IEC 62287-2-2017 PDF

Full title and description

Maritime navigation and radiocommunication equipment and systems — Class B shipborne equipment of the automatic identification system (AIS) — Part 2: Self-organising time division multiple access (SOTDMA) techniques. This International Standard specifies operational and performance requirements, test methods and required test results for Class B "SO" shipborne AIS equipment that uses SOTDMA as described in ITU‑R M.1371.

Abstract

IEC 62287-2:2017 defines functional, environmental, radio and protocol requirements for Class B SOTDMA AIS transponders (so‑called Class B "SO") used on small craft and other vessels not subject to mandatory SOLAS AIS carriage. The second edition (2017) adds long‑range broadcast capability by permitting transmission of Message 27 on channels 75 and 76 and updates references to the then‑current ITU‑R recommendation and related IEC maritime standards. The document also covers GNSS integration, message timing and intervals, physical and EMC tests, user interface and documentation requirements, and required laboratory test procedures.

General information

• Status: Published International Standard (IEC TC 80).
• Publication date: 7 February 2017.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 47.020.70 — Maritime navigation and radiocommunication equipment and systems.
• Edition / version: Edition 2.0 (2017).
• Number of pages: 92 pages.

(Core bibliographic details above are taken from the IEC publication record for IEC 62287-2:2017.)

Scope

IEC 62287-2:2017 is applicable to Class B "SO" AIS transponders that implement Self‑Organising Time Division Multiple Access (SOTDMA) in accordance with ITU‑R M.1371. It covers operational and performance requirements, methods of testing and the required test results for functionality, transmitter/receiver characteristics, internal GNSS reporting, link and network layer behaviour, user interfaces and presentation, environmental and EMC conditions, and documentation/marking necessary for safe and interoperable operation. The edition explicitly includes provisions for long‑range broadcasting via Message 27 on VHF channels 75 and 76.

Key topics and requirements

• Definition of Class B SOTDMA operational behaviour and link‑layer MAC procedures to self‑organise TDMA slots (SOTDMA per ITU‑R M.1371).
• Required message sets, reporting intervals (including extended intervals up to 5 s), and Message 27 long‑range broadcast capability on channels 75/76.
• Internal GNSS requirements (use of internal receiver; restrictions on external position input) and position reporting integrity.
• Transmitter and receiver performance limits, channel usage, and selectable power levels (including higher 5 W level where applicable).
• Environmental, EMC, power‑supply, vibration, shock and physical tests with specified pass/fail criteria and test methods.
• Presentation and digital interface requirements, mandatory documentation, marking, built‑in integrity tests and protection against invalid control commands.

These technical topics and test requirements are intended to ensure interoperability, safety and reliable performance of Class B SOTDMA AIS equipment.

Typical use and users

Manufacturers of AIS transponders and maritime radio equipment, test laboratories performing type approval and conformity assessment, shipyards and boatbuilders specifying AIS fitment on small craft, system integrators and maritime software vendors consuming AIS data, flag administrations and port authorities when setting procurement or acceptance criteria, and classification societies involved in equipment certification. The standard is used when designing, testing, certifying and integrating Class B "SO" AIS units.

Related standards

IEC 62287-2 is part of the IEC 62287 series for Class B AIS equipment and is related to IEC 62287-1 (Class B with carrier‑sensing), IEC 61993‑2 (other AIS functional/testing material), and to ITU‑R Recommendation M.1371 (AIS technical characteristics and message formats). It also aligns with SOLAS Chapter V carriage/regulation contexts where applicable and references other IEC maritime EMC, environmental and GNSS interface standards used in testing and compliance.

Keywords

AIS, Class B, SOTDMA, self‑organising TDMA, Message 27, VHF channels 75/76, ITU‑R M.1371, maritime navigation, transponder testing, GNSS, IEC 62287, type approval, maritime EMC tests.

FAQ

Q: What is this standard?

A: IEC 62287-2:2017 is the IEC International Standard that specifies requirements and test methods for Class B "SO" (self‑organising) AIS transponders using SOTDMA.

Q: What does it cover?

A: It covers operational behaviour, message types and intervals, internal GNSS requirements, radio transmitter/receiver performance, environmental and EMC tests, user interface and documentation, and specific link/network layer tests for Class B SOTDMA AIS equipment — including the 2017 addition permitting Message 27 long‑range broadcasts on channels 75 and 76.

Q: Who typically uses it?

A: Equipment manufacturers, test and certification laboratories, shipbuilders, maritime authorities, system integrators and software vendors working with AIS data and installations.

Q: Is it current or superseded?

A: The document provided here is the second edition published in 2017 (Edition 2.0). Users should check the IEC publication record or national standards bodies for any amendments or newer editions published after 2017 before relying on it for conformity assessment.

Q: Is it part of a series?

A: Yes — IEC 62287 is a multi‑part series covering Class B AIS equipment (for example, IEC 62287-1 covers Class B carrier‑sensing devices and IEC 62287-2 covers SOTDMA devices); the series interacts with other IEC and ITU‑R standards for AIS and maritime equipment testing.

Q: What are the key keywords?

A: AIS, Class B, SOTDMA, TDMA, Message 27, channels 75/76, ITU‑R M.1371, GNSS, maritime radio, testing, IEC 62287.