DIVING AND SNORKELING IN UTAH
Particular care must be taken when boating in waters where there are divers. A vessel engaged in diving must display the following:
A square, red flag with a white diagonal stripe from one top corner to the opposite bottom corner should be used to indicate the presence of a diver below.
A rigid replica of the International Code "A" (Alpha) flag not less than one meter in height may also be used.
THE DIVERS FLAG
The operator of any vessel shall not approach within 150 feet of a posted diver's flag, unless the vessel is part of the equipment in use by the divers.
A scuba diver shall display a diver's flag prior to diving activity and shall dive and surface in close proximity to the flag.
No person shall place a diver's flag on the waters of this state unless diving activity is in progress in that area.