Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 1: Single talker and multiple listeners (IEC 61162-1:2024)

IEC 61162-1:2024 contains the requirements for data communication between maritime electronic instruments, navigation and radiocommunication equipment when interconnected via an appropriate system. This document is intended to support one-way serial data transmission from a single talker to one or more listeners. These data are in printable ASCII form and can include information such as position, speed, depth, frequency allocation, etc. Typical messages can be from about 11 to a maximum of 79 characters in length and generally require transmission no more rapidly than one message per second. The electrical definitions in this document are not intended to accommodate high-bandwidth applications such as radar or video imagery, or intensive database or file transfer applications. Since there is no provision for guaranteed delivery of messages and only limited error checking capability, it is important this document is used with caution in all safety applications. For applications where a faster transmission rate is necessary, IEC 61162-2 applies. For applications to shore based equipment of the automatic identification system (AIS) the IEC 62320 series applies.

Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt - Digitale Schnittstellen - Teil 1: Ein Datensender und mehrere Datenempfänger (IEC 61162-1:2024)

Matériels et systèmes de navigation et de radiocommunication maritimes - Interfaces numériques - Partie 1: Émetteur unique et récepteurs multiples (IEC 61162-1:2024)

L'IEC 61162-1:2024 contient les exigences pour la communication des données entre les instruments maritimes électroniques, les matériels de navigation et de radiocommunications lorsqu'ils sont interconnectés par l'intermédiaire d'un système approprié. Le présent document est destiné à prendre en charge l'émission unidirectionnelle de données série entre un seul émetteur et un ou plusieurs récepteurs. Ces données sont au format ASCII imprimable et peuvent inclure des informations telles que la position, la vitesse, la profondeur, l'allocation de fréquences, etc. Les messages types peuvent être de longueur comprise entre environ 11 et 79 caractères au maximum et nécessitent généralement une émission pas plus rapide qu'un seul message par seconde. Les définitions électriques du présent document ne sont pas destinées à gérer les applications à large bande passante comme les radars ou l'imagerie vidéo, ou encore les bases de données intensives et les applications de transfert de fichiers. En l'absence de disposition assurant l'émission des messages et compte tenu de la capacité limitée de vérification des erreurs, il est important d'utiliser le présent document avec précaution dans toutes les applications de sécurité. Pour les applications dans lesquelles un débit d'émission plus rapide est nécessaire, l'IEC 61162-2 s'applique.

Pomorska navigacijska in radiokomunikacijska oprema in sistemi - Digitalni vmesniki - 1. del: Enosmerna komunikacija: en govorec - več poslušalcev (IEC 61162-1:2024)

Standard IEC 61162-1:2024 vsebuje zahteve za podatkovno komunikacijo med pomorskimi elektronskimi instrumenti, navigacijsko in radiokomunikacijsko opremo ob povezavi z ustreznim sistemom. Ta dokument je namenjen podpori enosmernega prenosa podatkov od enega govorca do enega ali več poslušalcev. Ti podatki so v natisljivem formatu ASCII in lahko vključujejo informacije, kot so položaj, hitrost, globina, dodelitev frekvenc itd. Tipična sporočila so lahko dolga od 11 do 79 znakov in na splošno ne zahtevajo prenosa, hitrejšega od prenosa enega sporočila na sekundo. Električne definicije v tem dokumentu niso namenjene za aplikacije, ki zahtevajo večjo pasovno širino (npr. radar ali videoposnetki), ali podatkovno intenzivne aplikacije (baze podatkov, prenos datotek). Zajamčena dostava sporočil ni predvidena, zmožnost preverjanja napak pa je omejena, zato je pomembno, da se ta dokument uporablja previdno v vseh varnostnih aplikacijah. Za vrste uporabe, pri katerih je potreben hitrejši prenos, se uporablja standard IEC 61162-2. Za kopensko opremo sistema za avtomatično identifikacijo (AIS) se uporablja standard IEC 62320.

