Green diamond N b. Red and green banded square N c. Green triangle N d. Green square 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° 374: You calculate that the current will be ebbing at the Race at 0700. You should expect to be set in which general direction at the Race?
N a. West Y b. East N c. Northeast N d. North 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 466: Determine the great circle distance and initial course from LAT 25°50.0'N, LONG 77°00.0'W to LAT 35°56.0'N, LONG 06°15.0'W.
N a. 3470 miles, 298°T N b. 3518 miles, 028°T Y c. 3616 miles, 062°T N d. 3718 miles, 118°T 496: At 0815, you change course to 079°T and head for the entrance of Great Salt Pond on Block Island. To compensate for a northerly wind, you estimate a 5° leeway is necessary. What course should you steer per gyrocompass to make good 079°T?
Y a. 071°pgc N b. 074°pgc N c. 076°pgc N d. 079°pgc 564: Horton Point Light __________.
N a. is 14 feet above sea level N b. has a fixed green light Y c. is shown from a white square tower N d. is synchronized with a radio beacon 613: On 21 November, at 2100 zone time, you depart LAT 32°12.0'N, LONG 69°26.0'W enroute to LAT 12°05.0'N, LONG 7°32.0'W. The distance is 3,519 miles, and the average speed will be 12.5 knots. What is the zone time of arrival?
N a. 1330, 3 December N b. 1530, 3 December Y c. 1830, 3 December N d. 1530, 4 December 632: The Memphis Gage reads 18.4 feet. The high point of your towboat is 48 feet above water. What is the vertical clearance as you pass under the Memphis Highway Bridge?
Y a. 46.4 feet N b. 53.8 feet N c. 66.4 feet N d. 75.4 feet 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 669: You are planning a voyage from Cape May (LAT 38°45'N, LONG 74°45'W) to Lisbon (LAT 38°37'N, LONG 09°45'W). Which of the following is TRUE? (Use gnomonic chart WOXZC 5274)
N a. Because the latitudes are almost the same, a great circle track approximates a parallel sailing. Y b. The northern hemisphere vertex is approximately at longitude 42°26'W. N c. The distance is measured by using the length of one degree of the meridian at the position of the vertex. N d. A composite sailing must be plotted to remain south of a limiting latitude of 44°N. 672: What is the total length of the trip?
Y a. 922.3 miles N b. 985.3 miles N c. 1155.8 miles N d. 1187.3 miles 741: On 16 February , your 1845 ZT DR position is LAT 25°50.5'N, LONG 46°24.0'W. At that time you observe Polaris with a sextant altitude (hs) of 26°25.5'. The chronometer time of the sight is 09h 47m 30s and the chronometer error is 02m 16s fast. The index error is 2.5' off the arc, and the height of eye is 55.0 feet. What is your latitude by Polaris?
Y a. 25°38.0'N N b. 25°44.2'N N c. 26°00.1'N N d. 26°37.5'N 748: On 7 May , you observe Polaris for latitude at 0303 ZT. Your DR position is LAT 56°35.4'N, LONG 05°38.9'W. The sextant altitude is 56°11.1'. The height of eye is 36', and the index error is 3.3' off the arc. What is the latitude at the time of the sight?
N a. 56°24.6'N N b. 56°32.6'N N c. 56°35.0'N Y d. 56°38.7'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 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 1021: On 30 March , your 0145 DR position is LAT 29°30'S, LONG 122°45'E. You are on course 055°T at a speed of 22 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix.
N a. LAT 28°24.6'S, LONG 124°21.4'E Y b. LAT 28°39.9'S, LONG 124°18.6'E N c. LAT 28°41.5'S, LONG 124°41.5'E N d. LAT 29°20.1'S, LONG 123°41.0'E 1167: Where can scheduled broadcast times of river stages be found?
N a. Sailing Directions N b. List of Lights Y c. Light List N d. Coast Pilot 1198: On 3 October , your 0830 zone time DR position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course 280°T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1201 N b. 1158 N c. 1155 N d. 1152 1231: Which company does NOT have a marine facility along the river bank in Madison Parish (mile 457.0 AHP)?
N a. Complex Chemical Co. N b. Delta Southern Railroads N c. Farm Chemical Y d. Baxter Wilson 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 1451: On 11 December , your 1816 ZT DR position is LAT 26°30.0'N, LONG 140°35.0'E. At that time, you observe Venus bearing 230°pgc. The chronometer reads 09h 14m 52s and the chronometer error is 01m 02s slow. The variation is 3.5°E. What is the gyro error?
