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Jib

Triangular sail set in front of the mast.

Jib topsail

Sometimes jib top. Large headsail used with the boat not sailing close hauled, but is not sailing far enough downwind to set a spinnaker. Usually cut with a high clew and the foot angled upwards so as not to catch the bow wave of the boat at speed.

Jockey Pole

A small carbon pole about 1.5 m long used to keep the guy away from the boat