Bridge Navigation & Deck Operations

Radar & ARPA Competence Test

This test covers the principles and practical use of marine radar and ARPA systems for safe navigation and collision avoidance. It includes questions on radar theory, equipment operation, echo interpretation, CPA/TCPA assessment, radar plotting, and compliance with COLREG. Ideal for navigational officers preparing for operational or management certification.

Питань 15

Час 9 min

Мова Англійська

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Питання 1

The preferred method of radar position fixing for greatest accuracy is ….

A taking a radar range and visual bearing.

B taking a radar range and radar bearing.

C taking several radar ranges.

D taking several radar bearings.

Питання 2

The function of the waveguide is to ….

A conduct pulses to and from the scanner.

B generate the RF pulses.

C shape the beam in vertical plane.

D block the transmitter during reception.

Питання 3

Weaker echoes are converted to signals of detectable strength by the ….

A local oscillator.

B Intermediate Frequency amplifier.

C limiter circuit.

D mixer crystals.

Питання 4

In restricted visibility, risk of collision can best be assessed by ….

A listening for the target’s sound signals.

B posting additional lookouts.

C watching the target’s radar bearing and range.

D establishing radio communication with the target.

E watching the target’s radar bearing and range

Питання 5

When choosing objects for position fixing by radar ranges you should, if possible, avoid ...

A sloping land features.

B large prominent features.

C small isolated features.

D steep faced features.

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