u.s.c.g. merchant marine exam mate less than 500-1600 gross … · 2019-08-29 · q138-navigation...

National Maritime Center Serving Our Nation’s Mariners

U.S.C.G. Merchant Marine Exam

Mate Less than 500-1600 Gross Registered Tons

Q138-Navigation General-Near Coastal

(Sample Examination)

of 18 Q138-Navigation General-Near Coastal

8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2

Choose the best answer to the following Multiple Choice questions.

1. Your ship is entering port from sea, and you sight a pair of range lights. When in line, they bear 315° per standard magnetic compass. The chart shows that the range bearing is 312°T, and that variation is 6°W. What is the deviation of your compass at the time of the sighting?

• (A) 3°E o (B) 3°W o (C) 9°E o (D) 9°W

If choice A is selected set score to 1.

2. You are in a buoyed channel at night and pass a lighted buoy with an irregular characteristic. Who should you report this to?

o (A) The Corps of Engineers o (B) The National Ocean Service o (C) The harbor master • (D) The Coast Guard

If choice D is selected set score to 1.

3. You are on course 355°T and take a relative bearing of a lighthouse of 275°. What is the true bearing of the lighthouse?

• (A) 270° o (B) 085° o (C) 080° o (D) 280°


4. Your vessel is on course 270°T, speed 10 knots. The apparent wind is from 10° off the port bow, speed 30 knots. From which direction is the true wind?

o (A) 345°T o (B) 165°T • (C) 255°T o (D) 075°T

If choice C is selected set score to 1.


8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 5. Which is a weekly publication advising mariners of important matters affecting navigational safety?

o (A) Light List • (B) Notice to Mariners o (C) Sailing Directions o (D) Coast Pilot

If choice B is selected set score to 1.

6. If you are the Master of a towing vessel who’s only working radar no longer functions, what must you do?

o (A) Moor the vessel until it is repaired. o (B) Notify the Officer in Charge of Marine Inspection (OCMI) if you cannot repair it within 48

hours. • (C) Notify the Captain of the Port (COTP) if you cannot repair it within 96 hours. o (D) Anchor the vessel until it is repaired.


7. Which list of clouds is in sequence, from highest to lowest in the sky?

o (A) Altostratus, cirrostratus, stratus o (B) Altostratus, stratus, cirrostratus • (C) Cirrostratus, altostratus, stratus o (D) Stratus, cirrostratus, altostratus


8. On which of the following does an automatic identification system (AIS) transponder transmit and receive information?

o (A) UHF L-band • (B) VHF maritime band o (C) 10 cm, S-band radar o (D) 3 cm, X-band radar


9. What do red sectors of navigation lights warn mariners of?

o (A) Floating debris o (B) Recently sunken vessels • (C) Shoals or nearby land o (D) Heavily trafficked areas



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 10. While taking weather observations, you determine that the wind is coming from the west. In the

weather log, how would you record the wind direction?

o (A) 000° o (B) 090° o (C) 180° • (D) 270°


11. What is a characteristic of cardinal marks?

o (A) Square or triangular topmarks o (B) Number-letter combinations for identification • (C) Light rhythms indicating directional orientation o (D) Vertical stripes


12. Which is TRUE as the temperature of an air mass decreases?

o (A) The absolute humidity decreases • (B) The relative humidity increases o (C) The dew point rises o (D) The specific humidity decreases


13. ECDIS must give an alarm for which of the following cases?

o (A) If the ship, within a specified time set by the watch officer, is going to cross the boundary of a prohibited area

o (B) When the specified limit for deviation from the planned route is exceeded o (C) If the ship, within a specified time set by the watch officer, is going to cross a safety contour • (D) All of the above


14. Which is TRUE of an aneroid barometer on a vessel?

o (A) It should be mounted in the passenger compartment o (B) It should be protected by a collision bulkhead • (C) It should be permanently mounted o (D) It should located in an air-conditioned area



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 15. You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?

• (A) 079° o (B) 151° o (C) 176° o (D) 292°


16. While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's fog horn 3 seconds after the signal was sounded. What is the distance to the shore?

