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They are known for distinctive rhumb lines that radiate out from various points in the ocean in the direction of wind or compass points to help navigators plot their course.

The wind held long enough for the boats to slip through, and a half-hour later we were sailing a rhumb line for the beach.

To ensure that every cartouche, sea monster and rhumb line remains vibrant, the men keep the Venetian blinds in their south-facing apartment drawn, as if for a permanent siesta.

A term when a look-out man announces a rhumb or bearing of any object in this quarter.

On looking at our binnacle, they pointed to the north-west rhumb, and made us easily understand that it was the course they always steered on their return to Macassar.