問題一覧
1
What color is a special buoy?
Yellow
2
What is the purpose of special buoy in navigation?
to indicate a special area/feature
3
How did the navigators determine the vessel's position before election charting technology
C. Both A and B
4
Why do nautical chart jave legal significance in maritime accident?
because they have critical record for revonstructing their vent and the signing liability
5
what is NOT a purpose of nautical chart?
to predict the rise and fall of water
6
GPS impacted the chart accuracy in a way as EXCEPT?
it has resulted a new NOAA chart production
7
What is the significance of WGS 84 in surface navigation?
it is the same as the WGS 60, 66, 72 for surface navigation
8
Which WGS version was developed in 1960?
WGS 60
9
What type of projection is the Lambert Conformal Projection?
Conic projection
10
What is the distinguishing feature of a Mercator Projection?
expansion of both meridian and parallel in the same ratio with increased latitude
11
What is the Mercator projection commonly used for maritime navigation?
to show rhumb lines as straight lines
12
What is the chart datumn?
An approximation of the actual mean height of sea level.
13
How is an ellipsoid uniquely defined?
By specifying the semi-major axis and the flattening.
14
What is the purpose of the geoid in geodetic applications?
To approximate mean sea level (MS) heights.
15
How many primary reference surfaces for the Earth are used in geodetic applications?
Three
16
Which of the following is NOT a purpose of electronic navigation?
Weather forecasting
17
What is the purpose of an echo sounder on a ship?
To send sound wave pulses for navigation
18
What is the definition of navigation?
The process of directing the movements of a craft from one point to another safely and at the shortest possible distance.
19
What is the purpose of a passage plan in navigation?
To guide the vessel's safe passage by determining the most favorable route
20
What is the purpose of piloting in navigation?
To determine the position of a vessel relative to geographic points
21
What is electronic navigation?
Navigation involving the use of electronics in any way
22
Which of the following is NOT a method of radionavigation?
Deduced Reckoning
23
What is the main function of a passage plan?
To gather safety and navigation information for a safe voyage
24
What is the purpose of RADAR ARPA (Automatic Radar Plotting Aid)?
To calculate collision avoidance data
25
What is dead reckoning in navigation?
Determining position by advancing a known position for courses and distances
26
Why is it necessary to project the surface of a sphere onto a developable surface?
To transfer points on the surface of a sphere to a plane.
27
What is geoid?
An equipotential surface that would coincide with the mean ocean surface of the Earth if the oceans and atmosphere were in equilibrium.
28
What is the difference between an ellipsoid height and a geoid height?
An ellipsoid height is the distance a given point is above or below the ellipsoid surface, while a geoid height is the distance the geoid surface is above or below the ellipsoid surface.
29
What are the five basie buoys, basic buoy ships mention in the voyage system?
can, cone, sphere, pillar spark
30
What color are reserved for lateral?
red and green
31
What are the 5 types of marks provided by the IALA maritime voyage system?
lateral marks, cardinal marks, isolated danger marks, safe water marks, special marks
32
What are the two principle of buoys system make shore in the system?
lateral and cardinal system
33
What do range lights provide insight for maritime?
horizontal vessel positioning
34
What does a range consist of?
two or more beacons
35
What is the characteristic of an aid of the navigational light?
the sequence of light and dark periods within the specify time period
36
What are the buoys using for?
all of the above
37
What was the shore line shown in the charts represents?
mean high water line
38
In which year did the United States start producing certain new nautical charts in meters?
1972
39
Which organizations approved the standard format for numberings types and symbol and abbreviations on navigational charts?
IHO
40
How are aids to navigational shown in nautical charts?
all of the above
41
What does a head line symbolizes on in nautical chart?
shoreline
42
How are depths indicated on in nautical chart?
all of the above
43
What is the seale of harbor chart?
larger than 1:50,000
44
What is the purpose of the sailing chart?
to be used for plotting, fixing position at sea and plotting dead reckoning in the voyage
45
How are nautical charts classified according to scale?
small scale chart are used for route planning while larger scale chart are used as the vessel approaches run
46
What are the advantage of using electronic chart over paper chart?
all of the above
47
What is the legal equivalent of the paper chart in which certain specification?
ECDIS