Navigation General · Chart Symbols
The abbreviation 'Rk' on a nautical chart most commonly represents:
- AA wreck that is an obstruction to navigation
- BA submerged or awash rock✓ Correct
- CA reporting checkpoint for vessel traffic service
- DA range marker (rear)
Explanation
'Rk' is the Chart No. 1 abbreviation for rock (submerged or awash). A wreck is shown with the abbreviation 'Wk' or a wreck symbol. Reporting checkpoints and range markers use completely different designations.
Authority: Chart No. 1, Section K
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