Found it twenty fathoms: a fathom is the distance betwixt the end of the middle finger on the one hand, from the end of the middle finger on the other hand, when the arms are stretched out; which is ordinarily accounted about six feet in measure. Found it fifteen fathoms; coming into more shallow places they might reasonably conclude that they were near unto the land.
Related Commentaries of Acts 27:28
Acts 27:28
28 And sounded, and found it twenty fathoms: and when they had gone a little further, they sounded again, and found it fifteen fathoms.