The employer must meet the following additional requirements when working with a diver in the water:
If a crane/derrick is used to get a diver into and out of the water, it must not be used for any other purpose until the diver is back on board. When used for more than one diver, it must not be used for any other purpose until all divers are back on board.
The operator must remain at the controls of the crane/derrick at all times.
A clear line of sight must be maintained between the operator and tender; or
The signals between the operator and tender must be transmitted electronically.
The means used to secure the crane/derrick to the vessel/flotation device (see paragraph (n)(5) of this section) must not allow any amount of shifting in any direction.