distress signal and distress traffic/urgency transmission

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Distress Signal and Distress Traffic/Urgency Transmission. Introduction. Distress alerting – Ship to shore The Global Maritime Distress and Safety System (GMDSS) as described in SOLAS Chapter IV defines the first functional requirement as: "Every ship, while at sea, shall be capable - PowerPoint PPT Presentation

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Page 1: Distress Signal and Distress Traffic/Urgency Transmission
Page 2: Distress Signal and Distress Traffic/Urgency Transmission

IntroductionDistress alerting – Ship to shoreThe Global Maritime Distress and Safety System (GMDSS)

as described in SOLAS Chapter IV defines the first functional requirement as:

"Every ship, while at sea, shall be capable of transmitting ship-to-shore distress alerts by at least two independent means, each using a different radiocommunication service". three methods of transmitting a distress alert:EPIRBDigital Selective Calling (DSC) INMARSAT

Page 3: Distress Signal and Distress Traffic/Urgency Transmission

General Regulations Distress calling procedures are

compulsory for the maritime mobile service and for correspondence between ships, aircraft and survival crafts.

No regulations shall prevent a coast station from using any available means to give assistance to a distress station.

Distress signals/messages must only be transmitted on the direct orders of the master or the officer-in-charge.

Page 4: Distress Signal and Distress Traffic/Urgency Transmission

Distress, Urgency and Safety frequenciesVHF: 156.8 Mhz (Channel

16)MF: 2182 KhzHF: 4125 Khz 6215 Khz 8291 Khz 12290 Khz 16420 Khz

Two most commonly used:

VHF Ch. 16 and MF 2182 Khz

Page 5: Distress Signal and Distress Traffic/Urgency Transmission

In distress situation, speech and radiotelephony must be as SLOW and CLEAR as possible.

Click to play video

Page 6: Distress Signal and Distress Traffic/Urgency Transmission

The international distress and calling frequency 2182 Khz used by ship stations,

aeromobile stations, and survival craft stations.

Coast stations open for public correspondence on MF telephony, shall keep listening watch on 2182 Khz.

Ship stations when not engaged in traffic, maintain listening watch on 2182 Khz.

Page 7: Distress Signal and Distress Traffic/Urgency Transmission

Silence Periods It is of vital importance that all ships

make every attempts to listen to the international frequency during the silence periods.

The first 3 minutes of every hour and half hour. (eg. 1300H to 1303H; 2230H to 2233H)

All transmissions on 2182 Khz must cease.

Page 8: Distress Signal and Distress Traffic/Urgency Transmission

The Radiotelephony alarm signal Two substantially sinusoidal audio frequency tones transmitted alternately.

One tone at 2200Hz and the other at 1300Hz with a duration of 250 milliseconds each.

Shall be transmitted as continuously as possible of at least 30 seconds, but not exceeding 1 min.

Page 9: Distress Signal and Distress Traffic/Urgency Transmission

A Distress situation is one in which a vessel, aircraft, vehicle, or person is…

threatened by grave and imminent danger

and requires immediate assistance. Examples of "grave and imminent

danger“ fire, explosion, sinking or abandonship, piracy, collision, listing, taking in water.

Distress

Page 10: Distress Signal and Distress Traffic/Urgency Transmission

Distress signal Mayday voice procedure radio

communication derived from the Fren

ch venez m'aider

Come help me

Page 11: Distress Signal and Distress Traffic/Urgency Transmission

Distress Call

MAYDAY, MAYDAY, MAYDAY, This is STOLT EGRET, STOLT EGRET, STOLT EGRET, CALLSIGN LAPO4MMSI 25701000

Page 12: Distress Signal and Distress Traffic/Urgency Transmission

Distress MessageMAYDAYSTOLT EGRET CALLSIGN LAPO4 MMSI 25701000IN POSITION 09.15 SOUTH 102.10 WEST20 degrees listing to port sideDanger of capsizingNeed immediate assistance15 crewmembersThe weather is Northwesterly winds,

Gale 8 with rainshowers and visibility about 5 nm.

Page 13: Distress Signal and Distress Traffic/Urgency Transmission

Distress Message

MAYDAY, MAYDAY, MAYDAY, This is STOLT EGRET, STOLT EGRET, STOLT EGRET, CALLSIGN LAPO4, MMSI 25701000.