General Information

Status
Published
Public Enquiry End Date
31-May-2023
Publication Date
10-Jun-2024
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
29-May-2024
Due Date
03-Aug-2024
Completion Date
11-Jun-2024

Relations

Overview - EN IEC 61162-1:2024 (Digital interfaces - Single talker / multiple listeners)

EN IEC 61162-1:2024 specifies one‑way serial digital interfaces for maritime navigation and radiocommunication equipment. It defines the electrical and data‑format requirements for a single talker (data source) transmitting printable ASCII sentences to multiple listeners (receivers). Messages typically range from about 11 to 79 characters, are human‑readable, and are generally transmitted no more rapidly than one message per second. The standard is intended for low‑bandwidth interconnection of instruments (position, speed, depth, frequency allocation, etc.), not for high‑bandwidth applications such as radar, video or large file transfers.

Key topics and technical requirements

  • One‑way serial data transmission: single talker to multiple listeners using printable ASCII characters.
  • Message format and structure: character set, fields, sentences, checksums, multi‑sentence messages and timing rules.
  • Electrical specifications: interconnecting wires, conductor definitions, shield/connector requirements, talker drive and listener receive circuits, electrical isolation and maximum bus voltage (see Clause 5).
  • Error handling: limited error‑checking capability and no guaranteed delivery - the standard warns to use caution in safety‑critical applications.
  • Message constraints: recommended typical transmission rate (~1 msg/s) and permitted message length (≈11–79 characters).
  • Manufacturer documentation and conformance: requirements for device documentation and normative references (e.g., IEC 60945, ISO/IEC 8859‑1).

Practical applications & who uses it

EN IEC 61162-1 is widely used for integrating marine electronics where simple, low‑latency sensor and navigational data must be shared aboard ships:

  • Marine equipment manufacturers building GPS, depth sounders, compasses, AIS transponders and autopilots.
  • System integrators and shipbuilders linking bridge equipment and displays.
  • Shipboard engineers and installers implementing serial interconnections and wiring.
  • Maritime software developers parsing NMEA‑style sentences for logging, display or alarm systems.
    Note: for higher message rates or networked Ethernet environments, see related standards (below).

Related standards

  • IEC 61162‑2 - faster serial transmission (multi‑talker/multi‑listener).
  • IEC 61162‑450 - Ethernet‑based shipborne networks (NMEA OneNet / modern IP transports).
  • IEC 62320 (series) - AIS messages to shore.
  • IEC 60945, IEC 61108 series - general maritime equipment testing and GNSS performance.

EN IEC 61162‑1:2024 remains essential for reliable, low‑complexity serial communication in maritime navigation systems - especially where simple, human‑readable ASCII message exchange is preferred.

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Standards Content (Sample)


SLOVENSKI STANDARD
01-julij-2024
Pomorska navigacijska in radiokomunikacijska oprema in sistemi - Digitalni
vmesniki - 1. del: Enosmerna komunikacija: en govorec - več poslušalcev (IEC
61162-1:2024)
Maritime navigation and radiocommunication equipment and systems - Digital interfaces
- Part 1: Single talker and multiple listeners (IEC 61162-1:2024)
Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt -
Digitale Schnittstellen - Teil 1: Ein Datensender und mehrere Datenempfänger (IEC
61162-1:2024)
Matériels et systèmes de navigation et de radiocommunication maritimes - Interfaces
numériques - Partie 1: Émetteur unique et récepteurs multiples (IEC 61162-1:2024)
Ta slovenski standard je istoveten z: EN IEC 61162-1:2024
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61162-1

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2024
ICS 47.020.70 Supersedes EN 61162-1:2016
English Version
Maritime navigation and radiocommunication equipment and
systems - Digital interfaces - Part 1: Single talker and multiple
listeners
(IEC 61162-1:2024)
Matériels et systèmes de navigation et de Navigations- und Funkkommunikationsgeräte und -systeme
radiocommunication maritimes - Interfaces numériques - für die Seeschifffahrt - Digitale Schnittstellen - Teil 1: Ein
Partie 1: Émetteur unique et récepteurs multiples Datensender und mehrere Datenempfänger
(IEC 61162-1:2024) (IEC 61162-1:2024)
This European Standard was approved by CENELEC on 2024-05-09. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61162-1:2024 E

