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Eniram launches Optimum Speed system

Eniram has launched its new Optimum Speed Assistant (OSA), an onboard decision support tool used to determine a vessel's optimum speed profile for each voyage.

The software builds on Eniram’s existing Dynamic Trimming Assistant program, which uses real time data to assist operators in optimising vessel trim.

The company says that the application's ability to combine real-time information about prevailing sea conditions with historical data in determining the optimum speed profile should reduce the need for a crew to build in ‘buffer’ time and vary engine speed to ensure on-time arrival in port, a practice which is not fuel efficient.

Calculations are displayed via a dashboard with a colour-coded ‘traffic light’ system.

OSA was developed and tested in cooperation with Eniram's cruise customers, and draws on data collected from 100 vessels, with 200 billion signals collected and analysed from over 60,000 sea days.

The results of these tests showed that there was the potential for a vessel to make a 2 per cent saving on fuel by adjusting speed alone. Eniram says that, by adding propulsion and trim adjustments, operators could expect to achieve annual fuel-related savings of 3 per cent.

“Optimum Speed Assistant shows quick gains in efficiency,” says Eniram CTO, Henrik Dahl.

“For a typical vessel such as a cruise liner, payback time is significantly less than a year. We see that our Optimum Speed Assistant together with Dynamic Trim Assistant will be key elements of any vessel’s energy efficiency plan (SEEMP).

These tools, coupled with Eniram Performance Management, will guide our customers to achieve best performance and reporting of emissions and follow up of EEOI.”

“It is not enough simply to optimise the engine loads for each engine, as the ship ends up consuming more energy. Obtaining the best efficiency on a passenger vessel usually means operating at constant speed and using the engines at less optimal loads than those for which they are designed.”

Eniram says it will also release an Engine Optimisation product towards the end of this year.

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