لياقة بدنية
Complete competence with sailing and seamanship are required for single-handing, as is a high degree of self-sufficiency. Physical fitness is of particular importance for single-handing, as all of the tasks which would ordinarily be handled by two or more persons must be accomplished by the single sailor. This includes often arduous sail adjustments and sail changes in all weathers, including heavy weather (very windy or stormy weather).