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1-12.
1-13.
1-14.
1-15.
1-16.
1-17.
The compass rose indicates a
v a r i a t i o n o f 9 ° 4 2 . 0 ' E ( 1 9 7 6 ) ,
w i t h a n a n n u a l d e c r e a s e o f 2 ' .
What is the variation in 1995?
1.
9° 00' E
2.
9° 04' E
3. 10o 00' E
4. 10o 03' E
What U.S.
Navy vessels are provided
with a magnetic
steering compass?
1.
All Navy vessels
2.
Combat vessels only
3.
S u r f a c e s h i p s a n d c r a f t o n l y
4.
Vessels with wooden hulls only
O f t h e f o l l o w i n g l o c a t i o n s a b o a r d
ship,
i n w h i c h o n e i s t h e s t e e r i n g
compass usually located?
1.
C e n t e r l i n e
2.
Abaft the beam
3.
Portside to the helmsman
4.
Adjacent to
t h e c h a r t t a b l e
If a ship has two magnetic
compasses,
how is the second
compass referred?
1.
Secondary compass
2.
Steering compass
3.
Standard compass
4.
Alternate compass
In the term "137° PSC", what does
the PSC stand for?
1.
Per standard compass
2.
Per ship's compass
3.
Per steering compass
4.
Pilothouse steering compass
What magnetic compass is usually
the most accurate?
1.
The steering compass
2.
The standard compass
3.
The ship's compass
4.
The portable steering compass
l - l 8 .
F o r b e s t r e l i a b i l i t y , t h e m a g n e t i c
compass should be kept free of
sources of induced magnetism.
1.
True
2.
F a l s e
IN ANSWERING QUESTIONS 1-19 THROUGH 1-22,
SELECT THE FUNCTION FROM COLUMN B THAT
MATCHES THE COMPONENT IN COLUMN A.
RESPONSES ARE USED ONLY ONCE.
A. COMPONENT
B. FUNCTION
1-19. Card
1. Used to align
the compass
1-20. Magnets
2. Made of
1-21. Gimbals
nonmagnetic
m a t e r i a l
1-22. Binnacle
3. Graduated in
degrees from
0 to 359
4. Permits compass
t o r e m a i n l e v e l
1-23.
Which of the following type(s) of
magnetism
i n f l u e n c e ( s ) d e v i a t i o n ?
1.
Permanent only
2.
Induced only
3.
Residual
4.
Permanent and induced
IN ANSWERING QUESTIONS 1-24 THROUGH 1-27,
SELECT THE MAGNETISM FROM COLUMN B THAT
MATCHES THE CHARACTERISTIC IN COLUMN A.
NOT ALL RESPONSES ARE USED AND RESPONSES
MAY BE USED MORE THAN ONCE.
1-24.
1-25.
1-26.
1-27.
A. CHARACTERISTIC
Hard iron
S o f t i r o n
C r e a t e d i n t h e
s h i p ' s s t r u c t u r e
d u r i n g c o n s t r u c t i o n
Varies according
t o t h e i n t e n s i t y
of the component
o f E a r t h ' s f i e l d
B. MAGNETISM
1. Permanent
2. Residual
3. Induced
4. Natural
1-28.
What is the most common method of
determining deviation at sea?
1.
Comparing past and present
compass headings against a
gyrocompass
2.
Verifying compass records
a g a i n s t a d e v i a t i o n t a b l e
3.
Recording the compass readings
o n a l l i n t e r c a r d i n a l h e a d i n g s
4.
Swinging ship
2
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