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1. OIC-NW C1

1. OIC-NW C1
96問 • 2年前
  • Leomar Balhag
  • 通報

    問題一覧

  • 1

    Atmospheric pressure indicated by a barometer or a barograph may be subjected to severral errors. Which of the following is NOT and error affecting barometer reading?

    speed error

  • 2

    What would be the required movement of a rudder in a typical cargo ship?

    35 degrees port and starboard

  • 3

    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 southwest of your DR position. Find the drift:

    2.1 knots

  • 4

    What corrections must always be applied, when reading a mercurial barometer

    Corrections for latitude and height above sea level

  • 5

    What do you expect of your position to be 95% accurate when navigating using GPS?

    within radius of 100m

  • 6

    What is the vertical angle between the horizontal and magnetic line of force?

    dip

  • 7

    How many semi-diurnal tides occur in a 24 hours and 53 minutes cycle?

    2

  • 8

    Where would you find a comprehensive list of navigating charts with the title and number for various parts of the world?

    Chart Catalogue

  • 9

    What would be the behavior of the wind above the sea level of the ridge to indicate the formation of mountain waves?

    Increase with little change in direction

  • 10

    If you are in the Sputhern Hemisphere as a general rule (Buy's Ballot Law), how would you determine the center of low pressure?

    Faces the surface of the wind the center of low is toward your left

  • 11

    Determine the approximate geographic visibility of an object, with height above the water of 26.0 meters, for an observer with a heightof eye of 18.25 meters?

    20 nautical miles

  • 12

    How would you approximate the height above sea level the bases of middle clouds?

    The base is between 6,500 ft - 20,000 ft

  • 13

    What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of 22nd or 23rd day of September?

    Latitude 00 degrees 00 minutes

  • 14

    How would you show understanding of relative humidity?

    It is the ratio of the existing absolute humidity to its saturation value at the same temperature.

  • 15

    What is the light color (when fitted) of the WEST cardinal marks used in IALA Region A and Region B?

    White

  • 16

    What is the speed of the wind in a beaufort force 8?

    Wind speed 34 - 40 knots mean 37 knots

  • 17

    In what way can RADAR be an aid to weather forecasting especially when weather messages are incomplete or not avilable?

    Showers at long range appears on the screen only if moderate or heavy rain falls.

  • 18

    What would be the best reference among the available onboard publication that are going to use in order to reckon the height of tides of a given place?

    The same tide tables as that used for the charts of the locality.

  • 19

    What does Global Positioning System receiver measure to compute its position.

    The difference in time from signal transmission to reception.

  • 20

    A buoy bears 178 degrees at 3000 yards (2,700 meters). What is the course to make good to leave the buoy 100 yards (90 meters) to port beam?

    180 degrees True

  • 21

    What kind of weather accompanying the word fracto in a weather forecast use as a prefix to startus or cumulus clouds?

    Rainy weather with strong winds

  • 22

    At 2245H, your GPS fixes your position at Lat 21° 01.75' N and Long 172° 48.40' W. You are steering a course of 086° psc at a speed of 6.0 knots. At 2400H, you fix your position at Lat 21° 04.2' N and Long 172° 38.85' W. What were your set and drift?

    360°T x 0.4 knots

  • 23

    What is the line drawn on a chart through places having the same value of magnetic dip?

    Isoclinical

  • 24

    Which of the following is one of the two celestial poles that is above the observer's horizon?

    Elevated pole

  • 25

    How would you ensure that accurate positioning is done during chart correction?

    By way of tracing if available as a useful tool for positioning a correction quickly.

  • 26

    What meteorological conditions are likely to produce sub-refraction?

    Very cold air blowing over a relatively warm sea.

  • 27

    Which of the following term refers to the condition of the flow current?

    Set

  • 28

    If you are in the Northern Hemisphere as a general rule (Buys Ballot's Law), how could you determine the center of low pressure?

    Faces the surface of the wind the center of low is toward your right.

  • 29

    How will you plot your vessel's position if you findd that the three position line you used to plot a fixed intersect in a triangle?

    In the geometric center of the triangle.

