ISO 22555:2022 PDF

Overview

ISO 22555:2022 sets out the construction and performance requirements for propeller pitch indicators used on ships and in marine technology. This international standard addresses the design, testing, and marking of propeller pitch indicator systems as required by SOLAS 1974, Regulation 19, Chapter V. Closely linked to IMO Resolution A.694(17) and IEC 60945, ISO 22555:2022 ensures that propeller pitch indicators provide reliable, precise feedback on the position of propeller blades, enhancing navigational safety and ship operation efficiency.

Key Topics

• Scope and Applicability

  • Defines requirements for propeller pitch indicators, covering both analogue and digital systems.
  • Applies to equipment mandated by SOLAS 1974 and related maritime safety conventions.

• Construction Requirements

  • Specifies robust enclosures, ease of maintenance, and proper earthing for indicator system components.
  • Sets standards for display type and configuration, ensuring clear readouts of pitch angle and direction.

• Performance Criteria

  • Outlines accuracy requirements for calibration and indicators.
  • Damping efficiency is measured, ensuring pointers reset promptly after actuation.
  • Details acceptable ranges for power supply fluctuations and insulation resistance.

• Testing and Verification

  • Dictates methods for environmental, calibration, damping, power supply, and alert function tests.
  • Compliance with referenced IEC standards for specific tests and interface protocols.

• Alerts and Safety

  • If equipped, alert capabilities must adhere to MSC.302(87) and IEC 62923-1/-2 for bridge alert management.

• Marking and Documentation

  • Requires units to be marked with manufacturer identification, model/type number, serial number, and safe compass distance.
  • Manufacturers must provide clear operational and maintenance documentation.

Applications

ISO 22555:2022 propeller pitch indicators are vital in ensuring navigational safety and precise ship maneuvering. Ships with controllable pitch propellers rely on these systems to display the current blade angle, supporting safe and efficient operation in both manual and automated bridge environments. Recognized as a critical component in marine navigation, these indicators:

• Enhance situational awareness for crew during docking, mooring, and transit.
• Support compliance with key maritime safety regulations.
• Aid in fault detection, troubleshooting, and preventive maintenance through accurate feedback.
• Facilitate integration with other navigation and control systems via prescribed digital interfaces.

Marine equipment manufacturers and shipbuilders use this standard to ensure their products meet the stringent requirements set by international maritime authorities. Operators and technical personnel reference ISO 22555:2022 when assessing equipment suitability for new ship builds or retrofits.

Related Standards

ISO 22555:2022 references and aligns with several important international standards and conventions, including:

• IEC 60945 - Marine navigation and radiocommunication equipment - General requirements, testing.
• IEC 62288 - Presentation of navigation-related information on shipborne navigational displays.
• IEC 61162 Series - Digital interfaces for marine navigation and radiocommunication.
• IEC 62923-1 and IEC 62923-2 - Bridge alert management requirements and features.
• IMO Resolution A.694(17) - General requirements for shipborne radio equipment and navigational aids.
• SOLAS 1974, Regulation 19, Chapter V - Mandatory carriage and performance requirements for navigation equipment.

For comprehensive marine safety and vessel operation, ISO 22555:2022 should be considered alongside these related standards, ensuring full regulatory compliance and seamless integration within the vessel’s navigational systems.