JRC JMR-7210-6X, Instruction Manual

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D-139
Appendix D Menu List and Materials
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APP D
Category name Object name
Icon button display
example
Alert generated when
the own ship approaches
the object
(Obstructions) Isolated danger of depth less
than the safety contour Crossing a danger
(dangerous symbol)
Obstruction, depth not stated Crossing a danger
(dangerous symbol)
Obstruction in the intertidal
area No alert
Because the object
included in ENC does
not change to "Isolated
danger" depending on
the safety contour.
This is defined in S-52.
Obstruction Crossing a danger
(dangerous symbol)
Obstruction in the water
which is always above water
level Crossing a danger
(dangerous symbol)
Dangerous underwater rock
of uncertain depth Crossing a danger
(dangerous symbol)
Rock which covers and
uncovers or is awash at low
water Crossing a danger
(dangerous symbol)
Wreck showing any portion of
hull or superstructure at level
of chart datum Crossing a danger
(dangerous symbol)
Non-dangerous wreck, depth
unknown Crossing a danger
(dangerous symbol)
Dangerous wreck, depth
unknown Crossing a danger
(dangerous symbol)
Direction of buoyage No alert
Direction and color of
buoyage for approaching
harbor in IALA region A (red
to port) No alert