We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
An abbreviation marking coral on the seabed.
Also known as: Coral seabed abbreviation, Reef bottom notation
On a nautical chart coral is recorded by its own abbreviation, describing a seabed of living or dead reef that is hard, irregular and may be growing.
Records that the seabed at that point is coral.
Contexts: Navigation
Marks the one seabed type that can change depth over a chart's life, since living reef grows and a survey ages.
Contexts: Navigation
A short lower-case abbreviation in letters printed beside a sounding.