JRC JAN-9201 - Page 315

B-135 Appendix B Menu List and Materials
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APP B
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APP C
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