  • 30

    What is meant by acronym VDR?

    Voyage Data Recorder.

  • 31

    What type of magnetism your ship has?

    permanent

  • 32

    Which meteorological instrument is used to measure air pressure?

    Barometer

  • 33

    What does a sling psychometer measures?

    Relative humidity

  • 34

    What would you need to considered when using a buoy as an aid to navigation?

    The buoy may not be in its charted position

  • 35

    Where will you find the correction to apply to your barometer reading in order to allow for the effect of diurnal variation?

    The amount of which is given each hour of the day in the customary climatic atlases.

  • 36

    If there were no salt or other hygroscopic particles in the air, would there be any clouds and rain?

    The air of the world contains myriads of hygroscopic particles without it there will be neither clouds nor rain.

  • 37

    How would you take an Ex-meridian celestial sight?

    The celestial body is within 28 mins prior to LAN.

  • 38

    You are enroute from Puerto Rico to New York. A hurricane makes up and is approaching. What will be the indication if the wind is veering steadily?

    Your vessel is in the dangerous semicircle.

  • 39

    On your APRA, there are two guard zone. How would you classify the function of the inner guard zone?

    It give warning of small targets that are initially detected that are closer than the outer zone.

  • 40

    The dry bulb thermometer is 30°C and the wet bulb temperature is 28°C, what is the relative Humidity?

    85%

  • 41

    What is meant by acronym VRM?

    Variable Range Marker

  • 42

    What will you expect of the relative humidity of a place throught the 24 hours of the day?

    Reduce during the day and increase at night.

  • 43

    How would you call a chart that has extensive corrections made and again printed?

    New edition

  • 44

    How can the stability of the atmosphere bedetermined?

    Atmospheric temperature lapse rate.

  • 45

    If the ship is proceeding towards the magnetic equator, what will happen to the uncorrected deviation due to permanent magnetism?

    decreases

  • 46

    What is the top mark (if any) of the starboard hand lateral marks used in IALA Region B?

    Single red cone, point upward

  • 47

    How can you predict the velocity of the current in large coastal harbors?

    It is predicted in Tidal Current Tables

  • 48

    A vessel is following a leading light to keep her within the middle of a narrow channel. The chart indicates the range to be 001 degree. If she is "on range" what course she is steering?

    True course 001 deg.

  • 49

    What do you call the phenomenon that will happen when magnetization of an iron or steel lags behind the field?

    Hysteresis

  • 50

    If you take a bearing of 043° and 169° to two prominent objects, what bearing of the third object will provide the best fix?

    The best bearing of the third object should be about 102°

  • 51

    When you are in Polar Region, which of the following weather condition is NOT expected?

    To experience extensive snowfall.

  • 52

    What doies a low HDOP (Horizon Dilution of Precision) number such as 2 indicates?

    Good fix

  • 53

    What is the light color (when fitted) of the EAST cardinal marks used in IALA Region A and Region B?

    White

  • 54

    How could you determine that mixed (time and clear) icing is most likely to be encountered?

    In nimbostratus cloud at a temperature of -10°C.

  • 55

    There are two seperate carrier frequencies that carry the signal transmitted by the GPS satellite. What is the first carrier frequency?

    1575.42 MHz

  • 56

    Which is the best meteorological factor to consider in planning an ocean passage?

    The choice of route must be balanced betwen considerations of safety and time.

  • 57

    What is your idea of a Cold Front?

    It is the line of discontinuity at the surface or a upper level along which an advancing cold air mass is undercutting a warmer air mass.

  • 58

    Determine the best cross bearing line of position betweeen two known objects ashore when piloting a vessel in order to obtain an accurate fix.

    The best is about 90° apart

  • 59

    How would you classify the sextant error when the index arm is not pivoted at the exact centre of the arc?

    Centering error

  • 60

    What is the color of the Starboard hand lateral marks used in IALA Region B?

    Red

  • 61

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

    270° T

  • 62

    What is the difference between the True north and the Magnetic north?

    Variation

  • 63

    What do you call a group of stars which appears close together and form a striking configuration such as a person or animal?