European foreword
The text of document 80/1093/FDIS, future edition 6 of IEC 61162-1, prepared by IEC/TC 80 "Maritime
navigation and radiocommunication equipment and systems" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 61162-1:2024.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-02-09
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-05-09
document have to be withdrawn
This document supersedes EN 61162-1:2016 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61162-1:2024 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 61023 NOTE Approved as EN 61023
IEC 61108-1 NOTE Approved as EN 61108-1
IEC 61108-2 NOTE Approved as EN 61108-2
IEC 61108-3 NOTE Approved as EN 61108-3
IEC 61108-4 NOTE Approved as EN 61108-4
IEC 61108-5 NOTE Approved as EN IEC 61108-5
IEC 61162-2 NOTE Approved as EN 61162-2
IEC 61162-450 NOTE Approved as EN IEC 61162-450
IEC 61174 NOTE Approved as EN 61174
IEC 61924-2 NOTE Approved as EN IEC 61924-2
IEC 61993-2 NOTE Approved as EN IEC 61993-2
IEC 61996-1 NOTE Approved as EN 61996-1
IEC 61996-2 NOTE Approved as EN 61996-2
IEC 62065 NOTE Approved as EN 62065
IEC 62287-2 NOTE Approved as EN 62287-2
IEC 62288 NOTE Approved as EN IEC 62288
IEC 62320 (series) NOTE Approved as EN 62320 (series)
IEC 62320-1 NOTE Approved as EN 62320-1
IEC 62320-2 NOTE Approved as EN 62320-2
IEC 62320-3 NOTE Approved as EN 62320-3
IEC 62388 NOTE Approved as EN 62388
IEC 62616 NOTE Approved as EN 62616
IEC 62923-1 NOTE Approved as EN IEC 62923-1
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60945 - Maritime navigation and EN 60945 -
radiocommunication equipment and
systems - General requirements - Methods
of testing and required test results
ISO/IEC 8859-1 1998 Information technology - 8-bit single-byte - -
coded graphic character sets - Part 1: Latin
alphabet No.1
ITU-T 1996 Electrical characteristics for balanced - -
Recommendation double-current interchange circuits
X.27/V.11 operating at data signalling rates up to 10
Mbit/s
IEC 61162-1 ®
Edition 6.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems – Digital
interfaces –
Part 1: Single talker and multiple listeners
Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 1: Émetteur unique et récepteurs multiples
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-7831-4

– 2 – IEC 61162-1:2024 © IEC 2024
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 11
4 Manufacturer's documentation . 12
5 Hardware specification . 12
5.1 General . 12
5.2 Interconnecting wire . 12
5.3 Conductor definitions . 12
5.4 Electrical connections/shield requirements . 13
5.5 Connector . 13
5.6 Electrical signal characteristics . 13
5.6.1 General . 13
5.6.2 Signal state definitions . 13
5.6.3 Talker drive circuits . 13
5.6.4 Listener receive circuits . 13
5.6.5 Electrical isolation . 14
5.6.6 Maximum voltage on bus . 14
6 Data transmission . 14
7 Data format protocol . 15
7.1 Characters . 15
7.1.1 General . 15
7.1.2 Reserved characters . 15
7.1.3 Valid characters . 15
7.1.4 Undefined characters . 15
7.1.5 Character symbols . 15
7.1.6 Manufacturer's mnemonic code . 15
7.2 Fields . 16
7.2.1 String . 16
7.2.2 Address field . 16
7.2.3 Data fields . 17
7.2.4 Checksum field . 18
7.2.5 Sequential message identifier field . 18
7.3 Sentences . 18
7.3.1 General structure . 18
7.3.2 Description of approved sentences . 18
7.3.3 Parametric sentences . 19
7.3.4 Encapsulation sentences . 20
7.3.5 Query sentences . 22
7.3.6 Proprietary sentences . 23
7.3.7 Command sentences . 23
7.3.8 Valid sentences . 24
7.3.9 Multi-sentence messages . 24
7.3.10 Sentence transmission timing . 24
7.3.11 Additions to approved sentences . 25

