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1-29.
1-30.
1-31.
A l l d e v i a t i o n i s r e m o v e d a f t e r a
magnetic compass is adjusted.
1.
True
2.
False
Which of the following degaussing
c o i l s c o u n t e r a c t s t h e s h i p ' s
longitudinal permanent and induced
magnetism?
1. A
2.
F
3. M
4. Q
Which of the following degaussing
c o i l s w i l l c o u n t e r a c t t h e s h i p ' s
vertical permanent and induced
magnetism?
1. A
2.
F
3.
L
4. M
IN ANSWERING QUESTIONS 1-32 THROUGH 1-35
SELECT THE DESCRIPTION FROM COLUMN B THAT
MATCHES THE DEGAUSSING COIL IN COLUMN A.
RESPONSES ARE ONLY USED ONCE.
A. COILS
B. DESCRIPTIONS
1-32. A
1-33. F
1-34. L
1-35. Q
1. Made up of loops
i n v e r t i c a l p l a n e s
p a r a l l e l t o t h e
s h i p ' s f r a m e s
2. E n c i r c l e s t h e
a f t e r 1 / 3 o f t h e
s h i p
3. E n c i r c l e s t h e
forward 1/3 of
t h e s h i p
4. Made up of loops
i n v e r t i c a l
f o r e - a n d - a f t
planes
1-36.
What coil serves the same purpose
a s t h e F c o i l ?
1. A
2.
L
3. Q
4. M
1-37.
Which of the following types of
headings may be used to name a
course or heading?
1.
True
2.
Magnetic
3.
Compass
4.
All of the above
1-38.
When correcting or uncorrecting the
compass from one heading expression
to another, which of the following
f o r m u l a s i s c o r r e c t ?
1.
Correcting,
a d d e a s t d e v i a t i o n
2.
Correcting,
add west variation
3.
U n c o r r e c t i n g , a d d e a s t
v a r i a t i o n
4.
Uncorrecting,
s u b t r a c t e a s t
d e v i a t i o n
1-39.
Converting from true course to
compass course is called
uncorrecting the compass.
1.
True
2.
False
1-40.
How often is the magnetic compass
adjusted?
1.
Q u a r t e r l y
2.
Semiannually
3.
Annually
4.
When the deviation exceeds 3°
Figure 1A
COMPUTE TRUE HEADINGS IN ANSWERING
QUESTIONS 1-41 THROUGH 1-43. REFER
TO FIGURE 1A.
1-41.
What is the value of A?
1.
354
2.
356
3.
004
4.
000
3
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