    Constellation

  • 64

    How can you identify aids to navigation marking the intracoastal waterway?

    By yellow stripes, squares or triangles marked on them.

  • 65

    How would you determine the aneroid barometer's approximate height correction?

    The height in feet above sea level increased by 10 percent and divided by 30 gives correction in hectopascals to be added.

  • 66

    If you received a weather forecasts wherein the word fracto is used as a prefix to stratus or cumulus clouds, what kind of weather is accompanying this?

    Rainy weather with strong winds.

  • 67

    How would you find the azimuth of an object in coastal navigation?

    Shooth the bearing of a conspicuous object.

  • 68

    How could you determine the existence of the condition that poor visibility is developing?

    When warm air passes over a surface; which is cooler than dew point of the air; advection fog can form. This occurs over land and sea.

  • 69

    How could you determine the existence of the condition that poor visibility is developing?

    When warm air passes over a surface; which is cooler than dew point of the air; advection fog can form. This occurs over land and sea.

  • 70

    In what area on earth surface does the compass decreases accuracy?

    75 degree latitude

  • 71

    Consider a place approaching a channel when the height of HW is 3.8 meters. The vessels draught is 2.5 meters. What is the under keel clearance over a rock of dring height 0.9 meters?

    Under Keel Clearance = 0.4 meters at High Water

  • 72

    At 1200H, you fix your position and change course to 315T. At 1225H, you again fix your position, and it is 0.9 mile southwest of your DR position. Find the drift:

    2.1 knots

  • 73

    Which statement is CORRECT regarding thunderstorms?

    During the mature stage of a thunderstorm cell: the cloud contains upceurrents and downcurrents.

  • 74

    What do you think will happen to the speed of sound, when the water salinity increases?

    It will increase.

  • 75

    It is known as the angular distance between the zenith and a point on the celestial sphere through the arc of the vertical circle observable for bodies above the horizon.

    Coaltitude

  • 76

    What Judgement can you make in the weather forecast with a dropping barometer and low cloud ceiling?

    An increase of humidity and temperature

  • 77

    How often are chart corrections published?

    Weekly

  • 78

    What is the instrument onboard use to measure atmospheric pressure?

    Barometer

  • 79

    How would you compare the precision of the vessel's position during a coastal passage?

    It is an accurate position fix taken from conspicuous landmarks.

  • 80

    What is the tendency of magnetic lines of induction to concentrate on material of high permeability?

    Magnetic shielding

  • 81

    Determine the relative humidity if the air temperature is 90F and the wet bulb is 81F?

    67%

  • 82

    Which of the following statement 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 mile east of your reckoned position.

    The drift is 0.25 knot per hour

  • 83

    How will the compass card turn in a magnetic compass when the vessel changes course to starboard?

    It will remain aligned with compass north.

  • 84

    What is the safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone?

    Take a possible steps to avoid it if possible.

  • 85

    What is the use of a wet bulb thermometer?

    It measure the temperature of the atmosphere if the atmosphere is 100 percent saturated.

  • 86

    What is the main reason NAVAREA warnings are cancelled.

    A Navarea warning is superseded by a newe warning.

  • 87

    Which of the following is the most reliable bearing that should be used in determining vessel's position?

    Fixed known object on shore.

  • 88

    What is the error introduced into the satellite signal in the ephemeris data?

    Epsilon error

  • 89

    How would you classify the position that is obtained by applying charted current and observed wind direction to your vessel's course and speed?

    Estimated position

  • 90

    What do you see on an onboard publication that is used to reckon the height of tides of a given place?

    The same tide tables as that used for the charts of the locality

  • 91

    As you enter a U.S. Channel from seaward, how do the numbers on the buoys changes?

    It increases with the can buoys being odd numbered

  • 92

    Speaking of Global Positioning System, how accurate is a GPS horizontal accuracy?

    With in a range of 100 meters

  • 93

    How are masses and ocean currents related to each other?

