■Entry

First, check with the boat staff to make sure the boat's engine is stopped and that the screws are stopped.
Never enter if the boat's screw is moving. If you get caught in a screw, it will be a big accident.

The direction and speed of the boat are determined by the direction and strength of the wind and current.
Divers have low wind resistance at water surface, so the direction and speed of water surface divers are determined by the direction and strength of the tide rather than the direction and strength of the wind.
Therefore, if the diver's admission time is slightly off, the members of the group will be separated on the water surface.
All members of the group will enter at the same time so that members are not separated.