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– Just Add Water System

JAWS is a data-driven TRIM and DRAFT advisory digital application, available on Kongsberg Maritime’s Information Management System (K-IMS).


JAWS ensures that your vessel continues to sail with optimal trim and draft settings at all times, even after captain and crew changes. The JAWS application is a key enabler to help shipowners quickly reduce CO2 emissions, and one building block in helping shipowners meet the Carbon Intensity Index (CII) requirements.

The application is easy to install and doesn’t require any hull performance test data or any additional hardware. The technology behind JAWS has been developed, tested, and verified by Shell on operating vessels and undergone DNV’s technology qualification process.


  • Reduced fuel cost

    By optimizing trim and draft, savings in the range of 3-7% can be achieved

  • Reduced emissions

    Fuel savings directly result in CO2 reductions

  • Low implementation cost

    Only K-IMS, a maritime industry platform and data logger, is required for JAWS

Intuitive and user-friendly advice interface

The JAWS application is installed onboard the vessel. The user-friendly interface provides the crew with advice on optimal trim and draft settings in current, or planned, vessel conditions for various speed segments

Track JAWS performance

The onshore version of the JAWS application provides key KPI cards to track JAWS’ onboard usage, energy savings and vessel efficiency. The time and voyage selector enables operators to analyze and compare JAWS’ performance over time, e.g. before and after a crew change. To further analyze performance data,table and several graphs are made available along with a map to track voyages.

JAWS is a proven tool for fuel saving

The graph shows a vessel in operation with JAWS software. Bars indicate kWh savings in thousands. Over six months, this specific vessel has followed JAWS advice 38.4% of the time and saved 726 000 kWh – an average energy saving of 3.81% over a six-month period. JAWS savings are compared to the crew’s best practice trim and draft settings before JAWS deployment.

Services and support

  • 24/7 Technical support

    Our 24/7 technical support team is there to help at any time, day or night, wherever your vessel is.

  • Conversions, retrofit and refit

    We understand the importance of having the right parts, available in the right place, at the right time.

  • Training

    Ensure that your crew is properly and thoroughly trained. This will reduce operational risk, downtime and maximise return on asset investment.

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