    Warm air masses warm ocean currents

  • 94

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

    Agonic

  • 95

    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?

    correspondence between the thirty two points rose

  • 96

    What is the variation of a compass if the True heading is 215 and the Magnetic is 223

    8 W

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    問題一覧

  • 1

    Atmospheric pressure indicated by a barometer or a barograph may be subjected to severral errors. Which of the following is NOT and error affecting barometer reading?

    speed error

  • 2

    What would be the required movement of a rudder in a typical cargo ship?

    35 degrees port and starboard

  • 3

    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 southwest of your DR position. Find the drift:

    2.1 knots

  • 4

    What corrections must always be applied, when reading a mercurial barometer

    Corrections for latitude and height above sea level

  • 5

    What do you expect of your position to be 95% accurate when navigating using GPS?

    within radius of 100m

  • 6

    What is the vertical angle between the horizontal and magnetic line of force?

    dip

  • 7

    How many semi-diurnal tides occur in a 24 hours and 53 minutes cycle?

    2

  • 8

    Where would you find a comprehensive list of navigating charts with the title and number for various parts of the world?

    Chart Catalogue

  • 9

    What would be the behavior of the wind above the sea level of the ridge to indicate the formation of mountain waves?

    Increase with little change in direction

  • 10

    If you are in the Sputhern Hemisphere as a general rule (Buy's Ballot Law), how would you determine the center of low pressure?

    Faces the surface of the wind the center of low is toward your left

  • 11

    Determine the approximate geographic visibility of an object, with height above the water of 26.0 meters, for an observer with a heightof eye of 18.25 meters?

    20 nautical miles

  • 12

    How would you approximate the height above sea level the bases of middle clouds?

    The base is between 6,500 ft - 20,000 ft

  • 13

    What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of 22nd or 23rd day of September?

    Latitude 00 degrees 00 minutes

  • 14

    How would you show understanding of relative humidity?

    It is the ratio of the existing absolute humidity to its saturation value at the same temperature.

  • 15

    What is the light color (when fitted) of the WEST cardinal marks used in IALA Region A and Region B?

    White

  • 16

    What is the speed of the wind in a beaufort force 8?

    Wind speed 34 - 40 knots mean 37 knots

  • 17

    In what way can RADAR be an aid to weather forecasting especially when weather messages are incomplete or not avilable?

    Showers at long range appears on the screen only if moderate or heavy rain falls.

  • 18

    What would be the best reference among the available onboard publication that are going to use in order to reckon the height of tides of a given place?

    The same tide tables as that used for the charts of the locality.

  • 19

    What does Global Positioning System receiver measure to compute its position.

    The difference in time from signal transmission to reception.

  • 20

    A buoy bears 178 degrees at 3000 yards (2,700 meters). What is the course to make good to leave the buoy 100 yards (90 meters) to port beam?

    180 degrees True

  • 21

    What kind of weather accompanying the word fracto in a weather forecast use as a prefix to startus or cumulus clouds?

    Rainy weather with strong winds

  • 22

    At 2245H, your GPS fixes your position at Lat 21° 01.75' N and Long 172° 48.40' W. You are steering a course of 086° psc at a speed of 6.0 knots. At 2400H, you fix your position at Lat 21° 04.2' N and Long 172° 38.85' W. What were your set and drift?

    360°T x 0.4 knots

  • 23

    What is the line drawn on a chart through places having the same value of magnetic dip?

    Isoclinical

  • 24

    Which of the following is one of the two celestial poles that is above the observer's horizon?

    Elevated pole

  • 25

    How would you ensure that accurate positioning is done during chart correction?

    By way of tracing if available as a useful tool for positioning a correction quickly.

  • 26

    What meteorological conditions are likely to produce sub-refraction?

    Very cold air blowing over a relatively warm sea.

  • 27

    Which of the following term refers to the condition of the flow current?

    Set

  • 28

    If you are in the Northern Hemisphere as a general rule (Buys Ballot's Law), how could you determine the center of low pressure?

    Faces the surface of the wind the center of low is toward your right.

  • 29

    How will you plot your vessel's position if you findd that the three position line you used to plot a fixed intersect in a triangle?

    In the geometric center of the triangle.

  • 30

    What is meant by acronym VDR?

