COMPETENCY 1

1. On certain type of charts where depth information is sufficiently precise, how may the
soundings be expressed for deep draft vessels?
A. Soundings between 21 m and 31 m
B. Soundings between 31 m and 41 m
C. Soundings between 11 m and 21 m

2. What is the right rhythm (when fitted) of the East Cardinal Marks used in IALA region A
and B?
A.VQ(3) every 5 seconds or Q(3) every 10 seconds
B. Very quick or Quick flashing
C.Group quick flashing (3) every 15 seconds

3. What do you call the function of the horizontal component of the compass that gives the
compass needle the ability to point north?
A. Directive force
B. Magnetic force
C. Tractive force

4. What would be the approximate geographical visibility of an object with a height of 10.7
meters above sea level for an observer at a height of 21.7 m?
A.16.7 nautical miles
B.18.1 nautical miles
C. 17.3 nautical miles

5. It is an instrument designed to maintain a continuous record of atmospheric pressure?

A. Barograph
B. Aneroid Barometer
C. Thermograph

6. Which one is the most reliable way of calculating the position among the listed method?
A. Fix
B. Estimated position
C. Dead Reckoning

7. How could you determine the circumstances where there is a clear sky, calm wind and a high
relative humidity in Autumn?
A. Radiation fog is likely at sunrise after previous mist
B..Radiation fog is likely overnight
C. Advection fog is form

8. What is the instrument design to maintain a continuous record of atmospheric pressure?

A. Barograph B. Aneroid Barometer C. mercurial barometer
9. What is the relationship of the ‘Register Intensity’ switch in the overall performance of the
Echo sounder in order to obtain accuracy and a clear record of the seabed?
A. It is used in analogue echo sounders to adjust the recording intensity
B. It entails signal amplification
C. It is responsible for the vertical

10. Common time on a typical clock measures a slightly longer cycle accounting for the Earth’s
axial rotation. How much is the difference between a sidereal day and a solar day?
A.4.0905 SI seconds
B.4.9005 s
C.4.5900 s

11. What is the surface wind generally considered among the most constant of winds, blowing
for days or even week with little change in direction?
A. Trade Winds
B. Season Wind
C. Geostropic Wind

12. How would you ensure that accurate positioning is done during chart correction?
A. By way of tracing if available as a useful tool for positioning a correction quickly
B. By way of large scale
C. By way of chartlet

13. How does Gyro compass repeaters reproduce the indications of the master gyro compass?
A. Through the accurate electronic servo mechanism
B. Through the magnetic
C. Through the adjustment

14. In navigation, what is meant by a buoy?

A. A floating object w/c is anchored at a given position of defined shape and color and serves as
an aid to navigation
B. A floating object w/c is anchored with a sound signal
C. A floating object w/c is anchored at a given position and serves as an aid to navigation

15. Your vessel’s heading is 330* pgc and 345* psc with a 2*E gyro error. If there is a variation
of 6*W, what is the deviation on this heading?
A.7* W
B. 8*W
C.7*E

16. Which one of the ff. is the strength of field in w/c a unit magnetic pole would experience a
force of one dyne?
A. Oersted B. Flux C. Hyteresis
17. How would you show your understanding on the term Compass points?
A. It is the division of a compass at equal intervals in degrees and each division is further divided
quarterly
B. It is the division of a compass wherein a circle of
C. It is the division at equal points

18. How would you show your understanding of dew point?

A. It is the temperature to w/c unsaturated air
B. It is the amount of water
C. It is the ratio of

19. How would you ensure the realibility when transferring a position from Global Positioning
System to a nautical chart?
A. Make sure that the chart and the GPS use same datum
B. Make sure that the GPS is
C. Make sure that the GPS use

20. With anticyclone over Europe, what is the expected weather?

A. Clear skies of fair weather CU in summer
B. Thunderstorm
C. Clear skies in summer

21. You are running parallel to the coast and take a running fix using bearings of the same
landmark. If you are making less speed than used for the running fix, where will you be in
relation to the position indicated by the fix?
A. Closer to the coast
B. Farther
C. On the track

22. What is a sling psychometer?

A. An instrument use to measure relative humidity
B. An instrument use to measure specific
C. An instrument use to measure density

23. If you observed an excessive noise from the Steering gear, how would you rectify it?
A. Air must be removed from the system using vent valve provided in the cylinder and pump
specially after the system is replenished with new oil
B. Air must be remove from the system using the valve located
C. Air must be removed from the system if the valve

