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.
68: A position obtained by taking lines of position from one object at different times and advancing them to a common time is a(n) __________.
N a. dead-reckoning position N b. estimated position N c. fix Y d. running fix 89: The GHA of the first point of Aries is 315° and the GHA of a planet is 150°. What is the right ascension of the planet?
N a. 7 hours Y b. 11 hours N c. 19 hours N d. 23 hours 104: What should you apply to a fathometer reading to determine the depth of water?
N a. Subtract the draft of the vessel. Y b. Add the draft of the vessel. N c. Subtract the sea water correction . N d. Add the sea water correction. 138: The path that a vessel is expected to follow, represented on a chart by a line drawn from the point of departure to the point of arrival, is the __________.
N a. DR plot Y b. track line N c. heading N d. estimated course 175: On 5 July 1981, at 1200 zone time, you cross the 180th meridian steaming westward. What is your local time?
N a. It is 1200, 4 July. N b. It is 1200, 5 July. Y c. It is 1200, 6 July. N d. It is 2400, 6 July. 335: What is the geographic longitude of a body whose GHA is 232°27'?
Y a. 127°33'E N b. 52°27'E N c. 61°52'W N d. 61°52'E 338: The illustration shows the symbols used on radio facsimile weather charts. The symbol indicated at letter "N" represents __________. (D042NG )
N a. hail N b. freezing rain Y c. rain N d. snow 371: Which buoy may be odd numbered?
N a. Mid-channel buoy N b. Unlighted nun buoy Y c. Lighted green buoy N d. All of the above 594: Barometers are calibrated at a standard temperature of __________.
N a. 0°F Y b. 32°F N c. 60°F N d. 70°F 605: Which is NOT a side of the celestial navigational triangle?
N a. Co-latitude N b. Zenith distance Y c. Altitude N d. Co-declination 621: Navigational marks used for informational or regulatory purposes are __________.
N a. solid yellow Y b. white with orange geometric shapes N c. red and white vertically-striped N d. green and red horizontally-banded 627: You are on a coastwise voyage bound for Marcus Hook, PA. Your speed is 15 knots. You wish to use the flood tide to facilitate docking starboard side to, heading seaward. To have the most favorable tide throughout, you should time your arrival at the entrance to Delaware Bay __________.
N a. for 1 hour before flood begins N b. for 1 hour after flood begins Y c. for 3 hours after flood begins N d. for 1 hour before ebb begins 676: If you are caught in the left semicircle of a tropical storm, in the Southern Hemisphere, you should bring the wind __________.
N a. on the starboard quarter, hold course and make as much way as possible N b. 2 points on the port quarter, and make as much way as possible Y c. on the port bow, and make as much way as possible N d. dead ahead and heave to 676: If you are caught in the left semicircle of a tropical storm, in the Southern Hemisphere, you should bring the wind __________.
N a. on the starboard quarter, hold course and make as much way as possible N b. 2 points on the port quarter, and make as much way as possible Y c. on the port bow, and make as much way as possible N d. dead ahead and heave to 700: You are enroute to Savannah, GA, from Recife, Brazil. There is a strong N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.
N a. smoother seas and warmer water N b. long swells Y c. steeper waves, closer together N d. cirrus clouds 778: The navigable semicircle of a hurricane in the Northern Hemisphere is that area of the storm measured __________.
N a. from true north clockwise to 180°T N b. from true north counterclockwise to 180°T N c. from the bow counterclockwise to 180° relative Y d. from the direction of the storm's movement counterclockwise 180° 813: At the magnetic equator there is no induced magnetism in the vertical soft iron because __________.
N a. the lines of force cross the equator on a 0°-180° alignment N b. the quadrantal error is 0° Y c. there is no vertical component of the Earth's magnetic field N d. the intercardinal headings have less than 1° error 890: If several navigational lights are visible at the same time, each one may be positively identified by checking all of the following EXCEPT what against the Light List?
N a. Rhythm N b. Period Y c. Intensity N d. Color 962: Chart legends which indicate a conspicuous landmark are printed in __________.
N a. underlined letters N b. boldfaced print N c. italics Y d. capital letters 1020: The Light List shows that a navigational light has a nominal range of 6 miles and a height above water of 18 feet (5.5 meters). Your height of eye is 40 feet (12.2 meters) and the visibility is 27.0 miles. At which approximate range will you first sight the light?
N a. 5.6 miles N b. 6.4 miles Y c. 9.8 miles N d. 12.1 miles 1080: Information on northern right whales can be found in __________.
