 
815.
816.
817.
818.
819.
820.
821.
For purposes of DR, how far will a
ship travel in a half hour if the
ship's speed is 21 knots?
1.
10.5 mi
2.
10.5 nmi
3.
21.0 mi
4.
21.0 nmi
A nautical mile is equal to how
many yards?
1.
1,000
2.
1,500
3.
2,000
4.
2,500
Which of the following formulas for
figuring time, distance, and speed
is correct?
1.
Time = distance
¸
speed
2.
Distance = speed
´
time
3.
Speed = distance
¸
time
4.
Each of the above
If a ship travels 18,800 yards, how
many nautical miles has the ship
covered?
1.
8.2
2.
8.8
3.
9.4
4.
9.8
If a ship travels 6.1 nautical
miles, how many yards has the ship
covered?
1.
12,200
2.
11,800
3.
10,400
4.
6,100
If a ship travels 87 nautical miles
in 6 hours, what speed did the ship
make good?
1.
12.7 kn
2.
14.5 kn
3.
15.3 kn
4.
16.7 kn
The time is 0800, the ship's
position is 25°47'N latitude and
47°16'W longitude, and the ship's
head is 000°T. What speed is
required to reach position 27°22'N
latitude and 47°16'W longitude by
1430?
1.
13.0 kn
2.
14.0 kn
3.
14.5 kn
4.
15.5 kn
822.
How much time will it take a ship
to travel 16.0 nautical miles at a
speed of 18 knots?
1.
53.5 min
2. 53.0 min
3. 52.0 min
4.
51.0 min
823.
What distance will a ship travel if
the ship's speed is 17.5 knots for
45 minutes?
1. 12.5 nmi
2.
12.7 nmi
3. 13.0 nmi
4.
13.5 nmi
824.
The 3minute rule states that a
ship's speed in knots is equal to
the distance traveled in yards over
3 minutes divided by 100.
1. True
2. False
WHEN ANSWERING QUESTIONS 825 AND 826,
REFER TO THE 3MINUTE RULE.
825.
How many yards will a ship travel
in 3 minutes at a speed of 7.4
knots?
826
827.
828.
1.
74
2.
740
3.
7,400
4.
74,000
Your ship travels 8,400 yards in 12
minutes. What is your ship's
speed?
1.
18.0 kn
2.
19.5 kn
3.
20.0 kn
4.
21.0 kn
What is the function of the
nautical slide rule?
1.
To simplify time, speed, and
distance solutions
2.
To plot courses
3.
To figure direction
To use the nautical slide rule,
enter two known variables on the
appropriate scales and the third
value can be obtained.
1. True
2. False
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