Selkirk is the only person known to have been on the island at that time who is likely to have had dividers, and was even said by Rogers to have had such instruments in his possession.
سلکرک تنها شخص شناخته شده ایست که که در آن زمان در جزیره بوده و و وسایل دریانوردی داشته و روگرز هم گفته که بعضی وسایل را داشته‌است.