IEC 61162-1:2024 © IEC 2024 – 3 –
7.3.12 Message reception timeout for multi-sentence method . 25
7.4 Error detection and handling . 25
7.5 Handling of deprecated sentences . 25
8 Data content . 25
8.1 Character definitions . 25
8.2 Field definitions . 28
8.3 Approved sentences . 31
8.3.1 General format . 31
8.3.2 AAM – Waypoint arrival alarm . 31
8.3.3 ABK – AIS addressed and binary broadcast acknowledgement . 32
8.3.4 ABM – AIS addressed binary and safety related message . 33
8.3.5 ACA – AIS channel assignment message . 34
8.3.6 ACK – Acknowledge alarm . 35
8.3.7 ACN – Alert command . 35
8.3.8 ACS – AIS channel management information source . 36
8.3.9 AGL – Alert group list . 37
8.3.10 AIR – AIS interrogation request . 37
8.3.11 AKD – Acknowledge detail alarm condition . 39
8.3.12 ALA – Report detailed alarm condition . 39
8.3.13 ALC – Cyclic alert list . 40
8.3.14 ALF – Alert sentence . 41
8.3.15 ALR – Set alarm state . 44
8.3.16 APB – Heading/track controller (autopilot) sentence B . 44
8.3.17 ARC – Alert command refused . 45
8.3.18 BBM – AIS broadcast binary message . 45
8.3.19 BEC – Bearing and distance to waypoint – Dead reckoning . 46
8.3.20 BOD – Bearing origin to destination . 47
8.3.21 BWC – Bearing and distance to waypoint – Great circle . 47
8.3.22 BWR – Bearing and distance to waypoint – Rhumb line . 47
8.3.23 BWW – Bearing waypoint to waypoint . 47
8.3.24 CUR – Water current layer – Multi-layer water current data . 48
8.3.25 DBT – Depth below transducer . 48
8.3.26 DDC – Display dimming control . 48
8.3.27 DOR – Door status detection . 51
8.3.28 DPT – Depth . 53
8.3.29 DSC – Digital selective calling information . 53
8.3.30 DSE – Expanded digital selective calling . 54
8.3.31 DTM – Datum reference . 54
8.3.32 EPM – Command or report long equipment property value. 55
8.3.33 EPV – Command or report equipment property value . 56
8.3.34 ETL – Engine telegraph operation status . 58
8.3.35 EVE – General event message . 59
8.3.36 FIR – Fire detection . 59
8.3.37 FSI – Frequency set information . 60
8.3.38 GBS – GNSS satellite fault detection . 61
8.3.39 GDC – GNSS differential correction . 64
8.3.40 GEN – Generic binary information . 67
8.3.41 GFA – GNSS fix accuracy and integrity . 68
8.3.42 GGA – Global positioning system (GPS) fix data. 69

– 4 – IEC 61162-1:2024 © IEC 2024
8.3.43 GLL – Geographic position – Latitude/longitude . 69
8.3.44 GNS – GNSS fix data . 70
8.3.45 GRS – GNSS range residuals . 72
8.3.46 GSA – GNSS DOP and active satellites . 75
8.3.47 GST – GNSS pseudorange error statistics . 78
8.3.48 GSV – GNSS satellites in view . 78
8.3.49 HBT – Heartbeat supervision sentence . 81
8.3.50 HCR – Heading correction report . 81
8.3.51 HDG – Heading, deviation and variation . 82
8.3.52 HDT – Heading true . 82
8.3.53 HMR – Heading monitor receive . 82
8.3.54 HMS – Heading monitor set . 83
8.3.55 HRM – Heel angle, roll period and roll amplitude measurement device . 83
8.3.56 HSC – Heading steering command . 85
8.3.57 HSS – Hull stress surveillance systems . 85
8.3.58 HTC – Heading/track control command; HTD – Heading /track control
data . 85
8.3.59 LR1 – AIS long-range reply sentence 1 . 87
8.3.60 LR2 – AIS long-range reply sentence 2 . 87
8.3.61 LR3 – AIS long-range reply sentence 3 . 88
8.3.62 LRF – AIS long-range function . 88
8.3.63 LRI – AIS long-range interrogation . 89
8.3.64 MOB – Man over board notification . 90
8.3.65 MSK – MSK receiver interface . 91
8.3.66 MSS – MSK receiver signal status . 92
8.3.67 MTW – Water temperature . 92
8.3.68 MWD – Wind direction and speed . 92
8.3.69 MWV – Wind speed and angle . 92
8.3.70 NAK – Negative acknowledgement . 93
8.3.71 NLS – Navigation light status . 94
8.3.72 NRM – NAVTEX receiver mask . 95
8.3.73 NRX – MSI received message . 96
8.3.74 NSR – Navigation status report . 98
8.3.75 OSD – Own ship data . 99
8.3.76 POS – Device position and ship dimensions report or configuration

