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Radar Navigation. Test 23

Online Maritime Tests > Tests > Radar Navigation. Test 23

Radar Navigation. Test 23

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The alteration of own ship's course or speed required to give a desired Closest Point of Approach (CPA) can be obtained from the _____

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radar plot
collision rules
ship's data book
radar tables

An operational check you should carry out when a radar set is installed is to _____

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measure the duration of pulse length.
check the adjustment of the parallel index.
check the accuracy of the heading marker.
measure the frequency of the magnetron.

Radar navigational techniques should _____

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only be used at night
not be used in bad weather
only be used in poor visibility
be practised in clear visibility

A reflection plotter is a radar device which _____

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is an automatic plotting device
is fitted in the transceiver
is mounted in the scanner unit
fits directly over the display

Attenuation is likely to cause _____

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increased detection ranges.
multiple target echoes.
reduced detection ranges.
shadow or blind sectors.

The use of radar ranges in preference to radar bearings for position fixing is because _____

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suitable targets are easier to find
they are more accurate
they are easier to take
they are quicker to take

Positions obtain by radar _____

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should only be used in restricted visibility
should be checked by other available means
cannot be relied on for navigation
should be used independently of other aids

Sea clutter is caused by reflections from _____

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the blank surface of the sea.
the sides of waves.
small craft and buoys.
areas of precipitation.

Sea clutter echoes appear on the radar screen as _____

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a mass of small echoes around the screen centre
a mass of small echoes with an irregular shape
a group of echoes within a shadow sector
a group of echoes at a constant range

A true motion radar display shows _____

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a target's actual movement
a target's movement relative to own ship
a target stopped at the screen centre
own ship's movement relative to own ship

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Believe in yourself, take on your challenges, dig deep within yourself to conquer fears. Never let anyone bring you down. You got to keep going.

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The biggest challenge after success is shutting up about it.

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Radar Navigation. Test 23

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