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Shipboard speed log maintenance

Posted on by seanavin

Shipboard Speed Log Maintenance is essential to ensure precise vessel speed measurement, which is critical for fuel management, navigation accuracy, and regulatory compliance. At SEANAV, we specialize in maintaining both electromagnetic and Doppler speed log systems for all types of ships operating in coastal and international waters.

Why Maintain a Shipboard Speed Log?

The speed log system provides real-time information about a vessel’s speed through water (STW) and speed over ground (SOG). Errors or failures in the speed log can impact route planning, autopilot performance, and ECDIS integration. Timely maintenance helps preserve system reliability, extend equipment lifespan, and reduce downtime caused by faulty readings.

Types of Speed Logs SEANAV Maintains

  • Electromagnetic speed logs – commonly used on merchant vessels and tugboats.
  • Doppler speed logs – used on larger vessels and for more accurate dual-axis measurements.
  • Hybrid systems – integrated with GPS and gyrocompass for advanced data processing.

Our Shipboard Speed Log Maintenance Services

  • Sensor cleaning and inspection
  • Transducer calibration and testing
  • Display unit diagnostics
  • Cable continuity and power checks
  • Software updates and log-to-bridge integration

11 FAQs – Shipboard Speed Log Maintenance

1. How often should a speed log be maintained?
Every 6 to 12 months depending on operating conditions and manufacturer guidelines.

2. What are signs of speed log failure?
Inaccurate speed display, loss of signal, or inconsistent data with ECDIS/radar.

3. Does SEANAV service all speed log brands?
Yes, we support brands like Furuno, JRC, Raytheon, and more.

4. Can marine growth affect the log?
Yes, fouling on sensors or hull can distort readings. Cleaning is essential.

5. Do you provide onboard servicing?
Yes, our technicians travel to ports across India and internationally.

6. Do I need to dry-dock for maintenance?
Not always. Many checks can be done while afloat, depending on the issue.

7. Can you recalibrate the system?
Yes, SEANAV performs complete recalibration of Doppler and EM logs.

8. How long does the servicing take?
Typically 3 to 5 hours depending on system access and faults.

9. What are the benefits of preventive maintenance?
Improved navigation, compliance with SOLAS, and better fuel tracking.

10. Do you issue service reports?
Yes, our reports include test results, work done, and future recommendations.

11. Can faulty speed logs affect engine efficiency?
Yes, inaccurate data may lead to incorrect engine load and higher fuel use.

Why Choose SEANAV for Speed Log Maintenance?

SEANAV’s skilled team ensures your ship’s speed log system functions accurately under all conditions. With expertise in fault diagnosis, sensor calibration, and performance optimization, we keep your vessel compliant and efficient. Trust SEANAV to safeguard your vessel’s speed measurement systems with professional care.

Shipboard Speed Log Maintenance by SEANAV
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