ISO 19697:2026

Overview

ISO 19697:2026, titled Ships and marine technology - Navigation and ship operations - Electronic inclinometers, sets out the international standard for the performance, testing, and application of electronic inclinometers on maritime vessels. Developed by the International Organization for Standardization (ISO), this standard is closely aligned with the IMO Resolution MSC.363 (92) and encompasses the general requirements found in IMO Resolution A.694 (17). It is specifically designed for electronic inclinometers that support navigation safety and ship operations, particularly for monitoring ship stability and dynamic behavior. It does not extend to inclinometers used for unrelated purposes, such as cargo status monitoring.

Key Topics

• Performance Requirements: Defines functionality, minimum measurement ranges, and accuracy criteria for heel angle, roll amplitude, and roll period.
• Display Specifications: Outlines requirements for both analogue and digital displays, including the minimum resolution and integration into bridge systems in accordance with relevant IMO and IEC standards.
• Alert Management: Establishes protocols for general, operational, and functional alerts in line with bridge alert management (BAM) principles, ensuring effective communication of status and alarms.
• Digital Interface and Connectivity: Requires standardized digital interfaces (IEC 61162 series) for transmitting critical measurement data, ensuring compatibility with voyage data recorders (VDR) and other navigation systems.
• Power Supply and Redundancy: Specifies the necessity for both main and emergency power sources, and mandates alert generation in the event of power supply issues.
• Testing Methods: Details the test conditions and acceptance criteria to verify compliance, including static and dynamic angle measurements, display validation, alert response, and interface testing.

Applications

Implementing ISO 19697:2026 ensures that electronic inclinometers used on ships meet internationally recognized standards, enhancing navigational safety, vessel stability assessment, and operational efficiency. Key applications include:

• Bridge Navigation Systems: Integration into navigation displays and alert systems on vessel bridges to provide real-time data on heel angle, roll amplitude, and roll period.
• Safety Monitoring: Continuous assessment of a vessel's rolling motion to help crews avoid hazardous situations and support maritime casualty investigations.
• Voyage Data Recording: Transmission of instant heel angle and motion data to VDRs for compliance and post-incident analysis.
• Compliance with Maritime Regulations: Assists shipbuilders, equipment manufacturers, and fleet operators in meeting IMO and IEC requirements for bridge instrumentation and alert management.
• Fleet Upgrades and Retrofits: Supports modernization projects by ensuring new or upgraded electronic inclinometers are fully compatible with bridge alert systems and external recorders.

Related Standards

ISO 19697:2026 references and aligns with several key international guidelines and standards for marine technology, including:

• IMO Resolution MSC.363 (92) – Performance standards for electronic inclinometers.
• IMO Resolution A.694 (17) – General requirements for shipborne radio equipment.
• IMO Resolution MSC.191(79) & MSC.466(101) – Presentation of navigation-related information.
• IMO Resolution MSC.302(87) – Performance standards for bridge alert management.
• IEC 61162 series – Maritime navigation equipment digital interfaces (including the HRM sentence for data exchange).
• IEC 62288 – Requirements for the presentation of navigation information on shipborne displays.
• IEC 62923-1 & 62923-2 – Bridge alert management: operational, performance, and alert classification requirements.

By adhering to ISO 19697:2026, maritime stakeholders ensure consistent, reliable, and interoperable operation of electronic inclinometers, reinforcing safety and performance standards in the international shipping industry.