command . 100
8.3.77 PRC – Propulsion remote control status . 101
8.3.78 RLM – Return link message . 102
8.3.79 RMA – Recommended minimum specific LORAN-C data . 103
8.3.80 RMB – Recommended minimum navigation information . 103
8.3.81 RMC – Recommended minimum specific GNSS data . 104
8.3.82 ROR – Rudder order status . 106
8.3.83 ROT – Rate of turn . 106
8.3.84 RPM – Revolutions . 106
8.3.85 RRT – Report route transfer . 106
8.3.86 RSA – Rudder sensor angle. 108
8.3.87 RSD – Radar system data . 108
8.3.88 RTE – Routes . 109
8.3.89 SEL – Selection report . 109

IEC 61162-1:2024 © IEC 2024 – 5 –
8.3.90 SFI – Scanning frequency information . 110
8.3.91 SLM – Steering location/mode . 111
8.3.92 SM1 – SafetyNET Message, All Ships/NavArea . 112
8.3.93 SM2 – SafetyNET Message, Coastal Warning Area . 114
8.3.94 SM3 – SafetyNET Message, Circular Area address . 116
8.3.95 SM4 – SafetyNET Message, Rectangular Area Address . 118
8.3.96 SMB – IMO SafetyNET Message Body . 121
8.3.97 SMV – SafetyNET Message, Vessel in distress information . 122
8.3.98 SPW – Security password sentence . 124
8.3.99 SSD – AIS ship static data . 125
8.3.100 STN – Multiple data ID . 126
8.3.101 THS – True heading and status . 126
8.3.102 TLB – Target label . 126
8.3.103 TLL – Target latitude and longitude . 127
8.3.104 TRC – Thruster control data . 127
8.3.105 TRD – Thruster response data . 128
8.3.106 TRL – AIS transmitter-non-functioning log . 128
8.3.107 TTD – Tracked target data . 129
8.3.108 TTM – Tracked target message . 132
8.3.109 TUT – Transmission of multi-language text . 132
8.3.110 TXT – Text transmission . 133
8.3.111 UID – User identification code transmission . 134
8.3.112 VBC – Water-referenced and ground-referenced docking speed data . 134
8.3.113 VBW – Dual ground/water speed . 135
8.3.114 VDM – AIS VHF data-link message . 135
8.3.115 VDO – AIS VHF data-link own-vessel report . 136
8.3.116 VDR – Set and drift . 137
8.3.117 VER – Version . 137
8.3.118 VHW – Water speed and heading . 138
8.3.119 VLW – Dual ground/water distance . 138
8.3.120 VPW – Speed measured parallel to wind . 138
8.3.121 VSD – AIS voyage static data . 138
8.3.122 VTG – Course over ground and ground speed . 140
8.3.123 WAT – Water level detection . 140
8.3.124 WCV – Waypoint closure velocity . 141
8.3.125 WNC – Distance waypoint to waypoint . 142
8.3.126 WPL – Waypoint location . 142
8.3.127 XDR – Transducer measurements . 142
8.3.128 XTE – Cross-track error, measured . 145
8.3.129 XTR – Cross-track error, dead reckoning . 145
8.3.130 ZDA – Time and date . 146
8.3.131 ZDL – Time and distance to variable point . 146
8.3.132 ZFO – UTC and time from origin waypoint . 146
8.3.133 ZTG – UTC and time to destination waypoint . 146
9 Applications . 147
9.1 Example parametric sentences . 147
9.1.1 General . 147
9.1.2 Example 1 – LORAN-C latitude/longitude . 147
9.1.3 Example 2 – LORAN-C arrival alarm . 147

