
NAV1 MID QUIZ 3 (1242)
Authored by Earl Tugap
Other
University
Used 2+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The time interval between the transmission and reception of a pulse in an echo sounder is used to determine:
Ship’s location
Water depth
Water salinity
Atmospheric pressure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a component of an echo sounder?
Transducer
Amplifier
Pulse generator
Converter
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The term "Under Keel Clearance" (UKC) refers to:
The space between the seabed and the keel of a ship
The total height of a ship
The ship's total depth
The distance from waterline to the top of the mast
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The process of compensating for the ship’s draft when reading the depth on an echo sounder is known as:
Gain adjustment
Depth correction
Zero adjustment
Phasing
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the velocity of sound in water affected?
It changes with the water depth
It remains constant
It changes with temperature, salinity, and pressure
It only changes with temperature
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The error caused by ferrous materials in a ship is called:
Magnetic variation
Compass deviation
Magnetic heading
True bearing
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary cause of magnetic deviation on ships?
Earth's magnetic poles
Compass calibration
The ship’s own magnetism
Incorrect heading
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