Question 9

The Correct Answer is C ### Why option C ("Jibe") is correct: A jibe is the maneuver in which the stern of the boat passes through the wind, causing the sails to switch quickly from one side of the boat to the other. When running (sailing downwind) before a **strong wind**, this maneuver is dangerous because: 1. **High Force and Speed:** The wind is pushing the sails with maximum force. When the sail crosses the centerline, it does so rapidly and violently, generating enormous power. 2. **Potential for Damage/Injury:** The sudden and powerful swing of the boom can cause a "Chinese jibe" (uncontrolled jibe) if not executed perfectly. This can lead to: * **Injury:** Hitting crew members with the boom (a common cause of severe head injuries). * **Damage:** Snapping the boom, breaking the mast, or damaging the standing rigging due to the immense shock load. 3. **Vulnerability:** When running before a strong wind, the boat is most prone to accidental or uncontrolled jibes if the course deviates even slightly. Attempting a controlled jibe under these conditions requires precision and significant effort from the crew to control the mainsheet and slow the boom's travel. Therefore, it requires extreme caution. ### Why the other options are incorrect: **A) Reef the mainsail:** Reefing (reducing the sail area) when the wind is strong is a standard procedure for maintaining control, reducing heeling, and easing the load on the boat and crew. While it involves some risk as you expose the crew to wind forces briefly, it is a safety measure, not a maneuver requiring extreme caution due to inherent violence like a jibe. **B) Tack about:** To tack, a boat must turn its bow through the wind. When running downwind, a boat must first turn upwind (a difficult maneuver in strong winds) or execute a full 270-degree turn (a combination of a jibe and a tack). However, tackling the strong wind by turning the bow into it (the core action of a tack) is safer than jibing because the sails are depowered (luffing) as the bow approaches the wind line, reducing violent loads. **D) Strike the jib:** Striking (lowering) the jib when running before a strong wind is a reasonable safety measure, similar to reefing the main. By lowering the headsail, you reduce the total sail area, decreasing the boat's speed and making steering and overall control easier. This action is performed while sailing on a steady course and does not involve the violent, potentially destructive forces associated with an uncontrolled change of tack or jibe.