• (A) 550 yards o (B) 872 yards o (C) 1100 yards o (D) 792 yards


17. What does a barometer measure?

o (A) Dew point o (B) Relative humidity • (C) Atmospheric pressure o (D) Temperature


18. In most cases, the direction of the apparent wind lies between the bow and which reference point?

o (A) The true north o (B) The beam on the windward side o (C) The beam on the lee side • (D) The direction of the true wind


19. You are underway in a vessel with a draft of 7.0 feet (2.1 meters). The charted depth for your position is 9 fathoms. You compute the height of tide to be +3.0 feet (0.9 meters). You determine the depth of the water beneath your keel to be __________.

o (A) 32 feet (9.8 meters) o (B) 64 feet (19.6 meters) o (C) 41 feet (12.6 meters) • (D) 50 feet (15.3 meters)



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 20. Which is the reference datum used in determining the heights of land features on most charts?

o (A) Half-tide level • (B) Mean high water o (C) Mean sea level o (D) Mean low water


21. The velocity of the apparent wind can be more than the true wind, and come from the same direction, if certain conditions are present. One condition is that the __________.

o (A) ship's speed must be less than the true wind velocity • (B) true wind must be from dead ahead o (C) true wind velocity must be faster than the ship's speed o (D) true wind must be from dead astern


22. Which is TRUE of Monsoons?

o (A) They are light, variable winds with little or no humidity o (B) They are strong, cyclonic winds that change direction with the passage of an extreme low

pressure system • (C) They are steady winds that reverse direction semiannually o (D) They are strong, gusty winds that blow from the same general direction all year


23. In illustration D044NG below, what type of buoy is indicated by the letter A?

o (A) Spar o (B) Nun o (C) Pillar • (D) Can


24. 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?

o (A) East to northeast • (B) North to northwest o (C) South to southeast o (D) East to southeast



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 25. The four standard light colors used for lighted aids to navigation are red, green, white, and

__________.

• (A) yellow o (B) orange o (C) purple o (D) blue


26. An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?

• (A) Diamond with a cross o (B) Circle o (C) Square o (D) Open-faced diamond


27. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.

o (A) tide level • (B) high water o (C) low water o (D) lower low water


28. When should a navigator rely on the position of floating aids to navigation?

o (A) During calm weather only • (B) Only when fixed aids are not available o (C) During daylight only o (D) Only when inside a harbor


29. Your ship is proceeding on course 320°T at a speed of 25 knots. The apparent wind is from 30° off the starboard bow, speed 32 knots. What is the relative direction, true direction and speed of the true wind?

• (A) Relative 80°, true 040°T, 16.2 knots o (B) Relative 60°, true 040°T, 18.6 knots o (C) Relative 80°, true 060°T, 15.2 knots o (D) Relative 40°, true 080°T, 16.4 knots



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 30. Tropical storms and hurricanes are most likely to form in the Southern hemisphere during which

months?

• (A) January through March o (B) April through May o (C) September through November o (D) June through August


31. The Light List indicates that a light has a nominal range of 14 miles and is 26 feet high. If the visibility is 14 miles and your height of eye is 20 feet, at which approximate distance will you sight the light?

o (A) 7.5 miles • (B) 11.2 miles o (C) 14.0 miles o (D) 18.1 miles


32. The chart indicates the variation was 3°45'W in 1988, and the annual change is increasing 6'. If you use the chart in 1991 how much variation should you apply?

o (A) 3°27'W o (B) 3°27'E • (C) 4°03'W o (D) 4°03'E


33. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which of the following is TRUE?

• (A) You should leave the buoy on your port hand. o (B) This buoy marks the end of the ICW in that geographic area. o (C) The yellow square is in error and it should be a yellow triangle. o (D) The yellow is retro-reflective material used to assist in sighting the buoy at night.


