Was it ever difficult to coordinate Crabster's work along with all the other ships, robots and human divers operating at the ferry site?

Hundreds of ships were float around the ferry site and dozens of boats were float around the barge on the ferry site. It was not easy to work along with other ships because the velocity and direction of current were changed continuously. During the Sewol survey, our ship drifted to the barge and Crabster’s tether cable touched the anchor line of barge. We had to have help from a tug boat to escape the situation.