24. What is the light color (when fitted) of the EAST cardinal marks used in IALA region A and
Region B?
A. White B. Red C. Yellow

25. Which of the ff. is one of the control systems of ship’s routeing?
A. Minimize the chances of loss
B. Prevent Marine
C. Enhance Maritime

26. What is meant by acronym RML?

A. Relative Motion Line
B. Relative Moving Line
C. Revolving Motion Line

27. If there are small cumulus clouds in the morning in summer, what kind of cloud cover would
you expect and is the reason to forecast later in the day?
A. CB Cloud
B. ST and drizzle
C. Haze

28. What do you call a line drawn on a chart joining places having the same temperature at the
same level and at the same time?
A. An isotherm
B. An isobar
C. An isallobar

29. What is the maximum sustained surface wind speed of a cyclone in order for it to be
classified as a tropical depression?
A. about 33 knots
B. about 28 knots
C. about 30 knots

30. At 1300H, you fix your position and change course to 315*T at 1325H, you again fix your
position, and it is 0.9 mile sw of your DR position. Find the drift.
A. 2.1 knots
B. 2.3 knots
C. 1.7 knots

31. When using buoy as an aid to navigation, and what do we always need to be considered?
A. The buoy may not be in it’s charted position
B. They buoy may not be reliable
C. The buoy may not give

32. How would you call a group of stars which appear close together and from a striking
configuration such as a person or animal?
A. Constellation
B. Galaxy C. Cluster

33. If your barometer reading shows a low pressure system in the area, what kind of weather is
expected?
A. Stormy and wet
B. Clear sky
C. Sunny and dry

34. What is the color of the South cardinal marks used in IALA region A and B?
A. Yellow above black
B. Yellow with a
C. Black with

35. How would you check the operational readiness of RADAR to ensure that the quality of the
display has not be deteriorated?
A. The performance of the radar should be checked WHILST a radar watcg us being maintained
using the performance monitor
B. The performance of the radar should be checked before sailing
C. Frequent checks of the radar

36. What is your idea of a Cold Front?

A. It is the line of discontinuity at the surface of a upper level along which an advancing cold air
mass is undercutting a warmer air mass
B. It is that area of a depression
C. It is the sudden

37. A hurricane has recurved to the northeast with a forward speed of 20 knots. Your ship is
located 600 miles northeast of a hurricane’s center. How long will it take for the hurricane’s
center to reach your position if it holds its presents course and speed?
A. 30 hours
B. 20 hours
C. 10 hours

38. When can a radar target remain stationary on relative motion display?
A. When on the same course and speed as your vessel
B. When on the same course as your vessel
C. When on reciprocal

39. What would you need to considered when using a buoy as an aid to navigation?
A. The bouy may not be in it’s a charted position
B. The bouy may not be properly
C. The bouy may not give
40. Base on what you know, how would you explain your understanding of humidity?
A. It is the water vapour of the air expressed in mass per unit volume B. it is the amount of water

41. You are on course 344 deg True and take a relative bearing of a lighthouse of 090 deg. What
is the true bearing of the lighthouse?
A. 074 degrees
B. 016 degrees
C. 270 degress

42. How does the noise of thunder produces when you saw a lightning flash?
A. The effect of the instantaneous heating and sudden expansion of the air near the lightning
flash produces the noise
B. The ionizing of air
C. The effect of

43. What is the safest and most prudent procedure to follow while navigation in the vicinity of a
tropical cyclone?
A. Take a possible steps to avoid it if possible
B. Navigate toward
C. Batten down

44. If you experience where there is no steering from remote control, what will be the MOST
probable cause?
A. Breakdown of hydraulic pumps
B. Malfunction
C. Problem in tele

45. How yould you call a chart that has extensive corrections made and again printed?
A. New edition
B. Reprint
C. Revised

46. What approach would you use in keeping up-to-date Sailing directions?
A. I will ascertain if the book under consideration is the last one issued
B. I will have to know
C. I will ascertain if one or

47. How would you describe the process of changing of state from liquid to gas?
A. Evaporation in which latent heat is absorbed
B. Evaporation in which latent heat is released
C. Condensation
48. How does the jet stream affect the weather conditions around the world?
A. The strong wind current of the jet stream PUSHES weather systems
B. The strong wind current of the jet streams prevents
C. The strong wind current of the jet streams redirects

