It depends on how many clams are in the water! Yes, I know that was a typo. You meant "calm" not "clam" but it was a funny typo anyway! Seriously though, you did not state the rate of the current of the water. Wasn't that given? If a boat travels 8mph then it can go 8 miles in one hour. I don't think that's what you meant. Read the problem again and copy it exactly. Edwin