Circular Letter MSC/Circ.1122
Adoption of the Revised NAVTEX Manual

ANNEX. NAVTEX Manual

Foreword

NAVTEX Manual

1. - Introduction

2. - Definitions

3. - Planning a NAVTEX service

4. - Principal features of NAVTEX services

5. - The transmitter identification character (B₁)

6. - Allocation of transmission times

7. - Subject indicator characters (B₂)

8. - Message format

9. - Message numbering

10. - Information control

11. Message content

12. - Message Priorities and Broadcast Procedures

12.1 Message priorities

12.2 Broadcast procedures

13. - Best practice for those using the service

13.1 Setting watch

13.2 Logging

14. - Management of the service

14.1 Data priority and formatting

14.2 Mutual interference between NAVTEX stations

14.3 Balancing the volume of data to be broadcast throughout the daily transmission cycle

15. - Information for mariners and publicity

ANNEX 1. IMO SUB-COMMITTEE ON RADIOCOMMUNICATIONS AND SEARCH AND RESCUE (COMSAR) Co-ordinating Panel on NAVTEX services

1. Terms of reference

2. Contact addresses

3. Panel membership and participation

ANNEX 2. RECOMMENDATION ITU-R M.540-2 - Operational and Technical Characteristics for an Automated Direct-Printing Telegraph System for Promulgation of Navigational and Meteorological Warnings and Urgent Information to Ships

UNANIMOUSLY RECOMMENDS

ANNEX I. OPERATIONAL CHARACTERISTICS

ANNEX II. TECHNICAL CHARACTERISTICS

ANNEX 3. Resolution MSC.148(77) ADOPTION OF THE REVISED PERFORMANCE STANDARDS FOR NARROW-BAND DIRECT-PRINTING TELEGRAPH EQUIPMENT FOR THE RECEPTION OF NAVIGATIONAL AND METEOROLOGICAL WARNINGS AND URGENT INFORMATION TO SHIPS (NAVTEX)

Annex.
REVISED RECOMMENDATION ON PERFORMANCE STANDARDS FOR NARROW-BAND DIRECT-PRINTING TELEGRAPH EQUIPMENT FOR THE RECEPTION OF NAVIGATIONAL AND METEOROLOGICAL WARNINGS AND URGENT INFORMATION TO SHIPS (NAVTEX)

1. INTRODUCTION

2. GENERAL

3. CONTROLS AND INDICATORS

4. RECEIVERS

5. DISPLAY DEVICE AND PRINTER

6. STORAGE

6.1 Non-volatile message memory

6.2 Message identifications

6.3 Programmable control memories

7. ALARMS

8. TEST FACILITIES

9. INTERFACES

ANNEX 4. IMO RESOLUTION A.706(17), as amended WORLD-WIDE NAVIGATIONAL WARNING SERVICE

ANNEX 1.
IMO/IHO World-Wide Navigational Warning Service Guidance Document

1. INTRODUCTION

World-Wide Navigational Warning Service (WWNWS)

1. INTRODUCTION

2. DEFINITIONS

3. BROADCAST SYSTEMS

3.1 Broadcast systems

3.2 Broadcast scheduling

3.2.1 Automated systems (SafetyNET/NAVTEX)

3.2.2 Schedule changes

4. NAVIGATIONAL WARNINGS

4.1 General

4.2 The three types of navigational warnings are:

4.2.1 NAVAREA warnings

4.2.2 Coastal warnings

4.2.3 Local warnings

5. INFORMATION CONTROL

5.1 Message numbering

5.2 Priority message handling

5.3 Language

6. CO-ORDINATOR RESOURCES AND RESPONSIBILITIES

6.1 NAVAREA Co-ordinator resources

6.2 NAVAREA Co-ordinator responsibilities

6.3 Sub-area Co-ordinator resources

6.4 Sub-area Co-ordinator responsibilities

6.5 National Co-ordinator resources

6.6 National Co-ordinator responsibilities

ANNEX 2.
IMO PROCEDURE FOR AMENDING THE WORLD-WIDE NAVIGATIONAL WARNING SERVICE

Appendix.
GEOGRAPHICAL AREAS FOR CO-ORDINATING AND PROMULGATING RADIO-NAVIGATIONAL WARNINGS

ANNEX 5. IMO RESOLUTION A.801(19), annex 4 Criteria for use when providing a NAVTEX service

ANNEX 6. PROCEDURE FOR AMENDING THE NAVTEX MANUAL

ANNEX 7. COMSAR/Circ.28 INTERNATIONAL NAVTEX SERVICE

ANNEX. Interference between stations and the use of 490 kHz