AVOIDING CAPSIZES TO WINDWARD A windward capsize occurs when sailing on a run, usually in moderate to heavy wind. Typically, a windward capsize is caused by the boat becoming unstable and rolling back and forth. If the boat heels to windward too much and the sailors do not respond quickly enough or overreact, the boat can capsize to windward with significantly more force than a capsize to leeward.
To avoid a capsize to windward, keep your boom vang tight enough to reduce twist at the top of the mainsail (which will help depower the sail) and keep your centerboard lower than you would in lighter air. If the boat begins to roll, head up slightly until the sails start to luff or slightly trim your mainsheet. Any of these techniques will help keep your boat more stable, but combining them is the best solution.