34. When the moon is new or full, which type of tides occur?

o (A) Diurnal o (B) Neap • (C) Spring o (D) Apogean



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 35. When your vessel is on the storm track but behind the storm's center the __________.

o (A) barometer rises o (B) wind speed decreases o (C) wind direction remains steady • (D) All of the above


36. What is the length of a nautical mile?

o (A) 2,000 yards • (B) 6,076 feet o (C) 5,280 feet o (D) 1,800 meters


37. Which is the difference between the DR position and a fix, both of which have the same time?

o (A) Deviation • (B) Current o (C) Leeway o (D) Variation


38. What is the name of the region of high pressure extending around the Earth at about 35°N latitude?

• (A) The horse latitudes o (B) The doldrums o (C) The prevailing westerlies o (D) The troposphere


39. The depth of water on a chart is indicated as 23 meters. What does that depth convert to?

o (A) 11.5 fathoms • (B) 12.6 fathoms o (C) 69.0 feet o (D) 78.6 feet



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 40. In the Northern Hemisphere how do the major ocean currents tend to flow?

o (A) Clockwise or counterclockwise depending on whether it is warm or cold current • (B) Clockwise around the North Atlantic and North Pacific Oceans o (C) Counterclockwise except in the Gulf Stream o (D) Counterclockwise around the North Atlantic and North Pacific Oceans


41. When cold air displaces warm air you have which type of front?

• (A) A cold front o (B) A warm front o (C) An occluded front o (D) A stationary front


42. A chart position enclosed by a semi-circle is a(n) __________.

o (A) fix • (B) dead reckoning position o (C) running fix o (D) estimated position


43. Which of the symbols shown in illustration D018NG below represents an occluded front?

o (A) A o (B) B o (C) C • (D) D


44. Buoys which mark dredging areas are painted which color?

o (A) Black • (B) Yellow o (C) Red o (D) Green



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 45. You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane

bears 120°T, 110 miles from your position. The hurricane is moving towards 285°T at 25 knots. What course should you steer at 12 knots to have the maximum CPA?

o (A) 332° o (B) 339° • (C) 346° o (D) 357°


46. Which causes the Earth's irregular heating?

o (A) The geography o (B) The time of day o (C) The seasons • (D) All of the above


47. Your vessel is on a course of 221°T at 15 knots. At 0319 a light bears 198.5°T, and at 0353 the light bears 176°T. At what time and distance off will your vessel be when abeam of the light?

o (A) 0427, 7.4 miles o (B) 0410, 5.2 miles • (C) 0417, 6.0 miles o (D) 0407, 4.3 miles


48. Which may cause above-normal tides near the center of a hurricane?

• (A) Storm surge o (B) Torrential rains o (C) The jet stream o (D) High barometric pressure


49. You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 042° at 105 miles from you. What is the course to steer at 10 knots to intercept vessel A?

o (A) 063° o (B) 068° o (C) 073° • (D) 079°



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 50. Under the U.S. Aids to Navigation System, which category is a yellow buoy?

• (A) A special purpose mark o (B) A junction buoy o (C) A cardinal mark o (D) A safe water buoy


51. Which information is NOT required to be posted in or near the wheelhouse?

• (A) A diagram of advance and transfer for turns of 30°, 60°, 90° and 120° at full speed with maximum rudder and constant power

o (B) For vessels with a fixed propeller, a table of shaft RPMs for a representative range of speeds o (C) Operating instructions for change-over procedures for remote steering gear systems o (D) Stopping time and distance from full speed while maintaining course with minimum rudder


52. Which of the following is a standard correction applied to the reading of an aneroid barometer?

o (A) Wind speed o (B) Temperature o (C) Latitude • (D) Height


53. By what means are indications of the master gyrocompass sent to remote repeaters?

o (A) by follow-up system o (B) by phantom element o (C) by azimuth motor • (D) by transmitter


54. What is the standard atmospheric pressure as measured in inches of mercury?

• (A) 29.92 o (B) 500.0 o (C) 760.0 o (D) 1013.2



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 55. Which statement is TRUE concerning a Mercator projection?

