ISO 25197-2020 amd1-2022 PDF

Full title and description

ISO 25197:2020 — Small craft — Electrical/electronic control systems for steering, shift and throttle — Amendment 1:2022 (ISO 25197:2020/Amd 1:2022). This product page covers the second edition of ISO 25197 (2020) and the published Amendment 1 (2022) which update and clarify requirements for electrical/electronic steering, shift and throttle control systems and associated dynamic positioning controls on small craft.

Abstract

This standard establishes requirements for the design, construction and testing of electrical and electronic steering, shift and throttle control systems, and dynamic positioning control systems or combinations thereof, for small craft with hull length up to 24 m. The document addresses system-level requirements, functional performance and test provisions to ensure safe and reliable control of propulsion and steering functions. It excludes electric trolling motors and autopilot systems on sailing craft. Amendment 1 updates and clarifies specific technical and editorial points in the 2020 edition.

General information

• Status: Published
• Publication date: ISO 25197: April 2020; Amendment 1 published October 3, 2022.
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 47.080 (Small craft)
• Edition / version: Edition 2 (2020) with Amendment 1:2022
• Number of pages: 22 (main standard) + 3 (Amendment 1)

Scope

The standard applies to electrical/electronic systems used to control steering, gear/shift and throttle for small craft with hull length up to 24 m, and to dynamic positioning control systems when combined with these controls. It sets out system design, construction and testing requirements intended to ensure functional performance and safety of control systems used for maneuvering and propulsion commands. It does not apply to electric trolling motors or to autopilot systems fitted on sailing vessels.

Key topics and requirements

• Design and construction requirements for electrical/electronic steering, shift and throttle systems.
• Functional performance criteria and testing procedures for control systems and components.
• Requirements for dynamic positioning controls when integrated with steering/propulsion controls.
• Documentation, marking and information to be supplied with control systems (installation, operation and maintenance guidance).
• Safety and reliability considerations appropriate to small craft control systems (including fault behaviour and safe state requirements).
• Amendment-specific clarifications and technical/editorial corrections introduced in Amendment 1 (2022).

Typical use and users

Primary users are manufacturers and designers of control systems for small craft, marine system integrators, test laboratories, conformity assessment bodies, surveyors and compliance officers, and naval architects involved with small craft up to 24 m. The standard is also used by purchasers, maintenance organizations and regulatory authorities assessing the suitability and safety of electrical/electronic steering, shift and throttle systems.

Related standards

Related and commonly referenced documents include the earlier ISO 25197:2012 (withdrawn), other ISO/TC 188 publications addressing small craft safety and systems (for example ISO 15083:2020, ISO TR 10134:2020, ISO 10240:2022) and relevant functional-safety and electrical standards referenced in ISO 25197 (normative references may include IEC/ISO functional-safety guidance such as IEC 61508 where applicable). National and regional adoptions (EN/ISO versions) and subsequent amendments or corrigenda may also be relevant.

Keywords

small craft, electrical control systems, electronic control, steering systems, shift control, throttle control, dynamic positioning, ISO 25197, marine control systems, ISO/TC 188

FAQ

Q: What is this standard?

A: ISO 25197:2020 (Edition 2) sets requirements for electrical/electronic steering, shift and throttle control systems and dynamic positioning controls on small craft; Amendment 1:2022 provides updates and clarifications to the 2020 edition.

Q: What does it cover?

A: It covers system design, construction, performance and testing requirements for control systems used to maneuver small craft (hull length up to 24 m). It also specifies documentation and information to be supplied. The standard excludes electric trolling motors and autopilot systems on sailing craft.

Q: Who typically uses it?

A: Manufacturers, designers, integrators, testing and certification bodies, surveyors, regulatory authorities, maintenance organisations and purchasers of marine control systems for small craft.

Q: Is it current or superseded?

A: The current normative edition is ISO 25197:2020 (Edition 2) and it has been updated by Amendment 1 published in 2022. The 2012 edition and its amendment are withdrawn and replaced by the 2020 edition with Amendment 1:2022.

Q: Is it part of a series?

A: ISO 25197 is part of ISO/TC 188's portfolio addressing small craft safety and systems. It is commonly used alongside other small-craft standards (for example ISO 15083, ISO TR 10134, ISO 10240) and may reference broader electrical and functional-safety standards where applicable.

Q: What are the key keywords?

A: small craft; electrical/electronic control; steering; shift; throttle; dynamic positioning; marine control systems; ISO 25197; functional performance; testing.