Question 18

The Correct Answer is C ### Explanation for Option C (Jibe) The situation described involves a vessel running (sailing away) before a rough sea and a strong wind. When sailing downwind, the sails are eased out. Yawing (swinging side to side around the vertical axis) is common in these conditions. If the vessel yaws excessively, or if the wind shifts slightly, the wind can catch the mainsail on the "reverse" side—meaning the sail shifts suddenly across the centerline from one side of the boat to the other, powered by the wind. This sudden, unintended shift of the mainsail when sailing downwind is defined as an **uncontrolled jibe** (or simply a "jibe," especially in the context of an unintended maneuver). ### Why the Other Options are Incorrect * **A) Broach:** A broach occurs when a vessel, typically sailing downwind in heavy seas, loses control, turns sideways to the waves, and risks capsizing or being flooded. While yawing might precede a broach, the specific event where the wind catches the mainsail on the reverse side describes a jibe, not the resulting sideways turn and loss of control defined by a broach. * **B) Tack:** A tack is a controlled maneuver used when sailing *upwind* where the bow (front) of the boat passes through the eye of the wind, changing the side on which the wind fills the sails. This is the opposite of the situation described (running downwind). * **D) Go in irons:** To "go in irons" describes a situation where a boat, usually during a tack maneuver, stalls directly into the wind and loses all forward momentum, leaving the sails flapping uselessly. This term applies only when attempting to sail upwind or during a botched tack.