Y a. the Coast Pilot N b. HO 229 N c. the Nautical Almanac N d. Ship's Medicine Chest and Medical Aid at Sea 1145: The GHA of a star __________.
Y a. increases at a rate of approximately 15° per hour N b. increases at a rate of approximately 4° per hour N c. decreases at a rate of approximately 15° per hour N d. decreases at a rate of approximately 4° per hour 1162: A line connecting all possible positions of your vessel at any given time is a __________.
N a. longitude line N b. latitude line Y c. line of position N d. fix 1168: Which type of cloud is indicated by the number 4? (D039NG )
N a. Altocumulus N b. Cirrostratus N c. Cumulus Y d. Altostratus 1275: How is variation indicated on a small-scale nautical chart?
N a. Magnetic compass table N b. Magnetic meridians Y c. Isogonic lines N d. Variation is not indicated on small-scale nautical charts. 1288: Your vessel will be docking at Chester, PA, during the evening of 22 April 1983. The chart shows a depth of 20 feet (6.1 meters) at the pier. What will be the depth of water available at 2310 EST (ZD +5)?
N a. 19.2 feet (5.9 meters) N b. 20.8 feet (6.3 meters) Y c. 24.7 feet (7.5 meters) N d. 25.8 feet (7.9 meters). 1299: What will be the time (ZD +5) of the second high tide at Weymouth Fore River Bridge, MA, on 12 November 1983?
N a. 1639 N b. 1643 N c. 1647 Y d. 1650 1321: A lighthouse can be identified by its __________.
N a. painted color N b. light color and phase characteristic N c. type of structure Y d. All of the above 1438: In the Northern Hemisphere you are caught in the dangerous semicircle of a storm with plenty of sea room available. The best course of action is to bring the wind on the __________.
N a. port quarter and make as much headway as possible N b. starboard quarter and make as much headway as possible Y c. starboard bow and make as much headway as possible N d. port bow and make as much headway as possible 1485: The safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone is to __________.
Y a. take positive steps to avoid it if possible N b. batten down and prepare to ride out the storm N c. continue to navigate farther from the coast N d. always navigate towards the coast by the most direct route 1577: Yesterday your chronometer read 11h 59m 59s at 1200 GMT time tick. Today the chronometer reads 12h 00m 01s at the 1200 GMT tick. What is the chronometer rate?
N a. -1s N b. +1s N c. -2s Y d. +2s 1602: Most modern Loran-C receivers automatically detect secondary station blink which __________.
N a. indicates the station is transmitting normally N b. automatically shuts down the receiver Y c. triggers alarm indicators to warn the operator N d. causes the receiver to shift automatically to another Loran chain 1604: The Illustration shows the symbols used on radio facsimile weather charts. Which of these symbols indicates freezing rain? (D042NG )
N a. M N b. N N c. O Y d. P 1699: In the Northern Hemisphere, when the center of a high pressure system is due east of your position, you can expect winds from the __________.
N a. south to west Y b. south to east N c. north to west N d. north to east 1713: When a tornado moves over the water from land it is called a __________.
N a. tornado Y b. waterspout N c. hurricane N d. cyclone 1724: What is the first visible indication of the presence of a tropical cyclone or hurricane?
N a. Stratocumulus clouds or strange birds N b. Rain and increasing winds Y c. An exceptionally long swell N d. Dark clouds and the "bar" of the storm 1793: Which weather element cannot be measured accurately while on board a moving vessel?
N a. relative humidity N b. temperature Y c. true wind speed N d. atmospheric pressure 1803: The difference between the DR position and a fix, both of which have the same time, is caused by __________.
N a. variation N b. deviation Y c. current N d. leeway 1822: What is the relative bearing of an object broad on the port bow?
Y a. 315° N b. 330° N c. 345° N d. 360° 1832: Which magnetic compass corrector(s) can be set while the vessel is on a heading of magnetic northeast or magnetic southeast?
N a. Flinders bar N b. Heeling magnets N c. Fore-and-aft magnets Y d. Quadrantal spheres 1970: The azimuth angle of a sun sight is always measured from the __________.
N a. Greenwich meridian N b. prime vertical circle Y c. principal vertical circle N d. first point of Aries 2024: In the North Sea area, you sight a buoy with a quick light showing 3 flashes every 10 seconds. Which topmark in illustration D030NG would be fitted to this buoy under the IALA Buoyage Systems? (D030NG )
N a. A N b. B N c. C Y d. D 2028: Which stock number indicates an NGA (NIMA) chart designed for navigation and anchorage in a small waterway?
