■How to get boat support

It is a method to tie the target object to the rope pulled from the boat and pull it up.

If the object is lightweight, you can put the target object in a mesh bag underwater and then pull it up with a hook attached rope from the boat.

If the recovery object are heavy or large, make loops at both ends of the rope, pass one loop through the other loop to make a large loop, wind it around the recovery object, and then wind it up with a winch on the boat.