Every different type of sailing rig can be dangerous in certain circumstances. Which situation would most likely be dangerous?

Correct Answer: Option D — A gaff rig is dangerous in a calm wind and large swell.

Gaff-rigged vessels feature heavy spars and loose-footed sails that lack stability in rolling swells. In calm winds, large swells cause violent thrashing and uncontrolled jibing of the gaff, endangering the rig and crew.