(brief pause)

MAYDAYSTOLT EGRET CALLSIGN LAPO4 MMSI 25701000IN POSITION 09.15 SOUTH 102.10 WEST20 degrees listing to port sideDanger of capsizingNeed immediate assistance15 crewmembersThe weather is Northwesterly winds, Gale 8 with rainshowers and visibility about 5 nm.Over

Page 14: Distress Signal and Distress Traffic/Urgency Transmission

Distress Message Acknowledgement

MAYDAY STOLT EGRET, STOLT EGRET, STOLT EGRET, CALLSIGN LAPO4, MMSI 25701000This isBERGE MASTER, BERGE MASTER, BERGE MASTER, CALLSIGN LANO2 RECEIVED MAYDAY

Page 15: Distress Signal and Distress Traffic/Urgency Transmission

Any mobile station acknowledging receipt of a distress message shall, on the order of the MASTER or PERSON Responsible for the ship, aircraft, or other vehicle, transmit the following information as soon as possible:

Its name Its position The ETA and Speed towards the station

in distress

Page 16: Distress Signal and Distress Traffic/Urgency Transmission

Distress Communication between Stolt Egret and Berge Master

Click video to play

Page 17: Distress Signal and Distress Traffic/Urgency Transmission

Seelonce Mayday or Seelonce Distress

means that the channel may only be used by the vessel in distress and the coastguard (and any other vessels they ask for assistance in handling the emergency). The channel may not be used for normal working traffic until 'seelonce feenee' is broadcasted.

Page 18: Distress Signal and Distress Traffic/Urgency Transmission

Eg.

MAYDAYALL STATIONS, ALL STATIONS, ALL STATIONSThis is BERGE MASTER, BERGE MASTER, BERGE MASTER, CALLSIGN LANO2SEELONCE MAYDAY

Page 19: Distress Signal and Distress Traffic/Urgency Transmission

Seelonce Feenee

means that the emergency situation has been concluded and the channel may now be used normally. The word prudonce (prudence caution) can also be used to allow restricted working to resume on that channel.

Page 20: Distress Signal and Distress Traffic/Urgency Transmission

Eg.

MAYDAYALL STATIONS, ALL STATIONS, ALL STATIONSThis is BERGE MASTER, BERGE MASTER, BERGE MASTER, CALLSIGN LANO2VESSEL IN DISTRESS “MV BRUNITA” at 2100H UTCSEELONCE FEENEE

Page 21: Distress Signal and Distress Traffic/Urgency Transmission

Mayday Relay When the station in distress is not itself in

a position to transmit the distress message When the Master or the person responsible

for the craft considers that further help is necessary

When an unacknowledged distress message is heard and one is not in a position to render assistance.

Page 22: Distress Signal and Distress Traffic/Urgency Transmission

Distress Relay MessageMAYDAY RELAY, MAYDAY RELAY, MAYDAY RELAYALL STATIONS, ALL STATIONS, ALL STATIONSThis isBERGE MASTER, BERGE MASTER, BERGE MASTER, CALLSIGN LANO2 MMSI 257555000FOLLOWING RECEIVED FROM STOLT EGRET CALLSIGN LAPO2 MMSI 257333000, ON VHF CH. 16, TIME 1615 UTC:

MAYDAYSTOLT EGRET CALLSIGN LAPO4 MMSI 25701000IN POSITION 09.15 SOUTH 102.10 WEST20 degrees listing to port side. Danger of capsizingNeed immediate assistance15 crewmembersThe weather is Northwesterly winds, Gale 8 with rainshowers and visibility about 5 nm.

Page 23: Distress Signal and Distress Traffic/Urgency Transmission

USCG Rescues Northern Belle

Page 24: Distress Signal and Distress Traffic/Urgency Transmission

Exercise Create a distress message Vessel Name MV Cap/Callsign

DUX2 You are sinking and abandoning

ship Your position 8 ° 44’ N 124 ° 55’ E 12 Persons on board Lt 0500H

Page 25: Distress Signal and Distress Traffic/Urgency Transmission

Assignment Create a safety Message Your Vessel’s Name is MV

Cap/Callsign DUX2 You encountered 10 floating

containers in position 8 ° 45’ N 124 ° 34’ E Lt 0500H

Tell all stations to keep a sharp look out