SCADA provides supervisory displays, trends, alarms and selected commands for connected control equipment. The PLC or dedicated controller may continue performing process control when a supervisory station fails.
Seanav Marine provides independent service assessment. Send the equipment identity, symptoms and attendance window so the required capability, parts and any manufacturer involvement can be confirmed.
What should the service assessment check?
The following items define a starting scope for a competent service assessment. The actual test method and acceptance criteria must come from the installed equipment documentation and the agreed job scope.
- Server and client availability.
- Historian, alarm and time records.
- Tag quality and communication status.
- Application backup and access permissions.
What must be distinguished before testing?
A SCADA upgrade must preserve supported controller interfaces. Do not assume a general-purpose workstation can replace an approved marine operator station without review.
Why can SCADA show current values but lose alarm history?
Live communication, alarm processing and historian storage are separate services. Identify which part failed and preserve logs before restarting software. Time synchronization and configured retention are important when comparing records across operator stations.
Details that help assess this equipment
- Server/client and software versions.
- Alarm/historian fault logs.
- Time settings, retention and backup arrangements.
Equipment references and their scope
- Siemens: marine automation portfolio — Marine PLC, operator-interface and engineering product context.
- Yokogawa: paperless recorders — Acquisition, display and storage of recorded measurement data.
These references explain equipment or system examples. They do not establish the fitted configuration, SEANAV manufacturer authorization or a vessel’s acceptance limits. Use the installed model’s documentation for the actual work.
Related equipment guidance: Data Loggers and Trend Recorders · Marine Control Consoles · Automation Control Panels
How service is planned
Agree the affected machinery, safe isolation, operational restrictions and equipment-specific test plan with the vessel. Preserve as-found settings and available configuration backups. Confirm proposed changes and compatible replacements before work.
Record the completed work, functional-test results, outstanding defects and operating limits. Changes affecting approved functions need the appropriate maker, owner or approval-body review.
Maintenance, survey and documentation
Maintenance intervals and calibration methods depend on the manufacturer’s instructions, service conditions and vessel PMS. There is no blanket annual calibration or five-year overhaul rule for every automation component. Statutory and Class survey requirements must be established for the particular vessel and equipment.
A service report records the work performed and observed results. It does not by itself issue or renew a ship’s statutory certificate. Manufacturer authorization, specialist calibration and survey witnessing must be confirmed where required; Seanav Marine’s independent service role does not imply direct OEM agency or universal Class approval.
Request marine scada systems support
Send the vessel name and IMO number, port, ETA/ETD, equipment maker and model, fault description, alarm screenshots and relevant drawings or logs. State whether the request involves routine maintenance, a defect, replacement, retrofit or an upcoming survey. Attendance depends on access, engineer availability, parts and the confirmed scope.
service@seanav.org · +971 58 568 1197 · Contact the operations desk
Reference framework
These sources explain the relevant system or regulatory context. They do not replace the installed equipment manual or prove the applicability of a particular rule to every vessel.
- IMO: SOLAS convention and chapter scope
- IACS: UR E22 computer-based systems
- Kongsberg: vessel automation architecture
About this guide
Published by Seanav Marine. Editorial and source review: , AI-assisted. This general service guide is based on the references shown; it is not a signed vessel-specific engineering procedure. Equipment manuals and the responsible technical personnel determine the job requirements.
For technical assessment or a factual correction, contact Seanav Marine with the equipment identity and supporting documents.