Assessment Test


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1. C1 - Where does a polyconic projection is based on?

 

2. C1 - What is a known position obtained by applying only your vessel's course and speed?

 

3. C1 - When is the rhumb line distance the same as the great circle distance?

 

4. C1 - Proceeding from seaward for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding __________.

 

5. C1 - You are anchored in the Aleutian Island chain and receive word that a tsunami is expected to strike the islands in six hours. What is the safest action?

 

6. C1 - What benefit is a weather bulletin to a mariner?

 

7. C1 - When navigating in high latitudes and using a chart based on a Lambert conformal projection, __________.

 

8. C1 - Weather information provided by the National Weather Service (NWS) advisories should be used along with __________.

 

9. C1 - You are steaming west in the South Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, the center of low pressure lies __________.

 

10. C1 - "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding __________.

 

11. C1 - The LMT of sunrise on the standard meridian is 0552. Your longitude is 99°15'E. What is your ZT of sunrise?

 

12. C1 - The upper vertex of a great circle track is in LONG 156°00'E. Sailing eastward, the great circle track will cross the equator in LONG __________.

 

13. C1 - You are on course 061°T. To check the longitude of your vessel you should observe a celestial body on which bearing?

 

14. C1 - You are on course 138°T. To check the latitude of your vessel you should observe a celestial body on which bearing?

 

15. C1 - You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?

 

16. C1 - You take a bearing of 313° and 076° of two objects. Which bearing of a third object will give the best fix?

 

17. C1 - You wish to measure the distance on a Mercator chart between a point in latitude 43°30'N and a point in latitude 40°30'N. To measure 30 miles at a time, you should set the points of the dividers at __________.

 

18. C1 - Your longitude is 179°59'W. The LMT at this longitude is 23h 56m of the 4th day of the month. Six minutes later your position is 179°59'E longitude. Your LMT and date is now __________.

 

19. C1 - You are steering 257°T, and a light is picked up dead ahead at a distance of 13.3 miles at 2016H. You change course to pass the light 4 miles off abeam to starboard. If you are making 18.5 knots, what is your ETA at the position 4 miles off the light?

 

20. C1 - You are steering 349°T, and a light is picked up dead ahead at a distance of 17.2 miles at 2122H. You change course to pass the light 4.5 miles off abeam to port. If you are making 19.5 knots, what is your ETA at the position 4.5 miles off the light?

 

21. C1 - At 0915 zone time, on 11-May, you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD –9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 19.5 knots. The distance is 4,276 miles. What is your estimated zone time of arrival at Seattle?

 

22. C1 - At 1337 Z on July 17, in DR position LAT 30° 56.8' S, LONG 039° 36.5' W; you observe amplitude of the Moon. The upper limb of the moon is on the visible horizon, bearing 263.0°psc. The variation is 20°W. What is the deviation?

 

23. C1 - At 1400 zone time, on 11 April, your DR position is LAT 25°40'N, LONG 91°00'W. You are steering 180°T at a speed of 10.0 knots. What is your zone time of sunset?

 

24. C1 - On 13 November your 1030 ZT DR position is LAT 19°03'S, LONG 6°34'E. You are on course 164°T, speed 12 knots. Determine your 1200 position using the following observations of the Sun.

 

25. C1 - On 15 July your vessel is enroute from Portland, OR, to Singapore, Malaysia. You are steering course 243°T and making a speed of 16 knots. Your 1845 zone time DR is LAT 27°42.0' N, LONG 167°02.0' E. You observed 3 celestial bodies. Determine the latitude and longitude of your 1945 running fix.

 

26. C1 - You are on course 006°T, speed 16.6 knots. At 0516H you see a light bearing 008°T at a range of 10.2. If you change course at 0528H to leave the light abeam to port at 1.0 mile, at what time will the light be abeam?

 

27. C1 - You are on course 035°T, speed 18.3 knots. At 0719H you see a buoy bearing 036°T at a range of 4.1. If you change course at 0725H to leave the buoy abeam to port at 1.0 mile, at what time will the buoy be abeam?

