Chapter 3 Flashcards
1
Q
- Who published the S-57 data? (1)
A
a. IHO
2
Q
- What does manual updating offer? (2)
A
a. Correcting old chart objects
b. Editing existing charts
3
Q
- What is the horizontal datum for geographic positions on an ECDIS? (1)
A
a. WGS-84
4
Q
- What is the difference between a S-57 ENC and other electronic charts? (2)
A
a. An ENC is an officially approved vector chart
5
Q
- What abbreviation has been established by the IMO to describe the charts that must be loaded
into a compliant ECDIS? (1)
A
a. ENC
6
Q
- What is defined in the S-57 Catalogue? (2)
A
a. Objects
b. Attributes
7
Q
- How many object classes can be found in the IHO catalogue? (1)
A
a. 160
