IEC 61162-2:2024 PDF

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 2: Single talker and multiple listeners, high-speed transmission

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Title (English):

IEC 61162-2:2024

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 2: Single talker and multiple listeners, high-speed transmission

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 53
Publication date:: April 4, 2024
Edition:: IEC IS 61162 edition 2 version 1
ICS:: 47.020.70

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Description (English):

IEC 61162-2:2024 contains the requirements for data communication between maritime electronic instruments, navigation and radiocommunication equipment when interconnected via an appropriate interface. This document is intended to support one-way serial data transmission from a single talker to one or more listeners. This data is in printable ASCII form and can include any information as specified by approved sentences or information coded according to the rules for proprietary sentences. Typical messages can be from 11 to a maximum of 79 characters in length and generally require repetition rates up to once per 20 ms. The electrical definitions in this document are intended to accommodate higher data rates than are specified in IEC 61162-1. 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.

Technical details

Technical committee: TC 80 - Maritime navigation and radiocommunication equipment and systems
SKU: IEC 61162-2:2024

Abstract

Overview

IEC 61162-2:2024 - "Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 2: Single talker and multiple listeners, high‑speed transmission" specifies requirements for one‑way serial data communication between maritime electronic instruments, navigation and radiocommunication equipment. The standard defines a single talker / multiple listeners architecture using printable ASCII sentences (approved or proprietary), supports higher electrical data rates than IEC 61162-1, and is intended for high‑speed transmission scenarios. The 2024 edition is a technical revision (Edition 2.0) that updates hardware alternatives and makes the data transmission rate configurable (default 38 400 bit/s).

Key topics and technical requirements

One‑way serial transmission: data flows from a single talker to one or more listeners; no multi‑talk/arbiter mechanism.
Data format: printable ASCII sentences as per approved or proprietary sentence rules; typical messages are about 11 to 79 characters.
Timing: messages may require repetition rates up to once per 20 ms.
Configurable data rate: electrical definitions accommodate higher rates than IEC 61162-1; default remains 38 400 bit/s but higher rates may be used.
Electrical and connector specifications: includes wiring, shielding, connector and isolation guidance to support high‑speed balanced circuits.
Limited delivery guarantees: there is no guaranteed delivery mechanism and only limited error‑checking - the standard explicitly warns against using it for safety‑critical functions without caution.
Testing and validation: methods for interface, electrical and protocol testing, including workload and ambient condition tests, are specified.

Practical applications

IEC 61162-2 is used to interconnect maritime instruments and bridge equipment where fast, one‑way data broadcast is needed. Typical applications include:

High‑speed distribution of navigation sensor data to multiple bridge displays and subsystems
Interconnection of radiocommunication devices with onboard loggers and monitors
Integration of proprietary sentence streams between equipment vendors

Because error checking and delivery guarantees are limited, IEC 61162-2 is best applied to non‑safety‑critical data distribution or in architectures where higher‑level redundancy/error handling is implemented.

Who should use this standard

Manufacturers of maritime navigation and radiocommunication equipment
System integrators and bridge system designers
Shipyards and vessel automation teams
Test laboratories and certification bodies validating interface compliance

Related standards (normative / informative)

IEC 61162-1 (Part 1: single talker and multiple listeners, baseline data format & protocols)
IEC 60945 (general requirements and test methods for maritime equipment)
ITU‑T X.27 / V.11 and EIA‑485 (electrical characteristics for balanced high‑speed circuits)
NMEA 0183 (widely referenced sentence structure for maritime sensors)

Keywords: IEC 61162-2:2024, maritime digital interfaces, single talker multiple listeners, high‑speed transmission, printable ASCII, serial data transmission, 38 400 bit/s, IEC 61162-1, NMEA 0183.

Related standards

Mentioned in the description and other IEC standards

Abstract

Overview

Key topics and technical requirements

One‑way serial transmission: data flows from a single talker to one or more listeners; no multi‑talk/arbiter mechanism.
Data format: printable ASCII sentences as per approved or proprietary sentence rules; typical messages are about 11 to 79 characters.
Timing: messages may require repetition rates up to once per 20 ms.
Configurable data rate: electrical definitions accommodate higher rates than IEC 61162-1; default remains 38 400 bit/s but higher rates may be used.
Electrical and connector specifications: includes wiring, shielding, connector and isolation guidance to support high‑speed balanced circuits.
Limited delivery guarantees: there is no guaranteed delivery mechanism and only limited error‑checking - the standard explicitly warns against using it for safety‑critical functions without caution.
Testing and validation: methods for interface, electrical and protocol testing, including workload and ambient condition tests, are specified.

Practical applications

IEC 61162-2 is used to interconnect maritime instruments and bridge equipment where fast, one‑way data broadcast is needed. Typical applications include:

High‑speed distribution of navigation sensor data to multiple bridge displays and subsystems
Interconnection of radiocommunication devices with onboard loggers and monitors
Integration of proprietary sentence streams between equipment vendors

Who should use this standard

Manufacturers of maritime navigation and radiocommunication equipment
System integrators and bridge system designers
Shipyards and vessel automation teams
Test laboratories and certification bodies validating interface compliance

Related standards (normative / informative)

IEC 61162-1 (Part 1: single talker and multiple listeners, baseline data format & protocols)
IEC 60945 (general requirements and test methods for maritime equipment)
ITU‑T X.27 / V.11 and EIA‑485 (electrical characteristics for balanced high‑speed circuits)
NMEA 0183 (widely referenced sentence structure for maritime sensors)

Keywords: IEC 61162-2:2024, maritime digital interfaces, single talker multiple listeners, high‑speed transmission, printable ASCII, serial data transmission, 38 400 bit/s, IEC 61162-1, NMEA 0183.

IEC 61162-2:2024 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards (normative / informative)

Related standards

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards (normative / informative)

Related standards

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