N a. 2.2°E Y b. 3.3°E N c. 3.2°W N d. 4.2°W 1736: What are the color and shape of Joseph Henry Daymark at mile 445.2 AHP?
N a. Red - Triangle N b. Green - Square N c. Green - Triangle Y d. Red - Diaomond 1889: On 22 July , your 1759 DR position is LAT 24°50.2'S, LONG 05°16.0'E. You observe an unidentified star bearing 293°T at an observed altitude (Ho) of 17°52.8'. The chronometer reads 06h 01m 31s, and is 02m 15s fast. What star did you observe?
Y a. Regulus N b. Antares N c. Miaplacidus N d. Suhail 2087: At your current speed of 21 knots you only have enough fuel remaining to travel 404 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. 18.9 N b. 17.8 N c. 16.7 Y d. 15.6 2176: On 9 November , at 0426 ZT, your position was LAT 25°17.0'S, LONG 154°16.0'E. Your vessel is steaming at 14.0 knots on course 066°T. A sextant observation of the Sun's lower limb is made at 0837 ZT. The chronometer reads 10h 35m 21s, and the sextant altitude (hs) is 50°26.9'. The index error is 1.5' on the arc, and the chronometer error is 01m 48s slow. Your height of eye on the bridge is 56.0 feet. What is the observed altitude (Ho) and azimuth (Zn) of this sight using the assumed position?
N a. 50°18.1', 086.3°T N b. 50°18.1', 093.7°T Y c. 50°33.5', 085.9°T N d. 50°33.5', 093.7°T 2185: At 1000 ZT, on 21 October , your DR position is LAT 29°00'N, LONG 134°40'E. Determine the computed altitude (Hc) of the Sun for the assumed position (AP) nearest to the above given latitude and longitude, given a chronometer time of 01h 00m 00s.
N a. Hc 42°30.6' N b. Hc 42°32.1' N c. Hc 42°34.2' Y d. Hc 42°35.7' 2281: You observe the lower limb of the Sun at a sextant altitude (hs) of 62°22.2' on 6 June . The index error is 1.2' on the arc. The height of eye is 28 feet (8.5 meters). What is the observed altitude (Ho)?
N a. 62°24.8' N b. 62°26.9' Y c. 62°31.4' N d. 62°36.7' 2290: You observe the lower limb of the Sun at a sextant altitude (hs) of 75°12.3' on 6 August . The index error is 1.5' off the arc. The height of eye is 32 feet (9.8 meters). What is the observed altitude (Ho)?
N a. 75°18.6' Y b. 75°24.0' N c. 75°30.7' N d. 75°34.6' 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 2675: At 1423 you are on course 072 T° at 12.2 knots, when you sight a rock awash bearing 070°T at a range of 3.6 miles. If you change course at 1427, what course would you steer to leave the rock 1.0 mile abeam to port?
N a. 049° N b. 054° N c. 086° Y d. 091° 2863: Your vessel is underway on a course of 115°T at 18 knots. At 1850 a lighthouse bears 137.5°T. At 1920, the same lighthouse bears 160°T. What time will the lighthouse pass abeam to starboard?
N a. 1929 Y b. 1941 N c. 1949 N d. 1955 3054: The propeller on a vessel has a diameter of 22.8 feet and a pitch of 19.3 feet. What would be the apparent slip if the vessel cruised 287 miles in a 24 hour day (observed distance) at an average RPM of 67?
N a. -6.3% Y b. +6.3% N c. -24.0% N d. +24.0% 3100: The pitch of the propeller on your vessel is 19'09". You estimate the slip at -3%. If you averaged 82 RPM for the day's run, how many miles did you steam?
N a. 370.8 N b. 373.6 N c. 393.7 Y d. 395.3 10610: At 1645 your GPS position is LAT 41°04.9' N, LONG 72°42.1'W. You are on course 072° per standard magnetic compass at a speed of 14 knots. At 1727 another GPS fix places your vessel 1 mile due north of Twenty-Eight Foot Shoal Lighted Buoy TE. What were your set and drift?
N a. 032°T at 1.2 knot Y b. 026°T at 1.1 knot N c. 207°T at 0.9 knot N d. 212°T at 1.2 knots 10703: At 1516 your position is LAT 41°11.3'N, LONG 71°48.6'W. You are on course 300° per standard magnetic compass at 9.4 knots. At 1600 your position is LAT 41°14.0'N, LONG 71°58.1'W. What were the set and drift?
