Glossary; Terms - Raytheon RayChart 620 Operation Manual

Glossary

Glossary
This glossary explains the terms and abbreviations that may be
unfamiliar to the reader.
G.1 Terms
Bearing
Course
Dedicated key
Heading
Home Mode
Latitude
Longitude
Orientation
Panning
Plotter Mode
Route
SeaTalk
The direction of an object from the observer. Can be
stated as an angle relative to either true or magnetic
North.
The direction in which the vessel is to be steered or is
being steered. The direction of travel through the
water. Can be stated as °Magnetic or °True.
A key with a permanently defined function or
functions. These keys are labelled on the front panel
of the RayChart.
The direction in which the vessel is pointing.
The mode in which the cursor is hidden, and the
cursor data box gives the vessel's position and the
range and bearing to the active waypoint (if any).
Angular measure 0 to 90° North and South from the
equator. On a chart, these lines are drawn from right
to left.
Angular measure 0 to 180° East and West of the
prime meridian (0°) at Greenwich, England. On a
chart, these lines are drawn from top to bottom.
The chart orientation, which can be head up, course
up or north up.
Moving the "window" on the displayed chart to bring
a new area into view.
The mode in which, when no cartographic
information is available at the current range, only a
lat/long grid is displayed. If it is switched off in setup
(the default setting), only ranges for which
cartographic information is available can be
selected.
A sequence a waypoints.
The Raytheon standard for data communications.
99