JP 3-50 National Search and Rescue Manual Vol I - US Navy

3. 2638 kHz, all areas.
4. 2738 kHz, all areas except Great Lakes and Gulf of Mexico.
5. 2830 kHz, Gulf of Mexico.
6. 156.3 MHz (channel 6), all areas.
340 SAR MISSION MESSAGES
SAR mission messages include SITREPs, search action plans, rescue
action plans, all ships broadcasts, aircraft alerting messages, and
miscellaneous SAR messages. These messages are normally unclassified
and, in plain language, use no tactical call signs, and preferably
require no key to interpret. RCCs should establish a "canned" message
file to aid in quickly drafting and releasing often-used messages.
341 Situation Reports (SITREPs)
A. The OSC uses SITREPs to keep the SMC informed of on scene
mission progress and conditions. The SMC uses SITREPs to keep
interested agencies informed of mission progress. The OSC addresses
SITREPs only to the SMC unless otherwise directed. The SMC may address
SITREPs to as many agencies as necessary, including other RCCs and RSCs,
to keep them informed. SITREPs prepared by an SMC usually include a
summary of information received from OSCs. Often a short SITREP is used
to provide the earliest notice of a casualty or to pass urgent details
when requesting assistance. A more complete SITREP is used to pass
amplifying information during SAR operations, or to pass information to
the agency SAR authorities of the craft in distress. Initial SITREPs
should be transmitted as soon as details of an incident become clear
enough to indicate SAR system involvement, and should not be delayed
unnecessarily for confirmation of all details.
B. While SITREP format is usually established by agency
directives, a standard format that has been adopted internationally is
shown in Vol. II, Chapter 5. It should be used, along with the standard
codes, for international communications between RCCs. It may be used
nationally at the discretion of the SAR coordinators. Whatever the
format, SITREPs should normally provide the following information:
1. Identification - Usually, in the subject line, the SITREP
number, identification of the distressed unit, and a one- or
two-word description of the emergency. The perceived phase of
the emergency should be indicated. SITREPs should be numbered
sequentially throughout the entire case. When an OSC is
relieved on scene, the new OSC continues the SITREP numbering
sequence.
2. Situation - A description of the case, the conditions that
affect the case including on scene weather, and any amplifying
information that will clarify the problem. After the first
SITREP, only changes to the original reported situation need