They took soundings and found that the water was twenty fathoms deep. Going a little farther, they took another set of soundings that read fifteen fathoms.
KJV
And sounded, and found [it] twenty fathoms: and when they had gone a little further, they sounded again, and found [it] fifteen fathoms.
ASV
and they sounded, and found twenty fathoms; and after a little space, they sounded again, and found fifteen fathoms.