49. What do you call a group of stars which appears close together and form a striking
configuration such as a person or animal?
A. Constellation
B. Galaxy
C. Cluster

50. How did a vessel acquired her permanent magnetism?

A. Due to energy imparted
B. Due to Earth’s
C. Due to magnetism

51. What type of magnetism your ship has?

A. Permanent
B. Induced
C. Sub-permanent

52. How can the stability of the atmosphere be determined?

A. Ambient temperature lapse rate
B. Atmospheric pressure
C. Surface temperature

53. A common compass rose as found on a nautical chart shows true north and magnetic north.
What will you notice on the inner circle and the graduations of the circle?
A. correspondence between the thirty two points rose
B. correspondence between the thirty six points rose
C. correspondence between the thirty seven points rose

54. How is the isobar drawn in a weather map when an isobar crosses a front?
A. Kinked and pointing away from low
B. Perpendicular
C. Parallel

55. A hurricane has recurved to the northeast and it’s forward speed is 20 knots. Your ship is
located 600 nukes NE of the hurricane’s center. How long will it take for the hurricane center to
reach your position if it holds it’s presents track and speed?
A. 30 hours
B. 40 hours
C. 50 hours
56. What is the wind system that you will encounter blowing from SW from May to September
in China Sea
A. Summer Moonson B. SouthEast Trade C. Winter Moonson

57. What would be the problem most likely to be encountered associated with hydraulic steering
system?
A. Air in the system
B. Electricity
C. Oil

58. At night a channel is marked by a range light which bears 185 T. You steady up on a
compass course of 180 T with the range in line dead ahead. What does this indicates?
A. Your compass has some easterly error
B. Your course is in error
C. You are being affected

59. When you are in Polar Region, which of the ff weather condition is NOT expected?
A. To experience extensive snowfall
B. To perceived
C. To encounter

60. What would be the behavior of the wind above the level of the ridge to indicate the formation
of mountain waves?
A. Increase with little change in direction
B. Decrease or even
C. Increase initially

61. Several types of pressure distribution may be associated with radiation fog, which is feature
of an all have one in common?
A. A slack pressure gradients
B. A rapidly falling pressure
C. Closely spaced

62. What is the temperature in Centigrade from 152* F

A. 66.7* C
B. 66.9* C
C. 66.6* C

63. What is the deviation of a compass if the compass heading is 312* and the magnetic heading
is 298*

A. 14*W
B. 14*E
C.28*E

64. How will the compass card turn in a magnetic compass when the vessel changes course to
starboard A. It will remain aligned B. It will first C. It will turn

65. What is the nature of the shore if you see fine dots on the chart?
A. Sandy beach
B. Pebbled beach
C. Magnetite beach

66. What is the tendency of magnetic lines of inducation to concentrate on material for high
permeability
A. Magnetic shielding
B. Magnetic flux
C. Magnetic remanence

67. What is meant by Speed over the ground?

A. It is the ship actual speed with respect to the Earth
B. It is the ship actual speed during
C. It is the ship actual speed with respect to the Earth along

68. If your barometer reading shows a high pressure in the area, what kind of weather is
expected?
A. Sunny and dry
B. Rainstorm
C. Tornado

69.In weather forecasting, what is the meaning of the expression NSW?

A.The forecast indicates the end of the significant weather
B.High layers of clouds are not expected
C. No significant

70. How would you take and an Ex-Meridian celestial sign?

A. The Celestial body is within 28 mins.
B. The Celestial body is transit
C. The Celestial body is at lower

71. At 1500H, you fix your position and change course to 315*T. At 1525H, you again fix your
position, and it is 0.9 mile sw of your DR position. Find the drift:
A. 2.1 knots
B. 1.9 knots
C. 1.7 knots
72. Which of the ff. is NOT an error of a Global Positioning System?
A. Tropospheric ducting
B. Clock error
C.Ephemeris

73. Where does the lines of force directed from south to north and from north to south within the
magnet?
A. External field
B. Middle part
C. Extreme side

74.What is the line drawn on a chart through places of NO variation?