    Voyage Data Recorder.

  • 31

    What type of magnetism your ship has?

    permanent

  • 32

    Which meteorological instrument is used to measure air pressure?

    Barometer

  • 33

    What does a sling psychometer measures?

    Relative humidity

  • 34

    What would you need to considered when using a buoy as an aid to navigation?

    The buoy may not be in its charted position

  • 35

    Where will you find the correction to apply to your barometer reading in order to allow for the effect of diurnal variation?

    The amount of which is given each hour of the day in the customary climatic atlases.

  • 36

    If there were no salt or other hygroscopic particles in the air, would there be any clouds and rain?

    The air of the world contains myriads of hygroscopic particles without it there will be neither clouds nor rain.

  • 37

    How would you take an Ex-meridian celestial sight?

    The celestial body is within 28 mins prior to LAN.

  • 38

    You are enroute from Puerto Rico to New York. A hurricane makes up and is approaching. What will be the indication if the wind is veering steadily?

    Your vessel is in the dangerous semicircle.

  • 39

    On your APRA, there are two guard zone. How would you classify the function of the inner guard zone?

    It give warning of small targets that are initially detected that are closer than the outer zone.

  • 40

    The dry bulb thermometer is 30°C and the wet bulb temperature is 28°C, what is the relative Humidity?

    85%

  • 41

    What is meant by acronym VRM?

    Variable Range Marker

  • 42

    What will you expect of the relative humidity of a place throught the 24 hours of the day?

    Reduce during the day and increase at night.

  • 43

    How would you call a chart that has extensive corrections made and again printed?

    New edition

  • 44

    How can the stability of the atmosphere bedetermined?

    Atmospheric temperature lapse rate.

  • 45

    If the ship is proceeding towards the magnetic equator, what will happen to the uncorrected deviation due to permanent magnetism?

    decreases

  • 46

    What is the top mark (if any) of the starboard hand lateral marks used in IALA Region B?

    Single red cone, point upward

  • 47

    How can you predict the velocity of the current in large coastal harbors?

    It is predicted in Tidal Current Tables

  • 48

    A vessel is following a leading light to keep her within the middle of a narrow channel. The chart indicates the range to be 001 degree. If she is "on range" what course she is steering?

    True course 001 deg.

  • 49

    What do you call the phenomenon that will happen when magnetization of an iron or steel lags behind the field?

    Hysteresis

  • 50

    If you take a bearing of 043° and 169° to two prominent objects, what bearing of the third object will provide the best fix?

    The best bearing of the third object should be about 102°

  • 51

    When you are in Polar Region, which of the following weather condition is NOT expected?

    To experience extensive snowfall.

  • 52

    What doies a low HDOP (Horizon Dilution of Precision) number such as 2 indicates?

    Good fix

  • 53

    What is the light color (when fitted) of the EAST cardinal marks used in IALA Region A and Region B?

    White

  • 54

    How could you determine that mixed (time and clear) icing is most likely to be encountered?

    In nimbostratus cloud at a temperature of -10°C.

  • 55

    There are two seperate carrier frequencies that carry the signal transmitted by the GPS satellite. What is the first carrier frequency?

    1575.42 MHz

  • 56

    Which is the best meteorological factor to consider in planning an ocean passage?

    The choice of route must be balanced betwen considerations of safety and time.

  • 57

    What is your idea of a Cold Front?

    It is the line of discontinuity at the surface or a upper level along which an advancing cold air mass is undercutting a warmer air mass.

  • 58

    Determine the best cross bearing line of position betweeen two known objects ashore when piloting a vessel in order to obtain an accurate fix.

    The best is about 90° apart

  • 59

    How would you classify the sextant error when the index arm is not pivoted at the exact centre of the arc?

    Centering error

  • 60

    What is the color of the Starboard hand lateral marks used in IALA Region B?

    Red

  • 61

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

    270° T

  • 62

    What is the difference between the True north and the Magnetic north?

    Variation

  • 63

    What do you call a group of stars which appears close together and form a striking configuration such as a person or animal?

    Constellation

  • 64

    How can you identify aids to navigation marking the intracoastal waterway?