 

28. C1 - You are on course 061°T, at a speed of 12.4 knots. At 0839H you see a rock bearing 059°T at a range of 4.4 miles. If you change course at 0845H to leave the rock abeam to starboard at 1.5 mile, at what time will the rock be abeam?

 

29. C1 - You are on course 079°T, speed 11.2 knots. At 0904H you see a daymark bearing 078°T at a range of 4.6. If you change course at 0910 to leave the daymark abeam to starboard at 0.5 mile, at what time will the daymark be abeam?

 

30. C1 - You are on course 086°T, speed 11.7 knots. At 1013 you see a buoy bearing 088°T at a range of 4.8 miles. If you change course at 1019H to leave the buoy abeam to port at 1.0 mile, at what time will the buoy be abeam?

 

31. C1 - You are planning a voyage from LAT 48°30'N, LONG 125°00'W to Korea via LAT 48°30'N, LONG 153°00'E. Which of the following track lines would you select for the safest and most direct route? (Use gnomonic tracking chart WOXZC 5270)

 

32. C1 - You are steering 019°T, and a light is picked up dead ahead at a distance of 11.6 miles at 0216H. You change course to pass the light 3 miles off abeam to port. If you are making 14 knots, what is your ETA at the position 3 miles off the light?

 

33. C1 - You are steering 031°T, and a light is picked up dead ahead at a distance of 12.7 miles at 0017. You change course to pass the light 3.5 miles off abeam to starboard. If you are making 11 knots, what is your ETA at the position 3.5 miles off the light?

 

34. C1 - You are steering 078°T, and a light is picked up dead ahead at a distance of 15.6 miles at 2316H. You change course to pass the light 4.5 miles off abeam to port. If you are making 17 knots, what is your ETA at the position 4.5 miles off the light?

 

35. C1 - You are steering 115°T, and a light is picked up dead ahead at a distance of 16.7 miles at 0522H. You change course to pass the light 3.5 miles off abeam to port. If you are making 12 knots, what is your ETA at the position 3.5 miles off the light?

 

36. C1 - You are steering 173°T, and a light is picked up dead ahead at a distance of 13.9 miles at 0054. You change course to pass the light 4.5 miles off abeam to port. If you are making 21 knots, what is your ETA at the position 4.5 miles off the light?

 

37. C1 - You are steering 202°T, and a light is picked up dead ahead at a distance of 14.6 miles at 2234H. You change course to pass the light 5 miles off abeam to starboard. If you are making 21 knots, what is your ETA at the position 5 miles off the light?

 

38. C1 - You are steering 231°T, a light is picked up dead ahead at a distance of 12.3 miles at 0338H. You change course to pass the light 4 miles off abeam to starboard. If you are making 16.5 knots, what is your ETA at the position 4 miles off the light?

 

39. C1 - You are steering 246°T, and a light is picked up dead ahead at a distance of 14 miles at 1037H. You change course to pass the light 2.5 miles off abeam to port. If you are making 12 knots, what is your ETA at the position 2.5 miles off the light?

 

40. You are plotting a running fix. The LOP to be run forward is an arc from a radar range, what technique should be used?

 
 

41. You are using a radar in which your own ship is shown at the center, and the heading flash always points to 0 degrees. If bearings are measured in relation to the flash, what type of bearings are produced?

 
 

42. An icebreaker is assisting a vessel through an ice field. What will it signify if she would display a visual signal consisting of the code letter M (Mike)?

 
 

43. At 0530 zone time, on 20 December, you depart Cape Town (ZD 1). You are bound for New York (ZD +5), and you estimate your speed of advance at 25 knots. The distance is 6,762 miles. What is your estimated zone time of arrival at New York?

 
 

44. Generally speaking, what kind of weather a ship steaming across the North Pacific from Japan to Seattle will likely to experience?

 
 

45. On an Atlantic Ocean voyage from New York to Durban, South Africa, what ocean current you should expect the Agulhas Current to strongly present?

 
 

46. What are the two most effective generating forces of surface ocean currents?

 
 

47. What is the principal danger from ice collecting on a vessel?

 
 

48. Where does the major ocean currents tend to flow in the Northern Hemisphere?

 
 

49. Which of the following describes why topside icing, which is usually offcenter, decreases vessel stability?

 
 

50. You are plotting a running fix in an area where there is a determinable current. How should this current be treated in determining the position?