– 6 – IEC 61162-1:2024 © IEC 2024
9.1.4 Example 3 – Proprietary sentence . 148
9.1.5 Example 4 – RMA examples . 148
9.1.6 Example 5 – FSI examples . 149
9.1.7 Example 6 – MSK/MSS examples . 149
9.1.8 Example 7 – DSC and DSE sentences . 150
9.1.9 Example 8 – FIR, DOR and WAT sentences . 150
9.2 Example encapsulation sentences . 151
9.3 Examples of receiver diagrams . 151
Annex A (informative) Example encapsulation sentence . 152
A.1 Example encapsulation sentence . 152
A.2 AIS VHF data-link message VDM sentence encapsulation example . 152
A.3 Background discussion – Encapsulation coding . 152
A.4 Decoding the encapsulated string . 156
A.5 Conversion from symbols to binary bits . 156
A.6 Organising the binary message data . 157
A.7 Interpreting the decoded binary strings . 157
Annex B (normative) Guidelines for methods of testing and required test results . 158
B.1 General . 158
B.2 Definition of environmental conditions for the tests . 158
B.3 Examination of the manufacturer's documentation . 158
B.4 Test of hardware . 159
B.4.1 Interface units . 159
B.4.2 Input circuit test . 159
B.4.3 Check of electrical isolation . 159
B.4.4 Maximum input voltage test . 159
B.4.5 Test arrangement for performance tests according to IEC 60945 . 159
B.4.6 Test under maximum interface workload . 159
B.4.7 Test for correct parsing of sentences . 160
B.4.8 Test under long term conditions . 161
B.4.9 Protocol test of the interface of the EUT . 161
Annex C (normative) Six-bit binary field conversion . 167
Annex D (normative) Alarm system fields . 170
Annex E (informative) Example of use of FIR, DOR and WAT sentences . 178
E.1 Example of the use of system status messages . 178
E.2 Use of system division codes . 178
E.3 Send complete status. 179
E.4 Change measurement point status . 180
E.5 Point status change during a status update . 180
E.6 Failure in a sub-system . 180
E.7 Status updates when a sub-system is in fault . 181
E.8 Signal a correction of a sub-system fault . 181
Bibliography . 182

Figure 1 – Listener receive circuit . 14
Figure 2 – Data transmission format . 14
Figure 3 – Example 1, J-FET, N channel, opto-isolator based listener circuit . 151
Figure 4 – Example 2, NPN opto-isolator based listener circuit . 151

IEC 61162-1:2024 © IEC 2024 – 7 –
Figure A.1 – Message data format . 154
Figure A.2 – Work sheet for decoding and interpreting encapsulated string. 155
Figure C.1 – 6-bit binary code converted to valid IEC 61162-1 character . 168
Figure C.2 – Valid IEC 61162-1 character converted to 6-bit binary code . 169
Figure E.1 – Example system diagram . 179

Table 1 – Reserved characters . 26
Table 2 – Valid characters . 26
Table 3 – Character symbol . 27
Table 4 – Talker identifier mnemonics . 28
Table 5 – Field type summary . 30
Table A.1 – Example message from ITU-R M.1371 . 153
Table B.1 – Example – Special characters . 160
Table B.2 – Example – Parsing . 160
Table B.3 – Example – Future extensions . 161
Table B.4 – Example – Data string GGA sent by the EUT to the test receiver (listener) . 162
Table B.5 – Example – Checksum data sent . 163
Table B.6 – Example – Data string GNS received by the EUT . 164
Table B.7 – Example – Checksum data received . 165
Table B.8 – Example – Break of data line . 166
Table B.9 – Example – Receiving interval . 166
Table B.10 – Example – Talker ID . 166
Table C.1 – Six-bit binary field conversion table . 167
Table D.1 – System alarm fields . 170

– 8 – IEC 61162-1:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS – DIGITAL INTERFACES –

Part 1: Single talker and multiple listeners

FOREWORD
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all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
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shall not be held responsible for identifying any or all such patent rights.
IEC 61162-1 has been prepared by IEC technical committee 80: Maritime navigation and
radiocommunication equipment and systems. It is an International Standard.
This sixth edition cancels and replaces the fifth edition published in 2016. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alternative hardware is given in 5.1 which may now be as specified in this document or as
specified in IEC 61162-2;
b) the data transmission rate given in Clause 6 is now configurable. The default remains as
4 800 (bits/s) but higher rates may be provided;

