Following are a number of back-translations of Acts 27:28:

• Uma: «That is why they lowered the sounding stone so that they would know the depth of the sea. Upon sounding, it was still about 20 arm-spans. After that they sounded again, the depth was only about 15 arm-spans.» (Source: Uma Back Translation)
• Yakan: «Therefore they let down a rope with a heavy (thing) tied at the end so that they would know how deep the sea was. Then the depth was twenty fathoms (deppe). After a while they let down the rope again. The depth was sa’ fifteen fathoms (deppe).» (Source: Yakan Back Translation)
• Western Bukidnon Manobo: «That’s why they dropped down one of the weights, and they learned that the depth of the water was only twenty fathoms. And in a little while again after that, they did it again, and the depth was only fifteen fathoms.» (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: «When they measured the depth of the water, it was still twenty fathoms (fathom = distance between outstretched arms). When we had moved-on a little, they measured again, and it was fifteen fathoms.» (Source: Kankanaey Back Translation)
• Tagbanwa: «They sounded the depth, twenty depa (distance from finger-tip to finger-tip with arms outstretched sideways) still. After going a little further, they sounded again. They found it was only fifteen depa.» (Source: Tagbanwa Back Translation)