CMRT CMRT Navigation Integration & Display Systems 3

Question 1

Which radar range scale is most appropriate for harbor entry and collision avoidance at close quarters?

Accepted Answer

0.5 to 1.5 nautical miles

Answer

48 nautical miles

Answer

12 nautical miles

Answer

96 nautical miles

Question 2

What is the role of the heading sensor interface in a marine radar system?

Accepted Answer

Provides vessel heading to stabilize the radar picture and enable true bearing readout

Answer

Controls transmitter power output

Answer

Feeds engine RPM data to the display

Answer

Manages radar inter-switch configuration

Question 3

What is 'target swap' in ARPA, and why is it dangerous?

Accepted Answer

When ARPA incorrectly transfers tracking data between two nearby targets, producing false motion vectors

Answer

A planned maneuver to exchange course with another vessel

Answer

A display mode that swaps radar and chart overlay layers

Answer

A calibration procedure to swap primary and secondary scanners

Question 4

Which IMO standard defines performance requirements for shipborne radar equipment?

Accepted Answer

IMO Resolution MSC.192(79)

Answer

IMO Resolution A.468(XII)

Answer

SOLAS Chapter II-2

Answer

IEC 60945

Question 5

In radar display terminology, what is 'persistence' or 'afterglow'?

Accepted Answer

The continued glow of a radar return on the display after the antenna sweep has passed, showing target history

Answer

The warm-up time required before a magnetron transmits

Answer

The duration of each radar pulse

Answer

The delay before ARPA establishes a track

Question 6

What does 'interswitch' capability allow in a multi-radar installation?

Accepted Answer

Any display to connect to any scanner on the vessel, providing operational flexibility

Answer

Automatic switching between X-band and S-band frequencies

Answer

Remote firmware updates across all radar units simultaneously

Answer

Sharing GPS data between bridge and engine room