IEC 61162-1:2024 © IEC 2024 – 9 –
c) new identifiers have been added to Table 4;
d) new sentences AGL, EPM, GDC, NLS, SEL, SLM, SMV and VBC have been added;
e) revisions have been made to ABK, ABM, ACN, ALC, ALF, ARC, BBM, DDC, DTM, EPV, FIR,
GBS, GFA, GLL, GNS, GRS, GSA, GST, GSV, HRM, NRX, POS, RLM, ROR, RSA, TLB,
TTD, VSD and XDR;
f) the previous Annex A, Glossary, has been deleted as being of historical interest.
The text of this International Standard is based on the following documents:
Draft Report on voting
80/1093/FDIS 80/1097/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 61162 series, published under the general title Maritime navigation
and radiocommunication equipment and systems – Digital interfaces, can be found on the IEC
website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
...

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Frequently Asked Questions

SIST EN IEC 61162-1:2024 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 1: Single talker and multiple listeners (IEC 61162-1:2024)". This standard covers: IEC 61162-1:2024 contains the requirements for data communication between maritime electronic instruments, navigation and radiocommunication equipment when interconnected via an appropriate system. This document is intended to support one-way serial data transmission from a single talker to one or more listeners. These data are in printable ASCII form and can include information such as position, speed, depth, frequency allocation, etc. Typical messages can be from about 11 to a maximum of 79 characters in length and generally require transmission no more rapidly than one message per second. The electrical definitions in this document are not intended to accommodate high-bandwidth applications such as radar or video imagery, or intensive database or file transfer applications. Since there is no provision for guaranteed delivery of messages and only limited error checking capability, it is important this document is used with caution in all safety applications. For applications where a faster transmission rate is necessary, IEC 61162-2 applies. For applications to shore based equipment of the automatic identification system (AIS) the IEC 62320 series applies.

IEC 61162-1:2024 contains the requirements for data communication between maritime electronic instruments, navigation and radiocommunication equipment when interconnected via an appropriate system. This document is intended to support one-way serial data transmission from a single talker to one or more listeners. These data are in printable ASCII form and can include information such as position, speed, depth, frequency allocation, etc. Typical messages can be from about 11 to a maximum of 79 characters in length and generally require transmission no more rapidly than one message per second. The electrical definitions in this document are not intended to accommodate high-bandwidth applications such as radar or video imagery, or intensive database or file transfer applications. Since there is no provision for guaranteed delivery of messages and only limited error checking capability, it is important this document is used with caution in all safety applications. For applications where a faster transmission rate is necessary, IEC 61162-2 applies. For applications to shore based equipment of the automatic identification system (AIS) the IEC 62320 series applies.

SIST EN IEC 61162-1:2024 is classified under the following ICS (International Classification for Standards) categories: 33.060.01 - Radiocommunications in general; 47.020.70 - Navigation and control equipment. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN IEC 61162-1:2024 has the following relationships with other standards: It is inter standard links to SIST EN 61162-1:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase SIST EN IEC 61162-1:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.

SIST EN IEC 61162-1:2024は、海上航行および無線通信機器とシステム間のデータ通信に関する要件を定めた重要な標準です。この標準は、単一のトーカーから複数のリスナーへの一方向のシリアルデータ伝送をサポートすることを目的としています。これは、航海用電子機器が接続される際の適切なシステムを介した通信に必要な基準を提供します。 この標準の強みは、そのシンプルさと明確さにあります。デジタル通信が必須となる海上の環境において、ポジション、速度、深度、周波数割り当てなどの情報をASCII形式で伝送する能力は、海上運用の効率性を高める上で非常に重要です。メッセージの長さは約11から最大79文字であり、一般に1秒あたり1メッセージ程度の伝送速度を要します。この定義により、データ伝送の基本的な要件が明確にされ、海洋での通信の標準化が進められます。 ただし、注意が必要な点もあります。高帯域幅アプリケーションや集中的なデータベース、ファイル転送アプリケーションはこの標準の範囲外であるため、これらのニーズには他の標準(例えばIEC 61162-2やIEC 62320シリーズ)を利用する必要があります。また、メッセージの保証配送がないことや、エラーチェック機能が限られているため、安全に関わる用途で使用する際は慎重に取り扱う必要があります。 このように、SIST EN IEC 61162-1:2024は、海上データ通信における標準化の基盤を提供し、特定のアプリケーションにおいてその関連性を示しています。ビジネスや海上運行の安全を考える際に不可欠な文書と言えるでしょう。

