Assessment Test

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1. C2 - The navigational triangle uses parts of two systems of coordinates, one of which is the horizon system and the other is the __________.


2. C2 - The location of the observer is at 20˚ North and the sun's declination is 23.5˚ North, what will be the bearing of the sun during meridian passage?


3. C2 - The dividing meridian between zone descriptions -10 and -11 is __________.


4. C2 - The constellation that contains the pointer stars is __________.


5. C2 - The azimuth angle of a sun sight is always measured from the __________.


6. C2 - The altitude at LAN may be observed by starting several minutes in advance and continuing until a maximum altitude occurs. This procedure should not be used __________.


7. C2 - Superior conjunction occurs when __________.


8. C2 - Planetary aberration is due, in part, to __________.


9. C2 - Inferior conjunction is possible for __________.


10. C2 - In the horizon system of coordinates what is equivalent to the poles on the Earth?


11. C2 - In the celestial equator system of coordinates what is equivalent to the longitude of the Earth system of coordinates?


12. C2 - In the celestial equator system of coordinates what is equivalent to the colatitude of the Earth system of coordinates?


13. C2 - In order for a star to be used for a sight at lower transit, the star must __________.


14. C2 - In modern fathometers the sonic or ultrasonic sound waves are produced electrically by means of a(n) __________.


15. C2 - In low latitudes, the full Moon will always rise at about __________.


16. C2 - In general, how many radio channels will an automatic identification system (AIS) operate?


17. C2 - If the observer is at the Arctic Circle and the sun is at summer solstice, what will be the bearing of the body during meridian passage?


18. C2 - If the electronic chart is part of an ECDIS, what minimum data required by IMO/IHO it should except for display?


19. C2 - If a sound signal is emitted from the oscillator of a fathometer, and two seconds elapse before the returning signal is picked up, what depth of water is indicated?


20. C2 - Concerning a celestial observation, the azimuth angle is measured from the principal vertical circle to the __________.


21. C2 - At meridian transit, the diagram used by a navigator to illustrate the angles involved is based on the __________.


22. C2 - At evening stars, the first stars that should be observed are those with an azimuth in what quadrant?


23. C2 - AIS position information accuracy is only as good as:


24. C2 - AIS is capable of handling over _____ reports/minute and updates every 2 seconds.


25. C2 - A vertex of the navigational triangle is NOT located at the __________.


26. C2 - A time diagram is a diagram of the celestial sphere as observed from above the __________.


27. C2 - A pilot chart does NOT contain information about __________.


28. C2 - A line of position from a celestial observation is a segment of a __________.


29. C2 - A group of stars which appear close together and form a striking configuration such as a person or animal is a __________.


30. C2 - A Doppler speed log indicates speed through the water __________.


31. C2 - A chart position enclosed by a semicircle is a(n) __________.


32. C2 - You are in British waters on course 090°T when you sight a flashing white light with a characteristic of VQ(9)10s. You immediately change course to 030°T. After one hour, you sight another flashing white light with the characteristic of VQ. What bouy indicates?


33. C2 - What is the geographic longitude of a body whose GHA is 215°15'?


34. C2 - At 2150, your position is LAT 36°57.2'N, LONG 76°01.3'W. In this position on the chart, you note a light magenta line running in a direction of 030°T. What limits does this line indicates of?


35. C2 - A great circle crosses the equator at 17°W. It will also cross the equator at what other longitude?


36. C2 - A position on the Earth has a longitude of 74°10'E. Its celestial counterpart would have a __________.


37. C2 - If the Sun's observed altitude is 27°12', the zenith distance is __________.


38. C2 - The latitude of the upper vertex of a great circle is 36°N. What is the latitude of the lower vertex?


39. C2 - The line of position should be plotted as a circle around the GP of the body when the Ho exceeds what minimum value?


40. C2 - The LMT of LAN is 1210. Your longitude is 70°30'E. Which time would you use to enter the Nautical Almanac to determine the declination of the Sun at LAN?


41. C2 - The parallel of latitude at 66°33'N is the __________.


42. C2 - You are planning a voyage by great circle from Reykjavik (LAT 63°30'N, LONG 24°00'W) to the Azores (LAT 39°30'N, LONG 29°00'W). Which statement is TRUE? (Use gnomonic tracking chart WOXZC 5274)


43. C2 - In planning a North Pacific voyage, you wish to steam the minimum distance from LAT 48°30'N, LONG 124°45'W to LAT 44°00'N, LONG 150°00'E, while remaining south of 51°N latitude. Which track meets these requirements? (Use gnomonic tracking chart WOXZC 5270)


44. C2 - On a North Pacific voyage, you wish to sail the shortest distance from LAT 46°05'N, LONG 124°00'W to LAT 44°00'N, LONG 150°00'E. You do not want to exceed 50°N latitude due to anticipated fog conditions. Which voyage plot meets these requirements? (Use gnomonic tracking chart WOXZC 5270)


45. C2 - On which voyage would a great circle track be significantly shorter than a rhumb line track? (Use gnomonic tracking chart WOXZC 5274)


46. C2 - The navigator aboard a ship at approximately 165°E longitude observes the Sun at ZT 14-25-04 on 21 September. What is the GMT and Greenwich date of the observation?


47. C2 - Your ARPA has automatic speed inputs from the log. Due to currents, the log is indicating a faster speed than the speed over the ground. What should you expect under these circumstances?


48. C2 - You plot a fix using three lines of position and find they intersect in a triangle. How should you plot the position of the vessel?


49. C2 - You determined your vessel's position by taking a range and bearing to a buoy. How will be your position be plotted?


50. C2 - You are running parallel to the coast and take a running fix using bearings of the same object. If you are making less speed than used for the running fix, what will you be in relation to the position indicated by the fix?


51. C2 - You are running parallel to the coast and plotting running fixes using bearings of the same object. You are making more speed than assumed for the running fix. What will you be in relation to the position indicated by the fix?


52. C2 - With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?


53. C2 - With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?


54. C2 - With respect to automatic identification systems (AIS) which of the following information is broadcast every one to ten seconds?


55. C2 - With regard to GPS, when does a civilian receiver may be capable of achieving the same accuracy as a military receiver?


56. C2 - Which of the following when subtracted to 90 degrees will give the radius of almucantar?


57. C2 - Where in the sextant error when the pivot of the Index bar is not at the center of the arc?


58. C2 - Where do you write the note that the chart has been corrected?


59. C2 - When using an Electronic Plotting Aid (EPA), what should you consider in order to evaluate the information displayed?


60. C2 - When using a recording depth finder in the open ocean, what phenomena is most likely to produce a continuous trace that may not be from the actual ocean bottom?


61. C2 - When the time is based on the movement of the visible Sun along the ecliptic the time is known as __________.


62. C2 - What should you apply to a fathometer reading to determine the depth of water?


63. C2 - What previous hours does ECDIS must have the capability to preserve the record of the voyage track?


64. C2 - What is the typical nominal operating range of automatic identification systems (AIS) at sea?


65. C2 - What is the graphic record produced by the recording fathometer?


66. C2 - What is provided in the highest level of commercial navigational accuracy?


67. C2 - What is called as the database resulting from (1) the transformation of the electronic navigational chart (ENC) by ECDIS for appropriate use, (2) the updates to the ENC by appropriate means, and (3) the additional data added by the mariner?


68. C2 - What does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?


69. C2 - What all echo-sounders can measure?


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