Raymarine C140w, C90w manual Using radar to measure distances, ranges, and bearings

Models: C90w C140w

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9.10Using radar to measure distances, ranges, and bearings

When you are using the radar application, you can measure distances, ranges and bearings in a variety of ways.

These options are detailed in the table below:

 

Distances

 

 

 

Between

Range From

 

Functions

Points

Your Vessel

Bearings

Range Rings

Yes

Yes

No

 

(approximate

(approximate

 

 

distance)

range)

 

Cursor

No

Yes

Yes

 

 

 

 

Variable Range

No

Yes

No

Markers (VRMs)

 

 

 

Electronic

No

No

Yes

Bearing Lines

 

 

 

(EBLs)

 

 

 

Floating VRMs

Yes

No

No

 

 

 

 

Floating EBLs

No

No

Yes

 

 

 

 

Measuring using the range rings

Use the range rings to gauge the approximate distances between points. Range rings are concentric circles displayed on the screen and centred from your boat at pre-set distances. The number and spacing of the rings changes as you range in and out.

Measuring using the cursor

To measure the bearing and range from your boat to a specified target, move the cursor to the appropriate position on the screen.

Note: If cursor position is not shown in the Databar, go to Menu > Databar Setup > Configure.

Measuring using Variable Range Markers (VRMs)

A Variable Range Marker (VRM) is a circle centred on your vessel’s position and fixed with respect to the heading mode. When this circle is adjusted to align with a target, its range from your boat is measured and displayed on the ADJUST VRM softkey. The data is also displayed if you select the VRM with the cursor.

Using radar

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Raymarine C140w, C90w manual Using radar to measure distances, ranges, and bearings, Measuring using the range rings