Shaft monitoring derives torque, speed or power from the fitted sensor and calculation arrangement. Correct shaft data and calibration are important when measurements support performance analysis or an approved limiting system.
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.
- Torque-sensor installation and zero reference.
- Shaft speed and direction input.
- Configured geometry and units.
- Data quality and trend comparison.
What must be distinguished before testing?
A measured shaft-power value is not automatically a certified fuel-consumption or emissions measurement. Confirm the intended use and calibration basis.
Why can shaft power be wrong when shaft speed looks correct?
Power calculations depend on the torque input as well as speed. Identify both measurement paths, sensor references and configured units. A plausible RPM value cannot validate the torque channel or the calculated power result.
Details that help assess this equipment
- Torque-meter and speed-sensor model.
- Shaft identification and configuration data.
- Power, torque and RPM recorded together.
Equipment references and their scope
- VAF: T-Sense torque measurement — Shaft torque/speed measurement and calculated power.
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: Bunker Monitoring Systems · Vessel Fuel and Energy Performance Monitoring
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 shaft power and torque monitoring 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.
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.