SIST EN IEC 61162-1:2024 표준은 해양 내비게이션 및 통신 장비와 시스템 간의 데이터 통신 요건을 규정하고 있습니다. 이 문서는 단일 송신자에서 다수의 청취자에게 일방향 직렬 데이터 전송을 지원하며, 이를 통해 해양 전자 기기 간의 효과적인 상호 작용을 가능하게 합니다. 표준의 강점 중 하나는 가독성이 높은 ASCII 형식으로 데이터를 전송할 수 있도록 설계되었다는 점입니다. 이로 인해 위치, 속도, 깊이 및 주파수 할당 등의 중요 정보를 쉽게 전달할 수 있습니다. 전송되는 메시지는 길이가 약 11자에서 최대 79자까지 다양하며, 일반적으로 초당 하나의 메시지를 전송하는 데 적합합니다. 이러한 특성은 해양 응용 분야에서의 원활한 데이터 통신을 가능하게 하며, 해양 내비게이션 및 통신 시스템에서의 활용도를 높입니다. 그러나 표준 내의 전기적 정의는 레이더 및 비디오 이미지 전송과 같은 고대역폭 응용 프로그램을 지원하지 않기 때문에, 보다 빠른 전송 속도가 필요한 응용 프로그램에는 IEC 61162-2를 참조해야 합니다. 이와 함께 자동 식별 시스템(AIS)과 관련된 육상 장비에 대해서는 IEC 62320 시리즈가 적용됩니다. 중요한 점은 이 문서가 메시지의 보장된 전달을 제공하지 않으며 제한된 오류 검사 기능만 갖추고 있다는 것입니다. 따라서 안전 응용 프로그램에서 사용 시 주의가 필요합니다. SIST EN IEC 61162-1:2024 표준은 해양 전자 기기 간의 신뢰할 수 있는 데이터 통신을 위한 기초를 제공하며, 관련 분야에서 다양한 응용 가능성을 제시하는 중요한 문서입니다.

The SIST EN IEC 61162-1:2024 standard outlines crucial requirements for data communication among maritime electronic instruments, navigation, and radiocommunication equipment, providing a solid framework for practitioners in the maritime industry. Its scope emphasizes the importance of one-way serial data transmission from a single talker to multiple listeners, which is vital in ensuring that various maritime devices can communicate effectively. One of the strengths of the IEC 61162-1:2024 standard is its focus on the use of printable ASCII form data, facilitating clear and straightforward communication of essential information such as position, speed, and depth. The specification of typical message lengths, from 11 to 79 characters, along with a moderate transmission rate of no more than one message per second, allows for a structured approach that balances clarity with efficiency. Another relevant aspect is the standard's explicit limitations regarding the type of applications it supports. By specifying that it does not accommodate high-bandwidth applications like radar or video, the IEC 61162-1:2024 ensures that users understand its appropriate context, thus preventing misuse in safety-critical applications. The caution advised for safety applications underlines its relevance and necessity in maritime operations, highlighting that while the standard is versatile, its application requires discretion due to limited error checking and no guaranteed message delivery. In the context of integrated maritime systems, the relationship to other standards such as IEC 61162-2 for higher transmission rates and the IEC 62320 series for automatic identification systems (AIS) enhances its relevance. It provides a clear direction for users seeking faster or more comprehensive data solutions, thereby establishing the IEC 61162-1:2024 not only as a standalone guideline but also as a component within the broader framework of maritime communication standards. Overall, the SIST EN IEC 61162-1:2024 standard serves as an essential reference for maritime electronics, reinforcing the importance of clear data transmission while maintaining awareness of its limitations and scope. This standard is undoubtedly a valuable tool for professionals aiming to enhance communication protocols within maritime navigation and radiocommunication systems.