AUXCOM Chapter Four

1
(No Transcript)
2
Chapter Four

• Distress, Urgency, and Safety Messages

3
Messages without a specific addressee DISTRESS
-- Message sent when grave and imminent
danger exists URGENCY -- Message to indicate
very urgent concern for ship, aircraft, other
vessel or a person SAFETY -- Message
concerning safety of navigation or important
meteorological warnings
4
Distress Message
For grave and imminent danger Indicated by the
phrase MAYDAY, MAYDAY, MAYDAY Sent by skipper or
other acting in-charge
Has absolute priority over all other
transmissions Stations hearing a Mayday shall
stop transmissions immediately
5
Distress Call Message
Given on 2182 kHz or Channel 16 The CALL
Mayday, Name and call sign given 3
times) MAYDAY, MAYDAY, MAYDAY THIS IS JOHN
SMITH ON THE TITANIC THIS IS JOHN SMITH ON THE
TITANIC THIS IS JOHN SMITH ON THE TITANIC
6
Distress Call Message
Given on 2182 kHz or Channel 16 The MESSAGE
Mayday, Name and call sign given once) Titanic
This is Coast Guard Station X-RAY What is your
exact location MAYDAY THIS IS JOHN SMITH ON THE
TITANIC We are taking on water north of Red Rock
Point. We have 10 on board Send Help!
Give Details Who, What, Where, Why, Number on
board, and anything else that may help in
locating you and aid in sending the needed
equipment. This will save time and lives.
7
False MAYDAYs are illegal They cost
taxpayers millions of dollars each year and
endanger lives. You can go to jail for 6 months
and pay 250,000 in fines Report a hoax (800)
2NO-HOAX
Real Hoax
266 4629
8
RECEIVING A DISTRESS CALL MAYDAY (Name call
sign from distress vessel repeated 3 times) THIS
IS (Name call sign of acknowledging vessel
repeated 3 times) RECEIVED MAYDAY AFTER A
MOMENTARY DELAY TRANSMIT MAYDAY (Name call sign
of distressed vessel) THIS IS (Name call sign
of acknowledging vessel, give location
and action planned as well as ETA to their
location etc.)
9
TO IMPOSE SILENCE ON THE FREQUENCY By distress
unit or station in control SEELONCE MAYDAY By
another unit SEELONCE DISTRESS
TO TERMINATE THE DISTRESS By station
terminating the distress SEELONCE FEENEE
10
URGENCY MESSAGE A very urgent message concerning
safety of vessel or a person Indicated by the
phrase PAN PAN .. PAN PAN .. PAN PAN (Pronounced
as PAWN PAWN) Sent by the skipper or other person
temporarily in-charge Has priority over all but
distress
11
URGENCY MESSAGE Given in 2182 kHz or Channel
16 PAN PAN .. PAN PAN .. PAN PAN This is (Name
call sign given only once) (Give details Who,
What, where, Why, etc.) This is (Name call
sign given once) OVER
12

• SAFETY MESSAGE
• Indicated by the phrase
• SECURITY .. SECURITY .. SECURITY
• Sent by the skipper or other person temporarily
  in-charge
• Has priority over all but distress and urgency
  messages
• Where there is no Coast Guard Auxiliary sends
  message
• Where there is a Coast Guard - Auxiliary send
  info to Coast Guard for decision on making
  broadcast

13

• SAFETY MESSAGE
• Indicated by the phrase
• SECURITY .. SECURITY .. SECURITY
• Sent by the skipper or other person temporarily
  in-charge
• Has priority over all but distress and urgency
  messages
• Where there is no Coast Guard Auxiliary sends
  message
• Where there is a Coast Guard - Auxiliary send
  info to Coast Guard for decision on making
  broadcast

14
SAFETY CALL Given on 2182 kHz or Channel
16 SECURITY, SECURITY, SECURITY This is (Name
Call Sign Given Once) Shift to (a working
channel) for a safety message This is (Name
Call Sign Given Once) Out SAFETY MESSAGE Given on
a working channel SECURITY, SECURITY,
SECURITY This is (Name Call Sign Given
Once) (Give Details) This is (Name Call Sign
Given Once) Out
15

• EPIRBs
• Emergency Position Indicating
• Radio Beacon
• Operates on 121.5 243 MHz
• Class A (Automatic)
• Class B (Manual)
• Class S Used in survival craft
• Operates on 406 MHz Transmit ID INFO
• Class I (Automatic)
• Class II (Manual)
• Has been phased out (2/1/1999)
• Class C Operate on VHF-FM