A. Agonic
B. Isoclinal
C. Aclinic

75. When will a celestial body will cross the prime vertical scale?
A. When the latitude numerically greater than the declination and both are of the same name
B. When the latitude numerically less than the declination and both are of the same name
C. When the latitude numerically greater than the declination and both are of the contrary name

76. Which of the ff. statement is describing a Warm front?

A. The warmer air ascend over the colder air is more or less uniform where the intensity
B. The speed of ascent
C. It is the event

77. Speaking of Global Positioning System, how accurate is a GPS Horizontal accuracy?
A. With in a a range of 100 meters
B. With in a range of 300 m
C. With in a range of 150

78. On what does the operation of aneroid barometer depend?

A. Thin, metal, air
B. column of
C. Curved tube

79. On a chart, cardinal marks of the compass indicates the position of a danger and the direction
of the safe side. How would you determine a SOUTH cardinal mark?
A. It is painted yellow over black
B. It is painted black
C. It is painted yellow with black
80. What do you call a system of a reservoirs and connecting tubes on a gyro compass?
A. Mercury ballistic
B. Rotor
C. Grotron

81. What does an Alto Cumulus type of clouds at a sufficient low angle of elevation represent?
A. A sign of instability which may give rise to thunderstorms
B. A rainy weather
C. A sign of bad weather

82. Which is the best answer with regards to the working principle of a hygrometer?
A. The lower the humidity of the air
B. When humidity
C. The difference

83. In weather forecasting, certain types of clouds are associated with certain types of weather. If
you observed with an “Alto cumulus” type of cloud at a sufficient low angle of elevation, what
does it represents?
A. A sign of instability
B. Rainy weather
C. Precursor

84. What conclusion can you draw when operating in an area where sea ice and iceberg are
present?
A. Icebergs may travel in a direction many degrees different from the sea ice.
B. Icebergs and sea ice will move
C.Both Icebergs

85. In what way can RADAR be an aid to weather forecasting especially when weather messages
are incomplete or not available?
A. Showers at long range
B. The radar beam
C. Showers at close range

86. How would you fulfill the condition for sailing in coastal navigation?
A. Develop a detailed passage plan to include weather forecasts
B. Develop a detailed passage plan, coordinate
C. Develop a detailed passage plan and approach

87. What is the line drawn on a chart through places that is synonymous with the Magnetic
equator?
A. Aclinic
B. Isoclinical
C. Agonic

88. On a chart, cardinal marks of the compass indicates the position of a danger and the direction
of the safe side. How would you determine an EAST cardinal mark?
A. It is painted black with yellow bands
B. it is painted yellow over black
C. It is painted black over yellow

89. Which of the ff. statements described on how does the corona of the sun and moon is form?
A. When the sun or moon seen through
B. When the temperature
C. When the bea,

90. How would you characterize the tropopause in mid-latitudes

A. Lower in winter with a higher temperature
B. Lower in summer with a high temperature
C. Lower in summer with a lower temperature

91. You on course 330* pgc and psc with a 2* E gyro error. If there is a variation of 10*W, what
is the deviation on this heading?
A. 3*W
B. 7*W
C. 4*E

92. What do you call a gyroscope error that affects the heading system due to the rotation of the
earth?
A. Apparent drift
B. Heading error
C. System error

93. Which omf the ff. statements is TRUE about fixing a position on a given situation. At 0000
you fix your position and plot a new DR track line. At 0200 you again fix your position and it is
0.5 miles east of your reckoned position.
A. The drift is 0.25 knots per hour
B. The wind set
C. The direction

94. In navigation, what is meant by commissioned?

A. The Action of placing a previously DISCONTINUED aid
B. The Action of plaing a previously decommissioned aid
C. The term is used in
95. On a chart, cardinal marks of the compass indicates the position of a danger and the direction
of the safe side. How would you determine a WEST cardinal mark?
A. It is painted yellow with black bands
B. It is painted yellow over black bands
C. It is painted black with yellow bands

96. What is the position can you derive during meridian passage?
A. Latitude Line
B. Course Line C. Longitude Line
97. Where is the compass card attached in a gyrocompass?
A. Sensitive element
B. Pick up transmitter
C. Link arm

98. What is the variation of a compass if the True heading is 312* and the Magnetic heading is
298*?
A. 14*E
B. 28*W
C. 14*E

99. What does the numeral in the center of a wind rose on a pilot chart indicates?
A. Percentage of calm
B. Percentage of Highs
C. Percentage of Lows

100. What celestial body may sometimes be observed in daylight?

A. Venus
B. New Moon
C. Sirius