F1 - 1350101 Determine and allow for compass errors

C-3

When the compass has a westerly variation, the reading will be higher

What conclusion can you draw that cause the magnetic compass reading higher than it should be?

Variation

What is the angular effect between true north and the magnetic meridian?

The vessel’s position

Magnetic variation changes with a change in _________.

Remains aligned with compass north

As a vessel changes course to starboard, the compass card in a magnetic compass ______.

Influence of the magnetic materials of the vessel

Deviation in a compass is caused by the ________.

directive force component

The ship’s total magnetic force is split into three components, Which is not a component forces of ship total magnetic force?

Deviation change in a heading

What causes the changes of deviation in a magnetic compass?

Traverse table

Which of the following nautical table published for the rapid solution of solving plain sailing also coves to solve distances up to 600 miles and among others such as amplitude?

It changes depend on your geographical location

Variation is not constant. How does a compass variation changes?

Deviation and variation

To find a magnetic compass course from a true course, you must apply _______.

33.75 degrees relative to bow on starboard side

The compass card has 32 points. How many degrees is the light house observed to be 3 points from the bow on starboard side?

337.5°

What course you should set the gyro compass when you want to steer NNW?

Ballistic tilt

In gyro compass principles, what is the small torque about the vertical axis which produce effect of procession about the horizontal referred to?

Ballistic tilt effect

The ballistic tilt cause the axle to wander slightly after an alteration if course and/or speed because of the inclination of the axle. What is this wandering is referred to?

Being directly proportion in the strength of the pole

The basic principle of a magnet is, like poles repel and unlike poles attract. How would you describe the force between the magnetic poles?

Bi-polar theory

Is a magnetic theory that believes the atoms within the molecules are themselves dipole, meaning having two magnetic poles.

By accurate electronics servomechanism

How does the gyrocompass repeater reproduce the indication o master gyro compass?

By applying variation

From your true course how can you find the magnetic course?

Tangent latitude error

Which of the following is the gyro compass error in which dumping is accompanied by offsetting the point of application of the force from a mercury ballistics?

Ballistic deflection error

What is gyro compass error that is brought about by precessing force when the North-South component of the speed changes, causing a surge of mercury from one part to another system?

Degaussing

Reducing the strength of a magnetic field decreases the number of gauss in that field. What is this process called?

Compass error and variation are equal

If a magnetic compass is not affected by any magnetic field other than the Earths, which statement is TRUE?

Coefficients

What are the broken series components of the total magnetic effects which cause deviation of the vessel magnetic compass?

By moving electric charges

According to the present theory, how would the magnetic field around a current-carrying wire and the magnetism of a permanent magnet are created?

By mechanically or electrically applying forces to precess the gyroscope

The spin axis of a gyroscope tends to remain fixed in space in the direction in which it is started. How does the gyroscope become north seeking so that it can be used as compass?