• (A) The length of the meridians is increased to provide for equal expansion in all directions. o (B) The mileage between the meridians is increased as the latitude increases. o (C) Degrees of longitude decrease in length as latitude increases. o (D) The length of the meridians remains constant at all latitudes


56. Isobars on a weather map are useful in predicting which element of the weather?

o (A) The relative humidity • (B) The wind velocity o (C) The temperature o (D) The dew point


57. Which is a characteristic of a port side daymark?

o (A) Black and white • (B) Numbered o (C) Of any shape o (D) Octagonal


58. Where is induced magnetism found?

o (A) In vertical iron only o (B) In horizontal iron only o (C) In hard iron • (D) In soft iron


59. A vessel's position should be plotted using bearings of __________.

• (A) fixed known objects on shore o (B) fixed objects o (C) buoys close at hand o (D) All of the above



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 60. Which statement about gyrocompass error is TRUE?

o (A) The sign (E or W) of the error will change with different headings of the ship. o (B) Any error will remain constant unless the compass is stopped and restarted. o (C) Any error shown by a gyro repeater will be the same as the error of the master compass. • (D) The amount of the error and the sign will generally be the same on all headings.


61. Which term describes a light, feathery deposit of ice by sublimation of water vapor directly into the crystalline form on objects whose temperatures are below freezing?

o (A) Dew • (B) Frost o (C) Snow o (D) Glaze


62. When trying to sight a lighthouse you notice a glare from a town in the background. How does this affect the range at which the light may be sighted?

o (A) Increased if the light is red or green due to contrast with the glare • (B) Considerably reduced and difficult to distinguish o (C) Unchanged o (D) Increased slightly due to extra lighting


63. Which is the most commonly encountered fog at sea?

o (A) Radiation fog o (B) Conduction fog • (C) Advection fog o (D) Frontal fog


64. What agency of the U.S. Government issues charts of U.S. waters and Coast Pilots?

o (A) U.S. Naval Observatory o (B) National Imagery and Mapping Agency o (C) U.S. Coast Guard • (D) National Oceanic and Atmospheric Administration



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2 65. How are chart legends which indicate a conspicuous landmark printed?

o (A) In italics • (B) In capital letters o (C) With underlined letters o (D) In boldfaced print


66. If the electronic chart is part of an ECDIS, it must display the minimum data required by IMO/IHO. Which is NOT required to be displayed?

o (A) Aids to navigation o (B) Regulatory boundaries o (C) Hydrography • (D) tidal currents


67. Which is TRUE concerning Hot air?

o (A) The moisture content of air is independent of air temperature o (B) Hot air retains the same amount of moisture as cold air • (C) Hot air holds more moisture than cold air o (D) Hot air holds less moisture than cold air


68. Which is TRUE concerning the flow of air around an anticyclone in the Southern Hemisphere?

• (A) Air flows in a counterclockwise and outward direction o (B) Air flows in a clockwise and outward direction o (C) Air flows in a counterclockwise and inward direction o (D) Air flows in a clockwise and inward direction


69. In the IALA Maritime Buoyage System, what is a red and white vertically-striped buoy used to indicate?

• (A) Safe water o (B) A special mark not primarily used for navigation o (C) Isolated danger o (D) Preferred channel



8/10/2020

Q138-Navigation General-Near Coastal U.S.C.G. Merchant Marine Exam Mate Less than 500-1600 Gross Registered Tons Illustrations: 2

70. What is the approximate geographic range of Fenwick Island Light, Delaware, if your height of eye is42 feet (12.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".

• (A) 18.3 nmo (B) 13.1 nmo (C) 10.3 nmo (D) 15.4 nm



8/10/2020

National Maritime Center

Serving Our Nation’s Mariners

8/29/2018

D018NG

Adapted for testing purposes only from BOWDITCH, The American Practical Navigator,

An Epitome of Navigation, 2002 Bicentennial Edition

Copyright © 2002 by The National Imagery and Mapping Agency, U. S. Government

Further reproduction prohibited without permission of 18


National Maritime Center

Serving Our Nation’s Mariners

5/7/2019

D044NG

Adapted for testing purposes only from CUTLER, Dutton’s Nautical Navigation, 15th edition

Copyright © 2004 by the U.S. Naval Institute

Further reproduction prohibited without permission of 18


u.s.c.g. merchant marine exam mate less than 500-1600 gross … · 2019-08-29 · q138-navigation...

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