N a. WOAZC17 N b. LCORR5876 Y c. 15XHA15883 N d. PILOT55 2129: Diagram number D037NG represents a movable dam. If there is high water and the wickets are down so that there is an unobstructed navigable pass through the dam, what light(s) will be shown at B if the lock walls and piers are not awash?
N a. No lights Y b. Three red lights N c. Two red lights N d. One red light 2184: By convention, the south seeking ends of a compass' magnets are colored __________.
Y a. blue N b. red N c. white N d. black 2230: A nautical mile is a distance of approximately how much greater than or less than a statute mile?
N a. 1/4 less N b. 1/7 less N c. 1/4 greater Y d. 1/7 greater 2268: What condition exists at perigee?
N a. The Earth is farthest from the Sun. N b. The Earth, Sun, and Moon are in line. N c. The Earth, Sun, and Moon are at right angles. Y d. The Moon is closest to the Earth. 2274: A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. What action should be taken to remove this error during compass adjustment?
N a. If the red ends of the magnets are to port you should lower the athwartships tray. N b. If the blue ends of the magnets are to port, and the athwartships tray is at the top, you should reverse the magnets. N c. If the red ends of the magnet are aft, and the fore-and-aft tray is at the top, you should add some more magnets. Y d. If the red ends of the magnets are aft you should lower the fore-and-aft tray. 2363: As shown, the position labeled C was plotted because __________. (D051NG )
N a. the vessel's speed changed N b. the vessel's course changed form due North to due East Y c. running fixes are better estimates of true position than dead-reckoning positions N d. All of the above are correct 2364: The immediate surroundings of what constellation contain the most first magnitude stars?
N a. Libra N b. Cassiopeia N c. Pegasus Y d. Orion 2478: On 23 August 1981 you observe a back sight of the lower limb of the Sun. The sextant altitude (hs) is 116°42.8'. The height of eye is 56 feet and the index error is 2.0' on the arc. What is the observed altitude (Ho)?
Y a. 63°42.0' N b. 63°38.0' N c. 63°19.4' N d. 62°49.6' 2486: What is the equivalent of 23 min. 20 sec. in arc units?
N a. 16°40' N b. 12°32' N c. 9°28' Y d. 5°50' 2509: All persons or vessels within the lock area, including the lock approach channels, come under the authority of the __________.
N a. dockmaster N b. dock captain Y c. lockmaster N d. lock foreman 2594: At McAlpine L & D, normal upper pool elevation is 420.0 feet (130.8 meters) MSL, equal to 12.0 feet (3.7 meters) on the upper gage. The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet (22.1 meters) above normal pool. What is the clearance if the gage reads 10.6 feet (3.2 meters)?
N a. 84.6 feet (25.8 meters) N b. 83.2 feet (25.4 meters) Y c. 74.0 feet (22.6 meters) N d. 62.0 feet (18.9 meters) 2598: A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way?
N a. The vessel moving upstream against the current Y b. The vessel moving downstream with a following current N c. The vessel located more towards the channel centerline N d. The vessel with the least amount of maneuverability 2746: What is used to measure wind velocity?
N a. Psychrometer N b. Barometer N c. Wind sock Y d. Anemometer 2760: You are pushing a tow ahead, at high speed, near the right hand bank of a canal. The forces affecting your towboat and tow will tend to __________.
N a. push both the head of the tow and the stern of the towboat away from the right hand bank Y b. push the head of the tow away from, and pull the stern of the towboat into, the right hand bank N c. pull both the head of the tow and the stern of the towboat into the right hand bank N d. pull the head of the tow into, and push the stern of the towboat away from, the right hand bank 2980: What volume of the Coast Guard Light List is used for the Mississippi River system?
N a. I N b. II N c. IV Y d. V 3108: Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT __________.
N a. navigation status N b. ship's heading Y c. port of origin N d. time stamp 3127: Which of the following statements is TRUE regarding automatic identification systems (AIS) ?
N a. AIS cannot be used to make passing arrangements because the system is not capable of this type of ship-to-ship communications. N b. AIS cannot be used to make passing arrangements because the ship-to-ship text messaging feature is for emergency use only. Y c. AIS can be used to make passing arrangements via ship-to-ship text messaging but a vessel operator is not relieved from the requirement to sound whistle signals or make arrangements via bridge-to-bridge radiotelephone. N d. AIS can be used to make passing arrangements via ship-to-ship text massaging thus relieving a vessel operator from making such arrangements via bridge-to-bridge radiotelephone or signaling intent to pass via whistle signals.