| Mob-87 |
ARTICLE N 40
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| Mob-87 |
Operational Procedures for Urgency and Safety Communications in the Global Maritime Distress and Safety System (GMDSS)
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| Mob-87 |
Section I. General
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| N 3196 Mob-87 |
� 1. Urgency and safety communications include |
| N 3197 Mob-87 |
a) navigational and meteorological warnings and urgent information ; |
| N 3198 Mob-87 |
b) ship-to-ship safety of navigation communications; |
| N 3199 Mob-87 |
c) ship reporting communications; |
| N 3200 Mob-87 |
d) support communications for search and rescue operations; |
| N 3201 Mob-87 |
e) other urgency and safety messages; and |
| N 3202 Mob-87 |
f) communications relating to the navigation, movements and needs of ships and weather observation messages destined for an official meteorological service. |
| Mob-87 |
Section II. Urgency communications
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| N 3203 Mob-87 |
� 2. In a terrestrial system the announcement of the urgency message shall be made on one or more of the distress and safety calling frequencies specified in Section I of Article N 38 using digital selective calling and the urgency call format. A separate announcement need not be made if the urgency message is to be transmitted through the maritime mobile-satellite service. |
| N 3204 Mob-87 |
� 3. The urgency signal and message shall be transmitted on one or more of the distress and safety traffic frequencies specified in Section I of Article N 38, or via the maritime mobile-satellite service or on other frequencies used for this purpose. |
| N 3205 Mob-87 |
� 4. The urgency signal consists of the words PAN PAN. In radiotelephony each word of the group shall be pronounced as the French word "panne". |
| N 3206 Mob-87 |
� 5. The urgency call format and the urgency signal indicate that the calling station has a very urgent message to transmit concerning the safety of a mobile unit or a person. |
| N 3207 Mob-87 |
� 6. (1) In radiotelephony, the urgency message shall be preceded by the urgency signal (see No. N 3205), repeated three times, and the identification of the transmitting station. |
| N 3208 Mob-87 |
(2) In narrow-band direct-printing, the urgency message shall be preceded by the urgency signal (see No. N 3205) and the identification of the transmitting station. |
| N 3209 Mob-87 |
� 7. (1) The urgency call format or urgency signal shall be sent only on the authority of the master or the person responsible for the mobile unit carrying the mobile station or mobile earth station. |
| N 3210 Mob-87 |
(2) The urgency call format or the urgency signal may be transmitted by a land station or a coast earth station with the approval of the responsible authority. |
| N 3211 Mob-87 |
� 8. When an urgency message which calls for action by the stations receiving the message has been transmitted, the station responsible for its transmission shall cancel it as soon as it knows that action is no longer necessary. |
| N 3212 Mob-87 |
� 9. (1) Error correction techniques in accordance with relevant CCIR Recommendations shall be used for urgency messages by direct-printing telegraphy. All messages shall be preceded by at least one carriage return, a line feed signal, a letter shift signal and the urgency signal PAN PAN . |
| N 3213 Mob-87 |
(2) Urgency communications by direct-printing telegraphy should normally be established in the broadcast (forward error correction) mode. The ARQ mode may subsequently be used when it is advantageous to do so. |
| Mob-87 |
Section III. Medical Transports
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| N 3214 Mob-87 |
� 10 The term "medical transports" as defined in the 1949 Geneva Conventions and Additional Protocols. refers to any means of transportation by land. water or air. whether military or civilian, permanent or temporary. assigned exclusively to medical transportation and under the control of a competent authority of a party to a conflict or of neutral States and of other States not parties to an armed conflict, when these ships, craft and aircraft assist the wounded, the sick and the shipwrecked |
| N 3215 Mob-87 |
� 11. For the purpose of announcing and identifying medical transports which are protected under the above-mentioned Conventions, the procedure of Section II of this Article is used. The urgency signal shall be followed by the addition of the single word MEDICAL in narrow-band direct-printing and by the addition of the single word MAY-DEE-CAL pronounced as in French "medical", in radiotelephony. |
| N 3216 Mob-87 |
� 12. The use of the signals described in No. N 3215 indicates that the message which follows concerns a protected medical transport. The message shall convey the following data: |
| N 3217 Mob-87 |
a) call sign or other recognised means of identification of the medical transport; |
| N 3218 Mob-87 |
b) position of the medical transport; |
| N 3219 Mob-87 |
c) number and type of vehicles in the medical transport; |
| N 3220 Mob-87 |
d) intended route: |
| N 3221 Mob-87 |
e) estimated time en route and of departure and arrival, as appropriate; |
| N 3222 Mob-87 |
f) any other information, such as flight altitude, radio frequencies guarded, languages used and secondary surveillance radar modes and codes. |
| N 3223 Mob-87 |
� 13. (1) The identification and location of medical transports at sea may be conveyed by means of appropriate standard maritime radar transponders (see Recommendation 14 (Mob-87)). |
