'Float' in the Bible

My servants will bring [them] down from Lebanon to the sea, and I will make them [into] rafts in the sea [to float to] the place which you indicated to me. Then I shall break them up there, and you may carry [them further], and {you shall meet my needs} by giving food for my house."

Then the man of God said, "Where did it fall?" So he showed him the place, and then he cut off a stick and threw [it] there and made the iron ax float.