ECDIS Standards and Electronic Charts Quiz

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Questions and Answers

Which of the following is not a mandatory sensor according to performance standards?

Transmitting heading device

Speed and measuring device

Ships identification device

Position force (correct)

What is the minimum display size required for ECDIS?

21 inches (correct)

19 inches

22 inches

20 inches

When the background color of the own ship position on ECDIS top bar is grey, what does it indicate?

Dead reckoning

Position inaccurate (correct)

Position source of error

Position highly accurate

Which feature in ECDIS helps in reducing the amount of displayed information?

Scamin Signup and view all the answers

What is the navigational purpose of the ENC intended for coastal navigation?

Coastal Signup and view all the answers

What is the alarm called when the operator specifies the maximum stray distance on either side from own ship?

Cross track error Signup and view all the answers

Which standard compliments the S-52 standards?

IEC 61174 Signup and view all the answers

What is the major benefit of a vector system electronic chart?

Ease of correction Signup and view all the answers

What is the primary difference between raster and vector charts?

Raster charts are made of pixels; vector charts are made of paths. Signup and view all the answers

Which type of chart retains all the information found on a paper chart?

Raster charts Signup and view all the answers

What is an advantage of using vector charts?

They require less electronic storage space. Signup and view all the answers

What should be checked to avoid hazards while navigating using vector charts?

The appropriate zoom level and scale Signup and view all the answers

Why might a mariner face challenges when using vector charts?

They present less information upfront and may require training to use effectively. Signup and view all the answers

What potential risk might arise from relying solely on vector charts during navigation?

Underestimating the necessity of checking the appropriate zoom level Signup and view all the answers

What is a key advantage of using vector charts for navigation?

They require less electronic storage space and are scalable. Signup and view all the answers

ECDIS has the capacity to preserve the record of the track for the previous route. How long can this information be retained?

12 hours Signup and view all the answers

Which of the following machinery information can ECDIS devices display?

All of the choices Signup and view all the answers

What could be the consequence of improper use of ECDIS?

Led to ship groundings and collisions Signup and view all the answers

Which statement is FALSE regarding navigational practices?

Lookouts do not need to take bearings for cross-checks Signup and view all the answers

Which of the following is NOT a reason for accidents when using ECDIS?

The ECDIS scale in use was aligned with the radar Signup and view all the answers

What ECDIS alarm activates when the navigator crosses a depth less than the minimum set?

Vessel crossing safety contour Signup and view all the answers

What competence is required by an officer-in-charge of a navigational watch on a ship of 500 GRT or more?

Plan and conduct a passage and determine position Signup and view all the answers

What is the navigational purpose of an Electronic Nautical Chart (ENC) for coastal navigation?

Harbor Signup and view all the answers

What type of objects store information about other objects but are not real-world objects?

Meta Signup and view all the answers

What regulation mandates that ships operating on international routes must be equipped with ECDIS?

SOLAS Regulation V/19 Signup and view all the answers

What is the IMO Resolution adopted on 23rd November 1995 regarding ECDIS Performance Standards?

IMO Resolution A.817(19) Signup and view all the answers

Which type of electronic chart is referred to as intelligent?

Vector Signup and view all the answers

When is the last date by which all ships must be equipped with ECDIS, regardless of size?

1 July 2018 Signup and view all the answers

Which of the following represents a disadvantage of using ECDIS?

Over reliance Signup and view all the answers

What is the standard specification for chart content and display aspects of ECDIS?

IHO S-52 Signup and view all the answers

Which IMO resolution, made in 1998, allows the use of ECDIS in RCDS mode?

MSC 86 (70) Signup and view all the answers

What type of chart is simply a bitmap image created by scanning a paper chart?

Raster chart Signup and view all the answers

Study Notes

ECDIS Overview

ECDIS stands for Electronic Chart Display and Information System, a navigation tool that replaces traditional paper charts.
Enhanced situational awareness and navigational accuracy are significant benefits of using ECDIS.

IMO Resolutions

IMO Resolution A.817(19) was adopted on 23rd November 1995, establishing performance standards for ECDIS.
Resolution MSC 86 (70) in 1998 permitted ECDIS to operate in Raster Chart Display System (RCDS) mode.

Types of Electronic Charts

Vector charts are classified as electronic navigational charts, containing detailed ship navigation data.
Raster charts are bitmap images representing scanned paper charts, used for navigation as well.

ECDIS Standards

IHO S-52 standards govern chart content and display aspects of ECDIS.
IHO S-57 standard focuses on data content for electronic navigational charts.

SOLAS Regulations

Regulation V/19 of SOLAS mandates that ships on international routes must be fitted with ECDIS.
All ships must have ECDIS installed regardless of size by July 1, 2018.

Advantages of ECDIS

ECDIS provides improved availability of electronic charts, speed, and accuracy in navigation.
Reduces risks of over-reliance through integration with other navigational aids and traditional techniques.

Alarm Systems

Alarm deafness can occur if alarms are too frequent, causing navigators to ignore them.
ECDIS triggers alarms if the ship crosses a set safety contour or depth threshold.

Competences for Navigational Officers

Officers in charge must plan and conduct passage using ECDIS and demonstrate operational competency.

Sensor and Display Requirements

Mandatory sensors include continuous position sources and speed measuring devices; LORAN-C/e-LORAN are not required.
Minimum display size for ECDIS is 21 inches.

Vector vs. Raster Charts

Raster charts retain all information from paper charts, whereas vector charts provide enhanced intelligence for navigation.
Vector charts require less storage space and are scalable, offering better performance in varying zoom levels.

Errors and Challenges

Improper use of ECDIS can lead to accidents, such as groundings and collisions, due to lack of awareness.
Mariners may face challenges with vector charts due to their complexity and the need for training.

ECDIS systems can display information from various sensors, including ship machinery and environmental data.
They can store track records for up to 12 hours, enhancing post-voyage analysis and navigation safety.

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Description

Test your knowledge on the IMO resolutions and performance standards related to Electronic Chart Display and Information Systems (ECDIS). This quiz covers various types of electronic navigational charts and their specifications. Challenge yourself with questions on intelligent charts and classifications of electronic charts.