Gunter rig

Fore and aft sailing rig with nearly vertical upper spar

Gunter rig is a configuration of sail and spars used in sailing. It is a fore and aft sail set abaft (behind) the mast. The lower half of the luff (front) of the sail is attached to the mast, and the upper half is fastened to a spar which is approximately vertical and reaches above the top of the mast. This spar is called a "yard", but it is common for some to confuse it with a "gaff". The overall shape of a gunter sail is roughly triangular, so having a superficial resemblance to Bermuda rig.

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