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1-53.
The magnetic compass error called
variation is caused by which of the
following facts?
1.
The Earth is not perfectly
round
2.
Compasses cannot be constructed
without mechanical defects
3.
Positions of the magnetic and
geographic poles are not the
same
4.
Metals in ships have magnetic
qualities
1-54.
The magnetic steering compass is
usually located topside, while the
standard compass is located in the
pilothouse.
1.
True
2.
False
1-55.
For what reason are the gyro
repeaters placed on the
bridgewings?
1.
To take position angles on
aircraft
2.
To steer by in fair weather
3.
To take bearings
4.
To correct for magnetic compass
deviation
1-56.
What bearing is the direction of an
object as indicated by the magnetic
compass?
1. Compass
2. True
3. Relative
4. Position
1-57.
You are the forward lookout and
observe a contact on the port beam.
What bearing should you report to
the bridge?
1.
000°
2.
090°
3.
180°
4.
270°
1-58.
How many degrees are contained in
each point of the compass card?
1.
011 1/4°
2.
012°
3.
016°
4.
020°
1-59.
What is the reciprocal bearing of
your ship if your course is 230°?
1.
050°
2.
090°
3.
180°
4.
280°
1-60.
What type of steering engine is
used on most vessels of recent
design?
1.
Mechanical
2.
Steam
3.
Electrohydraulic
4.
Electromechanical
1-61.
What is the function of the
steering gear follow-up shaft?
1.
To stop the pumping of oil when
the rudder reaches the desired
angle
2.
To turn the rudder mechanically
in an emergency
3.
To supply oil to the running
pump in an emergency
4.
To allow the trick wheel to be
engaged for local steering
1-62.
What safety device stops the rudder
movement when the rudder is brought
against the stops?
1.
Single-ram
2.
Double-ram
3.
Steering engine cutoff
4.
Steering engine cutout
1-63.
What signal alerts the helmsman in
after steering that the bridge has
ordered a change in rudder angle?
1.
A flashing red light
2.
A flashing white light
3.
A whistle
4.
A bell
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