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.
85: You are turning for 10 mph, approaching Angola, LA. Angola reports that the current at Red River Landing is estimated at 4.5 mph. Which of the following statements is TRUE?
Y a. You should expect to encounter vessels crossing the river at mile 300.5 AHP N b. You are making 14.5 mph over the ground. N c. You would expect to find a more favorable current near the broken red line in the river. N d. Hog Pt. Light and Hog Pt. Lower Light may be used as range lights when entering Shreves cut-off. 108: The horizontal clearance of the center span on the Baton Rouge RR and Highway 190 Bridge is __________.
N a. 443 N b. 500 Y c. 623 N d. 748 189: At 0645, Watch Hill Point (left tangent) bears 316.5°pgc at 2.75 miles. What was the speed made good between 0600 and 0645?
N a. 8.1 knots N b. 9.8 knots Y c. 10.3 knots N d. 11.4 knots 349: From your 0430 position, what is the course per standard magnetic compass to a position where Twenty-eight foot Shoal lighted buoy "TE" is abeam to port at 1 mile?
Y a. 101.5° N b. 098.0° N c. 086.0° N d. 082.5° 398: You depart LAT 32°16.6'N, LONG 68°28.0'W. What is the course and distance as calculated by Mercator sailing to a position at LAT 43°12.2'N, LONG 55°39.0'W?
Y a. 042.8°T, 896.2 miles N b. 049.1°T, 955.1 miles N c. 132.8°T, 896.2 miles N d. 136.6°T, 955.1 miles 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 419: At 0900, you take the following radar ranges:
Watch Hill Point 5.4 miles
Block Island Grace Point 8.3 miles
Which statement about this fix is TRUE?
N a. You are to the left of the track line. N b. The bottom in the area is sand and gravel. N c. You are governed by the Inland Rules. Y d. The fix is indeterminate. 440: By 1015, visibility has increased to 5.0 miles and you can see Fishers Island. Fishers Island has __________.
Y a. sparsely wooded hills and is fringed with shoals to the south N b. sheer cliffs rising from the sea to a high, flat plateau N c. barren, rocky hills with prominent sandy beaches N d. low and sandy beaches with salt ponds and marsh grass 447: You are encountering heavy weather. What action should you take based on your 1430 fix?
N a. Continue on the same course but increase speed. N b. Continue on the same course at the same speed. N c. Slow to 8.3 knots to compensate for the current. Y d. Alter course to the right, to pass well clear of Southwest Ledge 489: At 0728, Race Rock Light is bearing 282°T at 3.8 miles, and the closest point on Fishers Island is at a radar range of 2.1 miles. What speed have you been making since you changed course at 0705?
N a. 11.4 knots N b. 10.6 knots Y c. 9.9 knots N d. 9.2 knots 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 700: Which facility is located on the right descending bank at mile 363.6 AHP?
N a. River Cement Corps.. Y b. Vidalia Dock and Storage Co. N c. T.L. James N d. Bunge Corps.. 840: On 29 October , in DR position LAT 41°12.0'N, LONG 50°18.9'W, you take an ex-meridian observation of the Sun's lower limb, near upper transit. The chronometer time of the sight is 03h 21m 12s, and the chronometer error is 01m 50s slow. The sextant altitude (hs) is 34°54.2'. The index error is 2.0' on the arc, and your height of eye is 45 feet. What is the latitude at meridian transit?
N a. 41°12.0'N Y b. 41°16.0'N N c. 41°20.2'N N d. 41°23.6'N 994: At 0600 zone time, on 16 March , your DR position is LAT 20°10.0'N, LONG 81°30.0'W. You are steering course 300°T. The speed over the ground is 10 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1130 running fix? NP-0004
N a. LAT 20°28.5'N, LONG 82°12.6'W N b. LAT 20°32.0'N, LONG 82°16.4'W Y c. LAT 20°39.0'N, LONG 82°22.9'W N d. LAT 20°42.5'N, LONG 82°26.2'W 1110: On 19 November , your 0300 zone time DR position is LAT 19°23'N, LONG 151°37'E. You are on course 293°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0039
N a. LAT 19°38.5'N, LONG 150°41.6'E Y b. LAT 19°34.8'N, LONG 150°48.0'E N c. LAT 19°32.9'N, LONG 150°52.3'E N d. LAT 19°30.5'N, LONG 150°48.5'E 1133: The Helena Gage reads 9.4 feet. The high point on your towboat is 42 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 53.0 feet N b. 62.6 feet N c. 64.2 feet Y d. 68.0 feet 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 1289: The horizontal clearance of the center span on the Baton Rouge RR and Highway 190 Bridge is __________.
