You did fine grasshopper for getting survey. You do better to ask for advice before taking precious cargo out to sea. Most honorable sailboat owner, you do not specify boating experience or educational achievements. You make answering final question harder then chinease arithmetic. If you or honorable sister have boating experience, and feel comfortable going into environment that will not support life but for very short time if in water, then take ceremonial chill and cast off. If little or no boating experience in family, then seek qualified assistance just as you most wisely did with survey.