1、Attention is called to the fact that in many cases pipelines are not ______ and charted depths may be decreased by up to 2 meters.
A、A、 concealed
B、
B、 buried
C、
C、 existed
D、
D、 built
2、Depths of {wk.} are to be inserted in the chart.
A、A、 work
B、
B、 wreck
C、
C、 wake
D、
D、 weak
3、For full information regarding the current circulation of the Indian Ocean, ______ Sailing Direction, Current Atlas, etc.
A、A、 watch
B、
B、 look for
C、
C、 see
D、
D、 regard
4、In Admiralty Sailing Directions, STRIPES is the word used to indicate ______ marking.
A、A、 horizontal
B、
B、 vertical
C、
C、 diagonal
D、
D、 vertical or diagonal
5、In the Uniform Cardinal System of Buoyage, a buoy in the eastern quadrant from a danger could ______.
A、A、 be black and white horizontally striped
B、
B、 be black and white vertically striped
C、
C、 have a black top mark
D、
D、 be any of the above
6、The lateral system is used in ____.
A、A、 restricted waters such as shoals, reefs or wrecks
B、
B、 restricted waters such as buoyed channels
C、
C、 open waters such as shoals, reefs or wrecks
D、
D、 open water such as buoyed channels
7、What would be the color of an IALA starboard hand lateral buoy, as seen when sailing toward land, in Europe?
A、A、 Green
B、
B、 Red
C、
C、 Red and green stripes
D、
D、 Black and yellow stripes
8、When reversing, the tidal stream will have a period with little or no effect. This is call the_____.
A、A、 rise
B、
B、 range
C、
C、 slack
D、
D、 spring
9、The average time between two high waters is 12 hours and 25 minutes because this is the time it takes for ______.
A、A、 The sun to be at the opposite side of the moon
B、
B、 The moon to be at the opposite side of the earth
C、
C、 The moon to be at its apogee
D、
D、 The sun and the moon to be on the same side
10、What is the tidal height?
A、A、 Twice the tide amplitude
B、
B、 The range of the tide
C、
C、 The water above the Lowest Astronomical Tide
D、
D、 The height above or under the Mean Level
11、Data relating to the direction and velocity of rotary tidal currents can be found in the ______
A、A、 Mariners Guide
B、
B、 Tidal Current Tables
C、
C、 Nautical Almanac
D、
D、 Tide Table
12、From ______ the mariner can know the data of tide.
A、A、 the sea pilot
B、
B、 the cargo plan
C、
C、 the tide table
D、
D、 the port list
13、Which is a weekly publication advising mariners of important matters affecting navigational Safety ?
A、A、 Light List
B、
B、 Notice to Mariners
C、
C、 Coast Pilot
D、
D、 Sailing Directions
14、In which source could you find the number of a chart for a certain geographic area?
A、A、 Chart No.1
B、
B、 Catalog of Charts
C、
C、 IMO Practical Navigator
D、
D、 IMO Light List
15、All of the following information concerning lighted aids to navigation may be read directly from the light list except the ______
A、A、 location
B、
B、 height of light above water
C、
C、 luminous range
D、
D、 light characteristics
16、The arrangement of charts in the catalogue is _________.
A、A、 on a regional basis
B、
B、 on a national basis
C、
C、 shown orderly
D、
D、 appeared from A to W
17、The datum from which the predicted heights of tides are reckoned in the tide table is _____.
A、A、 mean low water
B、
B、 the same as that used for the charts of the locality
C、
C、 the highest possible level
D、
D、 given in table three of the tide tables
18、Many of the soundings shown on the chart are derived from ______ , Undue reliance should not be placed upon them.
A、A、 complete and often very poor surveys
B、
B、 correct and often very good surveys
C、
C、 inadequate and often very old surveys
D、
D、 adequate and present surveys
19、Lines on a chart which connect points of equal magnetic variation are called ______.
A、A、 magnetic latitudes
B、
B、 magnetic declinations
C、
C、 dip
D、
D、 isogonic lines
20、How is the annual rate of change for magnetic variation shown on a pilot chart?
A、A、 Gray lines on the uppermost inset chart
B、
B、 Red lines on the main body of the chart
C、
C、 In parenthesis on the lines of equal magnetic variation
D、
D、 Annual rate of change is not shown
