Marine Calibration

GNW is an expert and experienced marine calibration service provider with years of support in the maritime industry. Get in touch today!

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As part of our on-site calibration services, our experienced technicians provide a wide range of marine calibration services to keep all your essential maritime equipment in perfect working order. Regular calibration in the marine industry can be the difference between safe, reliable and efficient equipment and potential safety hazards or catastrophic events. Thankfully, marine calibration can be plain sailing when you’ve got GNW Instrumentation by your side.

Here at GNW Instrumentation, we are a family-owned business with more than 40 years of experience of providing first-class in-house and on-site calibration services. Over the years, we have built an enviable reputation for the excellence of our marine calibration services, and have worked with many customers across the marine industry, including James Fisher and Survitec. Contact us today to take advantage of our marine calibration service.

Benefits of Marine Calibration

Our highly experienced technicians can perform onboard calibration services to ensure your essential safety, navigational and operational equipment is calibrated to traceable national standards. The benefit of working with GNW for all your marine calibration needs is that we can provide efficient on-site calibrations aboard your vessel or via our dedicated laboratory where necessary, to minimise any downtime or delays to your operations.

Calibration Services We Provide

GNW Instrumentation provides calibration services for a wide range of equipment, including (but not limited to):

  • Gas pressure gauges
  • Analysers
  • Sonar systems
  • Radar sensors
  • Flow Meters
  • Oil Water Separators (OWS)
  • Oil Discharge Monitoring Equipment (ODME)
  • Sampling pumps and systems


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Involves inspecting and servicing maritime devices to ensure they are working within the correct tolerances. In often hazardous maritime environments, it is even more important than normal to ensure that all essential devices and equipment are working properly to maintain safety, productivity and profitability.