Specifications
case between dives and take special care to avoid damaging the transducer.
3.10 EXAMPLES OF UNDERWATER COMMUNICATION
3.10.1 CALLS BETWEEN SURFACE, SUBS, OR DIVERS: Listen for a
break in conversation if others are communicating in the area. Identify whom
you are calling and then identify yourself. Continue speaking until the message is
complete. At the end of each message, say “OVER” if a response is required and
“OUT” if no response is required.
Note: If using the LAR V Adapter, a limited lexicon should be used and practiced
among all team members. Speech intelligibility among trained talkers averages
around 40%, as veried through word list tests.
EXAMPLE (not using limited lexicon):
DIVER A: Red Diver this is Blue Diver, do you see the wreck yet?....
OVER.
DIVER B: Blue Diver this is Red Diver, yes I see the wreck, it’s ten yards
to your right....OUT.
3.10.2 CALLS BETWEEN DIVERS AND SURFACE, SUBS, OR BELLS:
EXAMPLES:
DIVER A: Topside this is Blue Diver, how far am I from the dive boat?....
OVER.
SURFACE: Blue Diver this is Topside, I see your bubbles 50 feet off my port
bow....OUT.
DIVER A: Sub, this is Blue Diver, How long before I must lock in?....
OVER.
SUB B: Blue Diver, this is Sub, we expect you in seven minutes....
OUT.
3.10.3 CALLS BETWEEN SURFACE UNITS, SUBS, AND BELLS:
Surface units within range can communicate in open water or harbors, thereby
avoiding the sometimes crowded and less private channels. Crews of submarines
or bells can communicate with one another or with surface units in much the
same way. We recommend that standard radio/telephone procedures be used in all
communications.
- IMPORTANT SAFETY NOTES -
It is absolutely essential for all divers to be properly trained and equipped before
responding to distress, emergency, and safety calls.
WARNING: Under no circumstances should a diver begin an ascent while holding
his breath (air embolism may occur).
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