    By yellow stripes, squares or triangles marked on them.

  • 65

    How would you determine the aneroid barometer's approximate height correction?

    The height in feet above sea level increased by 10 percent and divided by 30 gives correction in hectopascals to be added.

  • 66

    If you received a weather forecasts wherein the word fracto is used as a prefix to stratus or cumulus clouds, what kind of weather is accompanying this?

    Rainy weather with strong winds.

  • 67

    How would you find the azimuth of an object in coastal navigation?

    Shooth the bearing of a conspicuous object.

  • 68

    How could you determine the existence of the condition that poor visibility is developing?

    When warm air passes over a surface; which is cooler than dew point of the air; advection fog can form. This occurs over land and sea.

  • 69

    How could you determine the existence of the condition that poor visibility is developing?

    When warm air passes over a surface; which is cooler than dew point of the air; advection fog can form. This occurs over land and sea.

  • 70

    In what area on earth surface does the compass decreases accuracy?

    75 degree latitude

  • 71

    Consider a place approaching a channel when the height of HW is 3.8 meters. The vessels draught is 2.5 meters. What is the under keel clearance over a rock of dring height 0.9 meters?

    Under Keel Clearance = 0.4 meters at High Water

  • 72

    At 1200H, you fix your position and change course to 315T. At 1225H, you again fix your position, and it is 0.9 mile southwest of your DR position. Find the drift:

    2.1 knots

  • 73

    Which statement is CORRECT regarding thunderstorms?

    During the mature stage of a thunderstorm cell: the cloud contains upceurrents and downcurrents.

  • 74

    What do you think will happen to the speed of sound, when the water salinity increases?

    It will increase.

  • 75

    It is known as the angular distance between the zenith and a point on the celestial sphere through the arc of the vertical circle observable for bodies above the horizon.

    Coaltitude

  • 76

    What Judgement can you make in the weather forecast with a dropping barometer and low cloud ceiling?

    An increase of humidity and temperature

  • 77

    How often are chart corrections published?

    Weekly

  • 78

    What is the instrument onboard use to measure atmospheric pressure?

    Barometer

  • 79

    How would you compare the precision of the vessel's position during a coastal passage?

    It is an accurate position fix taken from conspicuous landmarks.

  • 80

    What is the tendency of magnetic lines of induction to concentrate on material of high permeability?

    Magnetic shielding

  • 81

    Determine the relative humidity if the air temperature is 90F and the wet bulb is 81F?

    67%

  • 82

    Which of the following statement 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 mile east of your reckoned position.

    The drift is 0.25 knot per hour

  • 83

    How will the compass card turn in a magnetic compass when the vessel changes course to starboard?

    It will remain aligned with compass north.

  • 84

    What is the safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone?

    Take a possible steps to avoid it if possible.

  • 85

    What is the use of a wet bulb thermometer?

    It measure the temperature of the atmosphere if the atmosphere is 100 percent saturated.

  • 86

    What is the main reason NAVAREA warnings are cancelled.

    A Navarea warning is superseded by a newe warning.

  • 87

    Which of the following is the most reliable bearing that should be used in determining vessel's position?

    Fixed known object on shore.

  • 88

    What is the error introduced into the satellite signal in the ephemeris data?

    Epsilon error

  • 89

    How would you classify the position that is obtained by applying charted current and observed wind direction to your vessel's course and speed?

    Estimated position

  • 90

    What do you see on an onboard publication that is used to reckon the height of tides of a given place?

    The same tide tables as that used for the charts of the locality

  • 91

    As you enter a U.S. Channel from seaward, how do the numbers on the buoys changes?

    It increases with the can buoys being odd numbered

  • 92

    Speaking of Global Positioning System, how accurate is a GPS horizontal accuracy?

    With in a range of 100 meters

  • 93

    How are masses and ocean currents related to each other?

    Warm air masses warm ocean currents

  • 94

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

    Agonic

  • 95

    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?

    correspondence between the thirty two points rose

  • 96

    What is the variation of a compass if the True heading is 215 and the Magnetic is 223

    8 W