N a. 443 N b. 500 N c. 575 Y d. 623 1722: You estimate the current as 2.0 mph. What is the speed over the ground?
N a. 4.5 mph Y b. 5.5 mph N c. 7.5 mph N d. 9.5 mph 1747: As you pass under the Greenville Highway Bridge, you estimate the current as 3.5 mph. What is the speed over the ground, if your vessel is making turns for 9 mph?
N a. 14.5 mph N b. 13.5 mph Y c. 12.5 mph N d. 11.5 mph 1867: On 12 June , your 1845 DR position is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 162°T at a sextant altitude (hs) of 28°36.5'. The index error is 0.5'
on the arc, and the height of eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
N a. Gamma Virginis Y b. Iota Centauri N c. Spica N d. Mimosa 1917: On 14 January , your 1922 DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 054°T at an observed altitude (Ho) of 07°52.1'. The chronometer reads 03h 25m 43s, and is 03m 15s fast. What star did you observe?
N a. Elnath N b. Fomalhaut Y c. Pollux N d. Markab 2018: On 11 November , your 0200 zone time DR position is LAT 26°32'S, LONG 154°16'E. You are on course 058°T at a speed of 21 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Polaris, Regulus, Rigel N b. Jupiter, Spica, Canopus N c. Saturn, Peacock, Rigel Y d. Mars, Betelgeuse, Miaplacidus 2049: What is the length of the trip?
N a. 405.8 miles Y b. 904.0 miles N c. 1002.0 miles N d. 1136.8 miles 2160: On 17 April , your vessel's 1856 zone time DR position is LAT 22°35.0'N, LONG 63°15.0'W. At that time, a sextant observation of the star Sirius is made. The sextant altitude is 42°45.0' and the chronometer reads 10h 59m 27s.
The index error is 2.6' off the arc, and the chronometer error is 03m 01s fast. Your height of eye is determined to be 45 feet. What is the computed altitude (hc) and azimuth (Zn) for this sight using the assumed position?
N a. 42°40.0', 214.9°T N b. 42°40.0', 325.1°T Y c. 42°51.6', 214.9°T N d. 42°51.6', 325.1°T 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' 2289: You observe the lower limb of the Sun at a sextant altitude (hs) of 38°07.5' on 8 August . The index error is 5.2' off the arc. The height of eye is 72 feet (22 meters). What is the observed altitude (Ho)?
N a. 38°08.4' N b. 38°13.3' Y c. 38°19.2' N d. 38°23.4' 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 2402: You will enter waters governed by the International Rules when __________.
N a. you cross the territorial sea boundary line N b. enter the pilotage area N c. you cross the boundary of the contiguous zone Y d. Cape Henry Light bears 202°T 2686: While on a course of 034°pgc, a light bears 8° on the port bow at a distance of 8.8 miles. What course should you steer to pass 2.5 miles abeam of the light leaving it to port?
N a. 035°pgc Y b. 043°pgc N c. 051°pgc N d. 059°pgc 2878: Your vessel is steering 143°T at 16 knots. At 2147 a light bears 106°T, and at 2206 the same light bears 078°T. What will be your distance off abeam?
N a. 5.1 miles N b. 5.4 miles Y c. 5.9 miles N d. 6.5 miles 3067: From 1020, 3 March, to 1845, 5 March, your vessel steamed an observed distance of 845.6 miles. The average RPM was 78, and the pitch of the propeller was 20'03". What was the slip?
N a. -4% Y b. +4% N c. -8% N d. +8% 3253: You have steamed 925 miles at 13.5 knots, and consumed 181 tons of fuel. If you have 259 tons of usable fuel remaining, how far can you steam at 16 knots?
N a. 795 miles Y b. 942 miles N c. 1117 miles N d. 1409 miles 3287: While steaming at 16.5 knots, your vessel consumes 349 barrels of fuel oil per day. In order to reduce consumption to 189 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 12.1 knots Y b. 13.5 knots N c. 14.6 knots N d. 15.4 knots 3310: You have steamed 216 miles and consumed 19.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 315 miles?
Y a. 27.7 tons N b. 32.3 tons N c. 36.9 tons N d. 40.4 tons 3454: You wish to make good a course of 300°T while turning for an engine speed of 11 knots. The set is 350°T, and the drift is 2.1 knots. Which course should you steer?
