JRC JMR-5410-6X - Range and Bearing Measurement Methods; List of Measuring Tools

4-1 Section 4 Range and Bearing Measurement Methods
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APP A
APP B
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Section 4 Range and Bearing
Measurement Methods
4.1 List of Measuring Tools
This equipment is equipped with the following measuring tools to measure the range and bearing.
Measuring tool Function Related section
Cross-Hair Cursor
(Cursor)
Used to measure the range and bearing from
the own ship’s position.
4.3 Using the Cross-hair
Cursor
Range Rings Displays concentric circles having CCRP
(Consistent Common Reference Point) as the
centre at constant intervals in order to be used
as guidance for measuring the range.
4.4 Using the Range Rings
Electronic Bearing
Lines (EBL1/EBL2)
Displays a straight line that specifies an
arbitrary bearing in order to measure the
bearing from own ship.
This equipment is equipped with two electronic
bearing lines (EBL1 and EBL2).
4.5 Using the Electronic
Bearing Line (EBL) and
Variable Range Marker
(VRM)
Variable Range
Markers
(VRM1/VRM2)
Displays a circle that specifies an arbitrary
range in order to measure the range from own
ship.
This equipment is equipped with two variable
range markers (VRM1 and VRM2).
Parallel Index Lines
(PI)
Displays a group of straight lines at equal
intervals in order to be used for complex
measurement and guidance for route.
4.6 Using Parallel Index
Lines (PI)
EBL Manoeuvre
Displays a predictable track when own ship is
turned in order to be used as guidance for
manoeuvring.
4.7 Using the EBL
Manoeuvre
Manual position fix
(Position Offset)
Enables offsetting the own ship’s position with
manual operation.
4.8
Offsetting the Own
Ship’s Position Manually
(Position Offset Function of
Manual position fix)