■Ascent

If the team leader is using a water surface float, ascend along the rope.

The team leader ascend at the end while winding up the rope.

If you touch the rope, the rope of the team leader will be pulled strongly, and the team leader can not wind the rope.
Use the rope as a mark without touching it.

Once on the surface, wait for the entire group to reach the surface without leaving from the group members and the surface float.

If the tide is too fast to stop safely, make sure that the boat is not approaching overhead and ascend.