Be sure your marine Fire Systems are Ready to Go! 

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Our comprehensive range of ultrasonic liquid level indicators are designed for testing contents of marine fixed firefighting systems such as CO2 systems. They provide:

  • reliability,
  • accuracy,
  • ease of use, and 
  • peace of mind: for crew and vessel

Our product range includes the Portamarine® and the Portalevel® MAX MARINE PLUS.

  • The Portamarine® is the ‘go-to’ choice for CO2 fire cylinder servicing for shipping companies.  Quick and easy with no need to weigh cylinders or dismantle systems. It is RINA Accepted.
  • The Portalevel® MAX MARINE PLUS is our advanced liquid level indicator with multiple calibration modes for challenging cylinders.  The intuitive screen display shows GAS or LIQUID. It is ABS Type Approved and RINA Accepted.

All our marine models comply IMO SOLAS FSS Code Chapter

We have models to cover all marine applications complying with IMO SOLAS FSS Code Chapter

  • Offshore Fire Suppression Servicing inspections and
  • Onboard CO2 fire suppression systems.

Choose 6-12 monthly regulatory compliance by inspecting your marine systems. Recommended for inspections of shipboard marine CO2 systems using level indicator.

Each unit has an extension rod, allowing you to easily check between the cylinder banks without having to remove any cylinders from the manifold.

Get in touch

You can reach us anytime via phone or email, we aim to respond to all enquiries within 24 hours (excluding weekends and bank holidays)


Come say hello at our Technical Laboratory.

Coltraco Ultrasonics
NETPark Research Institute
Joseph Swan Road
TS21 3FB

United Kingdom


Monday - Friday (excluding bank holidays) from 8:30am to 6:00pm, UK.

Tel (Sales & HQ): +44 20 7629 8475
Tel (Technical): +44 1740 618 240