Appendix B Menu List and Materials B-138
Category name Object name
Icon button display
example
Alert generated when
the own ship approaches
the object
(Local Magnetic
anomaly)
Magnetic anomaly at a point
No alert
Magnetic anomaly along a
line or over an area
No alert
Magnetic variation at a point
No alert
Magnetic variation along a
line or over an area
No alert
(Natural
Feature/Seabed)
Hill or mountain top
No alert
Conspicuous hill or mountain
top
No alert
Cable area
No alert
Foul area of seabed safe for
navigation but not for
anchoring
No alert
Sand waves
No alert
Spring
No alert
Weed, kelp
No alert
(Unknown) ? Mark
No alert
Generic Object
No alert
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