 
 

51. Your vessel is at the equator at midnight on 1 January, and a star is observed rising. At what time will this same star rise on 1 February, assuming your vessels location is still at the equator?

 
 

52. It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at least every __________.

 
 

53. How long would a steady wind need to blow in order to create a wind driven current?

 
 

54. Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours. You should __________.

 
 

55. Under the IALAA and B Buoyage Systems, a buoy with alternating red and white vertical stripes indicates __________.

 
 

56. The safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone is to __________.

 
 

57. The navigable semicircle of a typhoon in the Southern Hemisphere is the area

 
 

58. In the IALA Maritime Buoyage System, a red and white verticallystriped buoy is used as a(n) __________.

 
 

59. Under the IALA Buoyage Systems, safe water marks may show a __________.

 
 

60. If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position, what winds can you expect in the Northern Hemisphere?

 
 

61. You are steering a southerly course, and you note that the chart predicts an easterly current. Without considering wind, how may you allow for the set?

 
 

62. You are in the Northern Hemisphere and a tropical wave is located 200 miles due west of your position. Where will the wave be located 24 hours later?

 
 

63. On 5 July, at 1200 zone time, you cross the 180th meridian steaming westward. What is your local time?

 
 

64. On March 17, at 0500 zone time, you cross the 180th meridian steaming eastward to west longitude. What is your local time?

 
 

65. You are running parallel to the coast and estimate that the current is against you. In plotting a running fix using bearings from the same object on the coast, the greatest safety margin from inshore dangers will result if what speed is used to determine the fix?

 
 

66. In which country would you expect the channels to be marked with the IALAB Buoyage System?

 
 

67. The IALA Buoyage Systems do NOT apply to __________.

 
 

68. Under the IALA cardinal system, a mark with a quick white light showing 6 flashes followed by one long flash indicates that the safest water is on the __________.

 
 

69. Under the IALAB Buoyage System, a conical buoy will be __________.

 
 

70. You have determined that you are in the right semicircle of a tropical cyclone in the Northern Hemisphere. What action should you take to avoid the storm?

 
 

71. IN REGION A of the IALA Buoyage System, when entering from seaward, the starboard side of a channel would be marked by a __________.

 
 

72. Under the IALAA Buoyage system, a buoy marking the starboard side of the channel when approaching from seaward may have a __________.

 
 

73. You are steaming in the open ocean of the North Pacific between the Aleutian Chain and Hawaii. A warning broadcast indicates that an earthquake has occurred in the Aleutians and has generated a tsunami that is predicted to hit Hawaii. What action is necessary for the ships safety?

 
 

74. If a hurricane several hundred miles away is moving in your general direction your barometer would __________.

 
 

75. If it is impossible to avoid a hurricane in the Northern Hemisphere, the most favorable place to be when the storm passes is in __________.

 
 

76. You can follow the approach of a dangerous cyclonic storm by inspecting __________.

 
 

77. C1 - At 0530 zone time, on 20 December, you depart Cape Town (ZD -1). You are bound for New York (ZD +5), and you estimate your speed of advance at 25 knots. The distance is 6,762 miles. What is your estimated zone time of arrival at New York?

 

78. C1 - In the Northern Hemisphere, if your vessel is in a hurricane's navigable semicircle, where should it be positioned with the wind?

 

79. C1 - Temperature and moisture characteristics are modified in a warm or cold air mass due to what?

 

80. C1 - What enables you to estimate the bearing of a storm's center?

 

81. C1 - Where is the center of low pressure located when an observer in the Northern Hemisphere experiences a northeast wind according to Buys Ballot's law?

 

82. C1 - You are steaming eastward in the North Atlantic in an extratropical cyclonic storm and the wind is dead ahead. According to the law of Buys Ballot, where does the center of the low pressure lies?

 

83. C1 - What should be a dead reckoning (DR) plot?

 

84. C1 - Where is a gnomonic projection is based on?

 

85. C1 - Other than the equator, what is a parallel of latitude?

 


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