ISO 25197:2020/Amd 1:2022 PDF

Overview

ISO 25197:2020/Amd 1:2022 is an important international amendment to the ISO 25197:2020 standard, published by the International Organization for Standardization (ISO). This amendment updates requirements for electrical and electronic control systems used in small craft for steering, shifting, and throttle control. The update reflects advancements in small craft control technologies and harmonizes related normative references with the latest ISO and IEC standards.

The standard amendment focuses on ensuring reliable, safe, and interoperable control systems in applications such as recreational boats, small commercial vessels, and other small watercraft. It provides guidelines for manufacturers, designers, and operators to meet global safety and performance benchmarks in control system design and documentation.

Key Topics

• Normative References Update: The amendment removes older standards and replaces them with updated versions such as:

  • ISO 8848:2022 (Remote mechanical steering systems)
  • ISO 10592:2022 (Remote hydraulic steering systems)
  • ISO 13297:2020 and its amendment (Electrical systems – AC/DC installations)
  • IEC 61000-4-3:2020 and IEC 61000-4-11:2020 (Electromagnetic compatibility testing)

• Terminology Changes: Introduction of the term "main steering position", defined as the primary steering control point designated by the manufacturer.

• System Requirements:

  • Both AC and DC electrical systems must comply with the updated ISO 13297:2020 series.
  • Helm stations must provide clear visual indications when control systems are active.
  • Digital power steering (DPS) systems require a display of the precision value at the main steering position.

• Manuals and Documentation: Clarifies that the owner’s manual must include detailed information such as helm station locations including the main steering position, referring to ISO 10240 for manual requirements.

• Electromagnetic Compatibility (EMC): Updates electromagnetic immunity testing references to the latest IEC editions ensuring better resistance to radio-frequency interference and voltage disturbances.

Practical Applications

ISO 25197:2020/Amd 1:2022 serves manufacturers, designers, and operators in the marine industry by providing a robust framework to:

• Enhance safety and reliability of electrical/electronic controls for steering, throttle, and shift systems in small craft.
• Facilitate compliance with international safety and performance standards for new and retrofitted small craft systems.
• Ensure consistent user experience by defining clear requirements for control activation indication and visual displays at helm stations.
• Improve maintenance and user instructions through updated owner’s manual guidelines that enhance operational awareness and safety.
• Support integration of advanced digital steering systems such as DPS with clear precision feedback at designated steering positions.
• Address electromagnetic compatibility challenges by adhering to stringent testing standards protecting control systems from interference.

This amendment is essential knowledge for compliance officers, marine engineers, and product developers focused on small watercraft control systems.

Related Standards

To complement the guidance in ISO 25197:2020/Amd 1:2022, the following standards are closely related and provide additional technical detail:

• ISO 8848:2022 – Small craft – Remote mechanical steering systems
• ISO 10592:2022 – Small craft – Remote hydraulic steering systems
• ISO 13297:2020 & Amendment 1:2022 – Small craft – Electrical systems for AC and DC installations
• IEC 61000-4-3:2020 – Electromagnetic compatibility (EMC) – Radiated RF immunity testing
• IEC 61000-4-11:2020 – EMC – Voltage dips and short interruptions immunity tests
• ISO 10240 – Small craft – Owner’s manual standards
• ISO 11591 – Small craft – Field of vision from the steering position

Adhering to these interlinked standards ensures comprehensive compliance and enhances operational safety in small craft control system design and use.

Keywords: ISO 25197 Amendment 1, small craft control systems, electrical steering systems, marine throttle control, shift system standards, small craft owner’s manual, marine electromagnetic compatibility, digital power steering, helm station safety.