NAV 6 NEROD's

15. Which of the following best describes the advantages of an ECDIS?

Automatic chart updating
Simple Voyage planning
Anti - grounding warning

I, II, and III

I only

I and III

II and III

Which of the following best describes the advantages of a Vector charts?

Chart information stored in layers
It is possible to select safety depth and safety control
Vector charts can generally be displayed more quickly than raster charts

I only

I, II, and III

I and III

II and III

Which of the following best describes the disadvantages of Vector charts?

Vector chart is technically far more complex than raster charts
Vector chart take longer and cost more to produce than a raster chart
They are easy to edit

I and III

I, II, and III

I and II only

I only

Which of the following best describes the advantages of raster charts?

They are direct and exact copies of paper charts
Raster charts are not simple and easy to use
They cost less to produce

I and II only

I and III

I, II, and III

I only

Which of the following best describes the disadvantages of raster charts?

The display cannot be customized
Raster charts cannot be sensibly rotated to head-up or other orientation
Raster charts are an intelligent chart

I and III

I and II only

I only

I, II, and III

What is true regarding the power supply for ECDIS?

It should be possible to operate ECDIS and all equipment necessary for its normal functioning when supplied by an emergency source of electrical power in accordance with the appropriate requirements of chapter II-1 of the 1974 SOLAS Convention, as amended.
Changing from one source of power supply to another or any interruption of the supply for a period of up to 45 seconds should not require the equipment to be manually re-initialized.

I & II only

II only

I only

None of above

The ECDIS is capable of performing and presenting the results of at least which of the following calculations?

true distance and azimuth between two geographical positions
geographic position from a known position and distance/azimuth
geodetic calculations such as spheroidal distance, rhumbline, and great circle

I, II & III

I only

I and II

II, and III

What is true regarding route monitoring?

It is possible to display a sea area that does not have the ship on the display (e.g. for a look ahead, route planning), while route monitoring
It is possible to return to the route monitoring display covering own ship’s position immediately by single operator action.
For route monitoring, the selected route and own ship’s position appear whenever the display covers that area
An alarm is given when the specified cross-track limit for deviation from the planned route is exceeded.

I, II, & III

I, II, III & IV

I, & II

I only

Which of the following best describes the advantages of an ECDIS?

Automatic chart updating
Simple Voyage planning
Anti - grounding warning

II, and III

I only

I, II, and III

I, & II

An alarm in ECDIS is given when a vessel is ________.

crossing a safety contour
deviating from the route
approaching a critical point

I, II & III

II & III

I, & III

I only

An ECDIS provides an indication when ____________.

information is overscale
larger-scale ENC is available
malfunction occurs

I only

I and II only

I, II & III

II & III

What is true regarding route planning?

It should be possible to plan one or more alternative routes in addition to the selected route. The selected route should be distinguishable from the other routes.
It should be possible for the mariner to specify a cross-track limit of deviation from the planned route at which an automatic off-track alarm should be activated.
It should be possible to adjust a planned route alphanumerically and graphically.

I, & III

II & III

I, II & III

I only

What is true regarding voyage recording?

ECDIS can store and be able to reproduce certain minimum elements required to reconstruct the navigation and verify the official database used during the previous 12 hours.
ECDIS can record the complete track for the entire voyage, with time marks at intervals not exceeding 4 hours.
It is possible to manipulate or change the recorded information.
ECDIS should have a capability to preserve the record of the previous 12 hours and the voyage track.

I, II & III only

II & III only

I only

I, II & IV only

When an ECDIS is connected to other equipment ________.

It does not degrade the performance of any equipment providing sensor inputs.
the performance of ECDIS is not degraded below the standard.
the ship’s positioning system, gyrocompass, speed, and distance monitoring device are not degraded.

I, II & III

all of the above

II & III only

I only