| N 3224 Mob-87 |
(2) The identification and location of aircraft medical transports may be conveyed by the use of the secondary surveillance radar (SSR) system specified in Annex 10 to the Convention on International Civil Aviation. |
| N 3225 Mob-87 |
� 14. The use of radiocommunications for announcing and identifying medical transports is optional; however, if they are used, the provisions of these Regulations and particularly of this Section and of Articles N 37 and N 38 shall apply. |
| Mob-87 |
Section IV. Safety Communications
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| N 3226 Mob-87 |
� 15. In a terrestrial system the announcement of the safety message shall be made on one or more of the distress and safety calling frequencies specified in Section I of Article N 38 using digital selective calling techniques. A separate announcement need not be made if the message is to be transmitted through the maritime mobile-satellite service. |
| N 3227 Mob-87 |
� 16. The safety signal and message shall normally be transmitted on one or more of the distress and safety traffic frequencies specified in Section I of Article N 38, or via the maritime mobile- satellite service or on other frequencies used for this purpose. |
| N 3228 Mob-87 |
� 17. The safety signal consists of the word SECURITE. In radiotelephony, it shall be pronounced as in French. |
| N 3229 Mob-87 |
� 18. The safety call format or the safety signal indicates that the calling station has an important navigational or meteorological warning to transmit. |
| N 3230 Mob-87 |
� 19. (1) In radiotelephony, the safety message shall be preceded by the safety signal (see No. N 3228), repeated three times, and the identification of the transmitting station. |
| N 3231 Mob-87 |
(2) In narrow-band direct-printing, the safety message shall be preceded by the safety signal (see No. N 3228), and the identification of the transmitting station. |
| N 3232 Mob-87 |
� 20. (1) Error correction techniques in accordance with relevant CCIR Recommendations shall be used for safety messages by direct-printing telegraphy. All messages shall be preceded by at least one carriage return, a line feed signal, a letter shift signal and the safety signal SECURITE. |
| N 3233 Mob-87 |
(2) Safety communications by direct-printing telegraphy should normally be established in the broadcast (forward error correction) mode. The ARQ mode may subsequently be used when it is advantageous to do so. |
| Mob-87 |
Section V. Transmission of Maritime Safety Information
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| N 3234 Mob-87 |
A. General |
| N 3235 Mob-87 |
� 21. The operational details of the stations transmitting maritime safety information in accordance with Nos. N 3238, N 3240, N 3241, N 3243 and N 3245 shall be indicated in the List of Radiodetermination and Special Service Stations (see Nos. 3323, 3326 and 3334). |
| N 3236 Mob-87 |
� 22. The mode and format of the transmissions mentioned in Nos. N 3238, N 3240, N 3241 and N 3243 shall be in accordance with the relevant CCIR Recommendations |
| N 3237 Mob-87 |
B. International NAVTEX System |
| N 3238 Mob-87 |
� 23. Maritime safety information shall be transmitted by means of narrow-band direct-printing telegraphy with forward error correction using the frequency 518 kHz in accordance with the international NAVTEX system (see Nos. 1632, N 2969 and N 2970). |
| N 3239 Mob-87 |
C. 490 kHz and 4 209.5 kHz |
| N 3240 Mob-87 |
� 24. (1) The frequency 490 kHz may be used, after full implementation of the GMDSS, for the transmission of maritime safety information by means of narrow-band direct-printing telegraphy with forward error correction (see No. N 2968 and Resolution 210 (Mob-87)). |
| N 3241 Mob-87 |
(2) The frequency 4209.5 kHz is used exclusively for NAVTEX-type transmission by means of narrow-band direct- printing telegraphy with forward error correction (see Resolution 332 (Mob-87)). |
| N 3242 Mob-87 |
D. High Seas Maritime Safety Information |
| N 3243 Mob-87 |
� 25. Maritime safety information is transmitted by means of narrow-band direct-printing telegraphy with forward error correction using the frequencies 4 210 kHz, 6 314 kHz, 8 416.5 kHz, 12579 kHz, 16806.5 kHz, 19680.5 kHz, 22376 kHz and 26 100.5 kHz (see Resolution 333 (Mob-87)). |
| N 3244 Mob-87 |
E. Maritime Safety Information via Satellite |
| N 3245 Mob-87 |
� 26. Maritime safety information may be transmitted via satellite in the maritime mobile-satellite service using the band 1 530- 1 545 MHz (see Nos. 726, N 3049 and N 3050). |
| Mob-87 |
Section VI. Intership Navigation Safety Communications
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| N 3246 Mob-87 |
� 27. (1) Intership navigation safety communications are those VHF radiotelephone communications conducted between ships for the purpose of contributing to the safe movement of ships. |
| N 3247 Mob-87 |
(2) The frequency 156.650 MHz is used for intership navigation safety communications (see also No. N 3039 and note p) in Appendix 18). |
| Mob-87 |
Section VII. Use of Other Frequencies for Distress and Safety
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| N 3248 Mob-87 |
� 28. Radiocommunications for distress and safety purposes may be conducted on any appropriate communications frequency, including those used for public correspondence. In the maritime mobile-satellite service, frequencies in the bands 1 530- 1 544 MHz and 1 626.5 -1 645.5 MHz are used for this function as well as for distress alerting purposes (see No. N 3107). |
| N 3249 to N 3275 |
NOT allocated |
