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Flash Cards > NAV-1 Reviewer > Flashcards

NAV-1 Reviewer Flashcards

1
Q

It’s a geographic information system used for nautical navigation. It complies with International Maritime Organization (IMO) regulations and serves as an alternative to paper nautical charts.

A

Electronic Chart Display and Information System (ECDIS)

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2
Q

It’s the global standard-setting authority for the safety, security and environmental performance of international shipping.

A

International Maritime Organization (IMO)

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3
Q

It’s an intergovernmental organization representing hydrography.

A

International Hydrographic Organization (IHO)

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4
Q

What are the two main types of ECDIS?

A

Electronic Navigational Chart (ENC)
Raster Navigational Chart (RNC)

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5
Q

It’s a device that emits radio waves to detect objects by analyzing the reflected waves. It helps determine the position and speed of objects such as ships and land features.

A

RADAR (Radio Detecting and Ranging)

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6
Q

What is the primary purpose of radar?

A

To detect objects and their position and speed by analyzing reflected radio waves.

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7
Q

The development of radar initiated with ___________ experiments in the __________ demonstrating that radio waves reflect off metallic objects, eventually leading to its adoption for maritime use.

A

Heinrich Hertz’s and 19th century

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8
Q

Name the two types of radar.

A

S-band Radar (long-range) and X-band Radar (better resolution for smaller targets).

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9
Q

Primarily designed to aid in collision avoidance by automating the plotting of radar targets.

A

Automatic Radar Plotting Aid (ARPA)

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10
Q

Enables investigators to review protocols and guidelines leading up to an incident to determine its cause.

A

VOYAGE DATA RECORDER (VDR)

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11
Q

MAIN PARTS OF DVR:

A

Data Collection Unit (DCU)
Data Recording Unit (DRU)
Sensor interface unit

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12
Q

Essential bridge equipment used to measure the ship’s speed through water and the distance traveled.

A

SPEED LOG

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13
Q

A system for transmitting navigational warnings and weather forecasts from designated coast radio stations.

A

NAVTEX (Navigation Telex)

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14
Q

The helmsman manually controls the steering without mechanical assistance.

A

Manual Steering

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15
Q

A system that maintains a predetermined course without human intervention.

A

AUTOPILOT

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16
Q

Types of AUTOPILOT:

A

Adaptive Autopilot (ADPT)
and
PID (Proportional Integral Derivative Control):

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17
Q

What is NAVTEX used for?

A

Transmitting navigational warnings and weather forecasts from coast radio stations.

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18
Q

Steering modes:
Directly connects steering input to rudder movement.

A

Follow Up Mode

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19
Q

Steering modes:
It allows for direct and immediate control of the rudder without the steering control device being proportional to the rudder’s position.

A

Non-Follow Up Mode

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20
Q

What is the main purpose of Automatic Radar Plotting Aid (ARPA)?

A

To aid in collision avoidance by automating the plotting of radar targets.

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21
Q

What role does a Voyage Data Recorder (VDR) play?

A

Aids in accident investigation, comparable to an aircraft’s black box.

22
Q

It’s a critical tool used in maritime operations primarily for measuring water depth and ensuring safe navigation by detecting underwater obstacles such as rocks and reefs.

A

ECHO-SOUNDER

23
Q

Components of an Echo-Sounder

A

 Transducer
 Pulse Generator
 Amplifier
 Recorder

24
Q

allowing operators to control the vessel’s direction and maintain its course safely and efficiently.

A

steering control system

25
Q

Key Components of a Steering Control System

A

Autopilot
Steering Wheel or Joystick
Rudders
Control Panels and Displays

26
Q

What are the two types of autopilot systems?

A

PID (Proportional Integral Derivative ) and Adaptive Autopilot (ADPT).

27
Q

These systems use hydraulic fluid to transmit power from the steering wheel to the rudder.

A

Hydraulic Steering Controls

28
Q

What is Autopilot?

A

A system that maintains a predetermined course without human intervention.

29
Q

What is ECDIS?

A

It’s a geographic information system used for nautical navigation.

30
Q

It’s an advanced tracking system designed to enhance maritime safety by automating the exchange of key vessel information.

A

AUTOMATIC IDENTIFICATION SYSTEM (AIS)

31
Q

Types of AIS

A

Class A: Required for all vessels over 300 Gross Tonnage (GT)
and
Class B: often used by recreational boats.

32
Q

Types of Echo-Sounders

A

Single-Beam

Multibeam Sonar

33
Q

Information Transmitted by AIS:

A

 IMO number
 Ship name and call sign
 Dimensions of the vessel (length and beam)
 Type of ship
 Location of the position-fixing antenna
 Maritime Mobile Service Identity (MMSI) number

34
Q

What does GPS enable ship crews to determine?

A

Exact Location, speed, direction, and time.

35
Q

Information Transmitted by AIS:
Dynamic Information (varies with speed and course):

A

 Current position with accuracy
 Timestamp of position (UTC)
 Course Over Ground (COG)

36
Q

The NAVTEX receives the following messages:

A

A= Navigational Warning
B= Meteorological Warning
C= Ice Report
D=Search and Rescue Information
E= Meteorological Forecast
F=Pilot Messages

37
Q

Types of Speed Log:

A

Electromagnetic Log
Pitometer Log
Doppler Log
Impeller Log

38
Q

A safety system on ships designed to ensure that the crew remains alert while navigating.

A

Bridge Navigational Watch Alarm System (BNWAS)

39
Q

Steering Mode
Three Operational Modes

A

Automatic Mode
Manual On Mode
Manual Off Mode

40
Q

Importance of BNWAS

A

It ensures constant monitoring of navigation activities.

41
Q

An interconnected system of various equipment and controls on the ship’s bridge, allowing centralized access to navigation and command information for efficient vessel management.

A

Integrated Bridge System (IBS)

42
Q

It’s an international communication system that ensures maritime safety by enabling quick information exchange between ships and shore stations during distress situations.

A

Global Maritime Distress and Safety System (GMDSS)

43
Q

GMDSS consist of the following:

A

VHF:
MF/HF:
Search and Rescue transponder (SART)
Emergency Position-Indication Radio Beacon
(EPIRB)
International Maritime Satellite Organization (Inmarsat)

44
Q

It’s a advanced tracking system designed to enhance maritime safety by automating the exchange of key vessel information.

A

AUTOMATIC IDENTIFICATION SYSTEM (AIS)

45
Q

Types of AIS:

A

Class A:Over 300 GrossTonnages
Class B: Recreational Boats

46
Q

How does it give and receive Information of a ship

A

AIS uses transceivers installed on ships to automatically send and receive information.

47
Q

Information Transmitted by AIS:

A

Static: Maritime Mobile Service Identity (MMSI) Number
IMO Number
Ships Name and Call Sign
Type of Ship

Dynamic
Current Position with accuracy
Timestamp of Position (UTC)
Course Over Ground (COG)

Voyage:
Destination and Estimated time of Arrival (ETA)
Route Plan with Way Points
Ship’s Draft

48
Q

Uses hydraulic fluid to transfer the steering force to the rudder or outboard motor, allowing for smoother and more precise control, especially in larger boats.

A

Hydraulic Steering Control System

49
Q

What is the purpose of the Automatic Identification System (AIS)?

A

To enhance safety by automating exchange of key vessel information.

50
Q

What does an echo-sounder measure?

A

Water Depth and Detects underwater Obstacles

51
Q

What is the function of the steering system in a vessel?

A

To guide the ship along its intended course.

Flash Cards (10 decks)

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