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Second Semester (BSMT) > TERNAV (FINALS) > Flashcards

TERNAV (FINALS) Flashcards

1
Q

What is the primary purpose of the Admiralty List of Radio Signals?

A

To provide information on vital maritime communication and navigation services

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2
Q

What are Radio Navigational Warnings (RNWs) used for?

A

To alert mariners about new navigational hazards and changes

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3
Q

What are the two main formats in which radio time signals are transmitted?

A

Audible voice messages and Morse code

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4
Q

What information can be found in the ADMIRALTY List of Radio Signals regarding AMVER?

A

Procedures for reporting missing persons at sea

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5
Q

Which publication does NOT exist in the context of maritime radio communications?

A

I DON’T KNOW

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6
Q

How is Pub. No. 117 updated?

A

By downloading software updates or through NTM

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7
Q

What limitations of maritime radio communication systems are explained in Pub. No. 117?

A

The range and effectiveness of various radio stations

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8
Q

What is the main function of radio time signals for mariners?

A

To ensure accurate timekeeping and synchronization

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9
Q

What does Volume 6 of the ADMIRALTY List of Radio Signals focus on?

A

Pilot services, vessel traffic systems, and port operations

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10
Q

What type of information does ADRS 1, 3, 4, and 5 provide to bridge crews?

A

Assistance with routine radio communications and safety information

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11
Q

What does a roundabout in a TSS represent?

A

An area for vessels to change course gradually

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12
Q

What type of information do Routeing Charts NOT include?

A

List of Shipping companies and its Owners

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13
Q

What information do wind roses on Routeing Charts provide?

A

The prevailing wind direction and frequency for each month

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14
Q

What are the typical scales used in Admiralty Routeing Charts?

A

1:5,000,000, 1:10,000,000, and 1:20,000,000

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15
Q

How do Routeing Charts assist bridge crews in high-level route planning?

A

They cover large geographical areas, enabling strategic route selection.

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16
Q

What is the function of traffic lanes in a traffic separation scheme (TSS)?

A

To separate opposing streams of traffic for safer navigation

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17
Q

What is the main purpose of load lines depicted on Routeing Charts?

A

To show the maximum safe draft of a vessel based on its stability

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18
Q

How do precautionary areas differ from areas to be avoided on Routeing Charts?

A

Areas to be avoided are completely restricted to all vessels, while precautionary areas require extra caution.

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18
Q

What is the benefit of using monthly charts in Routeing Charts?

A

They allow mariners to consider seasonal variations in weather and currents.

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19
Q

What is the primary purpose of Admiralty Routeing Charts?

A

To assist in passage planning for ocean voyages

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20
Q

How can understanding tidal patterns be helpful to navigation?

A

to plot safe passages through shallow coastal water

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21
Q

Why might the ship navigator need to consult from both tidal charts and tide tables?

A

they provide different perspectives on the same information allowing for a more comprehensive understanding of tidal waters

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22
Q

What is the purpose of using chart datum when displaying tidal information?

A

To provide a consistent reference point for measuring tides.

23
Q

How can atmospheric pressure affect the height of the tide?

A

Rising pressure increases the water level while falling pressure decreases it.

24
Q

What factors can cause short-term fluctuations in sea level, besides tide?

A

All of the above.

25
Q

Which of the following statements is true about tidal irregularities caused by waves?

A

They have various periods and can disrupt the regular patterns of high and low tides.

26
Q

What factors can cause irregularities in the timing of high and low tides?

A

Strong winds and changes in atmospheric pressure.

27
Q

What is the difference between MSL and chart datum?

A

MSL is global average while chart datum is specific to a location.

28
Q

Where is MSL typically measured?

A

At a specific time station with reference level.

29
Q

What does MSL represent if tides are not present?

A

The level of the sea surface in the absence of tides.

29
Q

What is the difference between MHWS spring and mean low water spring?

A

MHWS is the average height of all high spring tides while MLWS is the average of all low spring
tides.

30
Q

What is the term used to describe the average water level at any moment excluding wave variations but
including tides and surges?

A

Still water level

31
Q

What information is provided in tide tables?

A

Predictions of daily high and low tides times and heights.

32
Q

How often in a cycle do the values of high water spring, high water neap, low water neap and low water
spring typically change?

A

Approximately every 18.6 years considering astronomical factors.

33
Q

What is horizontal movement?
- current but since there’s no current in the option the answer is

A

tidal stream

34
Q

What is the difference between standard port and secondary port?

A

Standard port have tide predictions based on long-term observations while secondary ports don’t.

35
Q

What is the main function of tide tables?

A

To predict daily high and low.

36
Q

What type of information do routing charts NOT include?

A

List of Shipping companies and its Owners

37
Q

What is the function of traffic lanes in a (TSS)

A

to separate opposing streams of traffic for safer navigation

38
Q

What does roundabout in GMDSS represent?

A

An area for the vessel to change course gradually.

39
Q

How do precautionary areas differ from areas to be avoided?

A

Areas to be avoided are completely restricted to all vessel. While precautionary areas require extra
caution.

40
Q

Areas to be avoided are completely restricted to all vessel. While precautionary areas require extra
caution.

A

The prevailing wind direction and frequency for each month

41
Q

What is the benefit of using monthly charts in routing charts?

A

They allow mariners to consider seasonal variations in weather and currents.

42
Q

What is the main purpose of load lines depicted on routine charts?

A

To show the maximum safe draft of a vessel based on its stability.

43
Q

What are the typical scales used in Admiralty routing charts?

A

1:5,000,000, 1:10,000,000, and 1:20,000,000

44
Q

What type of traffic is permitted in inshore traffic zone?

A

Only vessels with specific authorization or exemption.

45
Q

How do routing charts assist bridge crew/navigators in high level route planning?

A

They cover large geographical areas, enabling strategic route selection.

46
Q

What type of information does ADRS 1,3,4 and 5 provide to the navigators?

A

Assistance with routing, radio communications and safety information.

47
Q

What is the main function of radio time signals for mariners?

A

To ensure accurate timekeeping and synchronization.

48
Q

What is RNW (Radio Navigational Warning) used for?

A

To alert mariners about new navigational hazard and changes.

49
Q

Which publication does not exist in the context of maritime radio communication?

A

Radio time signal book.

50
Q

What does additional information does ADRS 2 offered compared to ADRS 1,3,4 and 5?

A

Positional and timekeeping references worldwide.

51
Q

What are the primary channels through which radio navigational warnings are disseminated?

A

Area warnings and NAVTEX broadcast.

52
Q

What type of information is NOT typically included in the admiralty list of radio signals?

A

Description of the capabilities and limitations of radio operators.

53
Q

What limitations of maritime radio communication systems are explained in Pub. No. 117?

A

The range and effectiveness of various radio stations

54
Q
A

Second Semester (BSMT) (11 decks)

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