N a. 278°T N b. 288°T Y c. 292°T N d. 308°T 3635: You desire to make good a true course of 236°. The variation is 8°E, magnetic compass deviation is 1°E, and gyrocompass error is 3°W. A south-southeasterly wind produces a 1° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?
Y a. 226°psc N b. 228°psc N c. 244°psc N d. 246°psc 11708: Your position is LAT 37°00.9'N, LONG 75°30.0'W. What is the course to steer per magnetic compass to arrive at LAT 36°59.0'N, LONG 75°48.5'W, if you are turning for 7.8 knots the current is 339°T at 1.3 knots, and a northwesterly wind is causing 3° of leeway?
Y a. 265°psc N b. 267°psc N c. 269°psc N d. 271°psc 12601: You are on course 062° per standard magnetic compass when you take the following bearings: Branford Reef Light 060°psc Stratford Point Light 272°psc New Haven Light 324°psc What is your position?
N a. LAT 41°07.1'N, LONG 72°53.4'W Y b. LAT 41°10.5'N, LONG 72°52.8'W N c. LAT 41°11.6'N, LONG 72°50.0'W N d. LAT 41°13.3'N, LONG 72°48.7'W 13007: Your 1600 position is LAT 41°08.0'N, LONG 72°44.8'W. You are making turns for 10 knots. What is your ETA at Twenty-Eight Foot Shoal Lighted Buoy "TE" (LAT 41°09.3'N LONG 72°30.5'W)?
N a. 1647 N b. 1651 N c. 1702 Y d. 1706 13805: What is the danger associated with anchoring your vessel within a 300 yard radius of Gardiners Point?
N a. An unusually strong current exists in this area. N b. The bottom is not suitable for holding the anchor. N c. Submerged pilings may exist in this area. Y d. Your anchor could become fouled on undetonated explosives. 14104: You are approaching Bonneville Lock and Dam. Which FM-radio channel should be used to communicate with the lockmaster?
N a. 13 Y b. 14 N c. 15 N d. 16 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 15007: What course should you steer using the standard magnetic compass (psc) to make good the course of 192°pgc?
N a. 188°psc N b. 195°psc Y c. 203°psc N d. 205°psc 15169: At 2123, your position is LAT 37°20.0'N, LONG 76°03.0'W. What is your distance offshore of Savage Neck?
Y a. 1.7 miles N b. 2.5 miles N c. 3.6 miles N d. 10.9 miles 15317: If you make good a speed of 6.0 knots from your 1810 position, what is your ETA at Chesapeake Channel Lighted Bell Buoy "2C"?
Y a. 1833 N b. 1845 N c. 1855 N d. 1900 15640: At which point in the voyage is your vessel bound by the International Rules of the Roads (COLREGS)?
N a. At the mouth of New London Harbor Y b. Upon entering Block Island Sound N c. After crossing the line of the Territorial Sea N d. After passing between Montauk Point and Lewis Point on Block Island 15720: The red sector of New London Harbor Light covers from __________.
N a. 040° - 310° Y b. 000° - 041° N c. 208° - 220° N d. 204° - 239° 15965: If the visibility is 5 miles, what is the luminous range of New Point Comfort Spit Light "4"?
N a. 0.5 mile Y b. 3.4 miles N c. 4.8 miles N d. 5.0 miles 16068: From your 2118 position, you proceed to Norfolk, VA, a distance of approximately 26.0 miles. To arrive at Norfolk by 0200 the next day, what is the minimum speed to make good from your 2118 position to arrive at this time?
N a. 5.0 knots N b. 5.3 knots N c. 5.8 knots Y d. 5.5 knots 16267: When Cape Henry Light is abeam, what is the approximate distance to Yorktown, VA?
Y a. 34 miles N b. 42 miles N c. 55 miles N d. 58 miles 16460: At 0250, Great Machipongo Inlet Light "5" (37°21.8'N,
75°43.7'W) bears 279°pgc. At 0320, the light bears 320°
pgc. If you are making good 6.5 knots, what is the position of your 0320 running fix?
N a. LAT 37°17.95'N, LONG 75°39.95'W N b. LAT 37°18.00'N, LONG 75°39.75'W N c. LAT 37°18.10'N, LONG 75°39.30'W Y d. LAT 37°18.10'N, LONG 75°39.55'W 16519: As you head toward Great Salt Pond, visibility is unlimited. At what time will you lose sight of Montauk Pt.
Light?
N a. 0905 N b. 0928 N c. 0950 Y d. It will remain visible to Great Salt Pond.