Magnetic Compass Flashcards
The outer ring of a compass rose on a chart points to magnetic heading.
True
False
False
______________ poles repel each other.
Unlike
Like
Similar
Identical
Like
Laws of magnetism refer to the ______________ and _______________.
Latitudes and longitudes
Prime meridian and equator
North and South poles
Variation and deviation
North and South poles
Magnetic medians or lines of force are the same thing as great circles.
True
False
False
Compass nomenclature includes ____________________.
Windlass
Drum
Hawsepipe
None of the above
None of the above
_________________ allow the compass to stay horizontal regardless of the shops movement.
Float
Gimbal
Lubber Line
Magnets
Gimbal
A _______________ points to the vessels current heading.
Lumber line
Flubber line
Compass line
Lubber line
Lubber line
________________ changes as a ships magnetic properties change with heading.
Variation
Gyro heading
Deviation
Magnetic disturbance
Deviation
A magnetic compass must be properly installed and protected from disturbing magnetic influences.
True
False
True
What piece of equipment can disrupt the magnetic compass?
Electrical motors
Cell phone
The vessel itself
All of the above
All of the above
“PSC” stands for ______________.
Per Ships Cargo
Pending Ships Course
Per Standard Compass
Per safety concerns
Per Standard Compass
A steering compass is located in the ___________________.
Forepeak
Pilothouse
Crew quarters
Galley
Pilothouse
________________ is shown on the compass rose of the chart for particular locality, together with the amount of annual increase or decrease.
Deviation
Variation
Magnetic Disturbance
Compass Error
Variation
A method of determining deviation can consist of ___________________.
Stopping the boat and recording the magnetic compass
Compare the magnetic compass with known deviation
Comparing the gyro compass the true compass
Adding variation plus deviation and splitting the difference
Compare the magnetic compass with known deviation
The prudent mariner should ALWAYS maintain their magnetic compass including deviation table.
True
False
True
