ECDIS

Question 1

What is Compilation scale?

Answer 1

The scale at which the data was originally compiled, which can be a scale at which the survey was conducted.

Question 2

What is the Scamin function?

Answer 2

The smallest scale at which an object will not be displayed.

Question 3

What are the dimension requirements for chart display?

Answer 3

270mm x 270mm

Question 4

What are the minimum formats required by the IMO

Answer 4

• North up
• True motion.

Question 5

What is required for ECDIS to be a primary means of navigation?

Question 6

What is IHO S57?

Answer 6

This standard is a simplified model of the reality and consists of georeferenced and non-georeferenced data.

Question 7

What is IHO S52?

Answer 7

The standard that defines the presentation of the information on the ECDIS screen which has been encoded according to the S57 standard.

Question 8

What is IHO S61?

Answer 8

This standard sets out the calculations with regards to the plotting of WGS84 positions onto electronic charts.

Question 9

What is IHO S63?

Answer 9

This standard specifies a method of securing ENC information and maintaining the integrity on an ENC service with multiple data services serving a large customer base.

Question 10

What are the ENC chart scale categories?

Answer 10

• Overview
• General
• Coastal
• Approach
• Harbour
• Berthing

Question 10

What does the presence of jail bars mean?

Answer 10

25% or more of chart information is not being show at the current scale.

Question 11

What does CATZOC mean?

Answer 11

Categoric Zone of confidence

Question 12

What are the 6 CATZOC categories?

Answer 12

• A1 = 6 stars
• A2 = 5 stars
• B = 4 stars
• C = 3 stars
• D = 2 stars
• Avoid U = Unassessed