Define Surface Communication - Underwater Inspection of Bridge?

It is not necessary to have voice communication in all situations, particularly for shallow dives where the diver can readily return to report any findings. However, on deep dives, there are several advantages provided to the underwater inspection by the use of direct two-way communication.

i) It allows the diver to immediately describe observations and location for simultaneous recording by a note taker on the surface.

ii) The diver can take guidance from the engineer on the surface for further investigation.

iii) Areas of concern can be more clearly and efficiently defined.

 iv) The surface communication allows an engineer at the surface to discuss observations with a non-engineer diver, to direct attention to specific zones, and to have follow-up inspection with specific measurements according to the type of damage found.

v) As the diver proceeds with inspection, a note taker can follow drawings, verify their validity, note damages on the drawings at the proper location and track the progress of the diver.

vi) Diver can inform the surface personnel about any impending danger or problem.