N a. 142°T at 1.9 knots N b. 153°T at 1.4 knots Y c. 332°T at 1.5 knots N d. 347°T at 1.1 knots 11003: What best describes the condition of the tidal current at New London Harbor Entrance, at 0945 on 3 March 1983?
N a. It is slack water. Y b. The current has reached its maximum flood velocity. N c. It has reached its maximum ebb velocity. N d. The current is approaching slack water. 11504: At 1016 your position is LAT 41°07.6'N, LONG 71°38.5'W. At 1116 your position is LAT 41°01.4'N, LONG 71°29.4'W. What was the course made good between the two positions?
Y a. 132°T N b. 135°T N c. 140°T N d. 143°T 11706: 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 you are turning for 8.7 knots, the current is 039°T at 1.3 knots, and a northwesterly wind is causing 3° of leeway?
N a. 264.0° N b. 267.5° N c. 270.0° Y d. 273.0° 11901: You are turning for 7.5 knots and a westerly wind is causing 2° of leeway. There is a current of 047°T at 1.2 knots. What course should you steer between the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W) and the entrance to Great Salt Pond (LAT 41°12.0'N,
LONG 71°35.6'W)?
N a. 156°T Y b. 155°T N c. 144°T N d. 140°T 12600: You are on course 243° per standard magnetic compass when you take the following bearings: Falkner Island Light 342°psc Mattituck Inlet Light 207°psc Horton Point Light 112°psc What is your position?
N a. LAT 41°05.9'N, LONG 72°32.7'W N b. LAT 41°05.7'N, LONG 72°31.8'W Y c. LAT 41°05.5'N, LONG 72°32.6'W N d. LAT 41°05.3'N, LONG 72°31.9'W 13500: The soundings on this chart are measured in __________.
Y a. feet N b. yards N c. meters N d. fathoms 13700: Local magnetic disturbances of up to how many degrees have been noted from Cape Henry to Currituck Beach Light?
N a. 2 degrees Y b. 6 degrees N c. 11 degrees N d. 17 degrees 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 15469: At 1037, you are on course 010°T at 10 knots, when you take the following bearings:
Old Plantation Flats Light bearing 125°pgc
Wolf Trap Light bearing 338°pgc
New Point Comfort Light bearing 286°pgc
What is your 1037 position?
N a. LAT 37°15.9'N, LONG 76°07.1'W Y b. LAT 37°16.1'N, LONG 76°07.4'W N c. LAT 37°16.2'N, LONG 76°07.8'W N d. LAT 37°16.3'N, LONG 76°07.2'W 15608: At 1630, you reach point A and come right to 204°T. Your engine speed is 12 knots. Your 1715, position is LAT 37°09.8'N, LONG 75°37.4'W. The current was __________.
N a. 067°T at 1.1 knots N b. 246°T at 1.1 knots Y c. 067°T at 1.5 knots N d. 246°T at 1.5 knots 15630: The area between Island 67 Upper Light (mile 623.1 AHP) and Sunflower Cut-off Foot Light (mile 624.8 AHP) is known as a __________.
N a. transit N b. chute Y c. crossing N d. slough 16117: What is the distance from your 0731 fix to Wilmington, N.C.
(LAT 34°14.0'N, LONG 77°57.0'W)?
Y a. 339 miles N b. 363 miles N c. 402 miles N d. 486 miles 16320: Which course should you change to per standard magnetic compass as you pass SW Ledge Light to remain in the channel?
N a. 007°psc N b. 014°psc Y c. 021°psc N d. 026°psc 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 16610: At 2142, you change course to make good 030°T and increase speed to 14 knots. You rendezvous with another vessel and receive fresh supplies while off New Haven Harbor lighted whistle buoy "NH". What is the light characteristic of this buoy?
N a. _ . N b. _ _ Y c. . _ N d. . . 16706: At 0520, you take the following observations:
Point Judith Light 032°pgc
Point Judith Harbor of Refuge
Main Breakwater Center Light 308°pgc
What is the position of your 0520 fix?
N a. LAT 41°20.8'N, Long 71°30.3'W Y b. LAT 41°20.8'N, Long 71°29.7'W N c. LAT 41°20.6'N, Long 71°30.0'W N d. LAT 41°20.5'N, Long 71°29.8'W