JAN-901B
JRC JAN-901B is a Electronic Chart Display and Information System listed in the supplied equipment record. It is normally installed on the bridge navigation console with interfaces to GNSS, heading, speed, AIS and other bridge sensors. Its primary purpose is to support route planning, route monitoring and display of official electronic navigational chart information. Unlike radar, ECDIS is primarily a chart- and sensor-integration system and depends on valid chart data, software, sensor inputs and approved backup arrangements. The model designation identifies a particular manufacturer configuration, but the supplied record does not define every hardware, material, control, or certification difference to adjacent models. For exact ratings, dimensions, settings, materials, connection details, and variant-specific limits, refer to the manufacturer documentation for the exact figure.
Components & Design
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Technical Data
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Common failures & inspection points
Service & Maintenance
Check chart update status, permits, sensor inputs, route-monitoring alarms, backup arrangements and system health. Verify time, position and heading against independent bridge sources. Review alarm history and test backup transition under approved procedures. Software, chart and configuration changes must follow the vessel's controlled navigation procedures.
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