Variation, Deviation & COMPASS ERROR
Variation is a COMPASS ERROR that
CANNOT BE CORRECTED
The TOTAL MAGNETIC EFFECTS cause DEVIATION of a VESSEL'S COMPASS can be BROKEN down into a SERIES of COMPONENTS which are
COEFFICIENTS
COMPASS ERROR is EQUAL to
COMBINED EFFECT of VARIATION and DEVIATION
COMPASS HEADING of a VESSEL DIFFERS from the TRUE HEADING BY
COMPASS ERROR
The STANDARD MAGNETIC COMPASS Heading differs from the TRUE HEADING by
COMPASS ERROR
IF a magnetic compass is not affected by any magnetic field other than the Earth's which is true?
COMPASS ERROR and VARIATION are EQUAL
If a ship is proceeding TOWARDS the MAGNETIC EQUATOR, the UNCORRECTED DEVIATION due to PERMANENT MAGNETISM
DECREASE
MAGNETIC HEADING DIFFERS from COMPASS HEADING by
DEVIATION
THE ERROR in a MAGNETIC COMPASS caused by the vessel's magnetism is called
DEVIATION
The HORIZONTAL ANGLE between the MAGNETIC MERIDIAN and the NORTH-SOTUH line of the MAGNETIC COMPASS is
DEVIATION
the DIFFERENCE between MAGNETIC HEADING and COMPASS HEADING is
DEVIATION
If the MAGNETIC HEADING is GREATER than the COMPASS HEADING, the DEVIATION is
EAST
COMPASS ERROR of a magnetic compass that has NO DEVIATION is
EQUAL to VARIATION
Variation is NOT CONSTANT; it is DIFFERENT with every CHANGE in
GEOGRAPHICAL LOCATION
COMPASS DEVIATION changes as the VESSEL CHANGES
HEADING
DEVIATION CHANGES with a CHANGE in
HEADING
DEVIATION in a COMPASS is caused by the
INFLUENCE of the MAGNETIC MATERIALS of the VESSEL
DEVIATION is caused by
MAGNETIC INFLUENCE INHERENT to that PARTICULAR VESSEL
DEVIATION is the ANGLE BETWEEN
MAGNETIC MERIDIAN and AXIS of COMPASS CARD
Variation is the angular measurement between
MAGNETIC and GEOGRAPHIC MERIDIAN
COMPASS DEVIATION is caused by
MAGNETISM WITHIN THE VESSEL
VARIATION IN A COMPASS IS CAUSED BY
MAGNETISM from the EARTH'S MAGNETIC FIELD
a vessel heading NNE is on a course of
022.5 degrees
a vessel heading ENE is on a course of
067.5 degrees
One Point of a compass is equal to how many degrees?
11.25 degrees
a vessel heading ESE is on a course of
112.5 degrees
a vessel heading SE is on a course of
135 degrees
a vessel heading SSE is on a course of
157.5 degrees
a vessel heading SSW is on a course of
202.5 degrees
a vessel heading SW is on course of
225.0 degrees
a vessel heading WSW is on a course of
247.5 degrees
a vessel heading WNW is on a course of
292.5 degrees
the chart indicates the variation was 3 degrees 45 minutes W in 1988, and the annual change is DECREASING 6'. If you use the chart in 1991 how much variation should you apply?
3 degrees 27 minutes West
a vessel heading NW is on a course of
315 degrees
How many points are there in a compass card?
32
a vessel heading NNW is on a course of
337.5 degrees
How many DEGREES are there on a COMPASS CARD?
360 degrees
a MAGNETIC COURSE CARD is marked in how many degrees?
360 degrees
the chart indicates the variation was 3 degrees 45 minutes E in 1988, and the annual change is INCREASING 6'. If you use the chart in 1991 how much variation should you apply?
4 degrees 03 minutes East
the chart indicates the variation was 3 degrees 45 minutes W in 1988, and the annual change is INCREASING 6'. If you use the chart in 1991 how much variation should you apply?
4 degrees 03 minutes West
a vessel heading NE is on a course of
45.0 degrees
eight points of the compass are equal to how many degrees?
90
MAGNETIC COMPASS DEVIATION is
ANGULAR DIFFERENCE BETWEEN MAGNETIC NORTH and COMPASS NORTH
The COMPASS ROSE on a NAUTICAL CHART INDICATES both VARIATION and ______
ANNUAL RATE of VARIATION CHANGE
TRUE HEADING differs from MAGNETIC HEADING by
VARIATION
The DIFFERENCE in DEGREES between TRUE NORTH and MAGNETIC NORTH is
VARIATION
The magnetic compass error which CHANGES with GEOGRAPHICAL LOCATION of YOUR VESSEL is
VARIATION
To find a MAGNETIC COURSE from a TRUE COURSE you must apply
VARIATION
when changing form a COMPASS COURSE to A TRUE COURSE you should apply
Variation and deviation
To find a magnetic compass course from a true course you must apply
deviation and variation
to find a magnetic compass course from a true course you must apply
deviation and variation
If the COMPASS HEADING and the MAGNETIC HEADING are the same then
there is no deviation on that heading
MAGNETIC VARIATION changes with a change
vessel's position
