Radar

A microwave ranging system that bounces a rotating pulse off targets and displays their bearing and range; modern broadband/pulse-compression radars resolve close targets at very low power, often with MARPA/ARPA target tracking.

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Related R-terms

Rail

The outer edge of the deck, where the deck meets the topsides.

Reach

A point of sail with the wind forward of, abeam, or aft of the beam but not dead astern — …

Ready to jibe

Skipper's command warning the crew to prepare for a gybe.

Rudder

The underwater steering foil hinged at the stern (or on a skeg) that, swung to port or sta…

Ready about

Skipper's command warning the crew to prepare for a tack.

Run

A point of sail with the wind coming from dead astern.

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