Rolls-Royce Commercial Marine has been awarded a contract to install its ‘next generation’ Energy Management System across nine vessels in the Havila Shipping fleet.
The vessels include: four anchor handling tug supply (AHTS) ships, four platform supply vessels (PSV) and one rescue and recovery vessel (RRV).
Kristian Kleiveland, Rolls-Royce Sales Manager – Ship Intelligence, said: ‘Havila selected the Rolls-Royce EMS because of its ease-of-use and proven ability to optimise vessel operations. This was a key specification as the shipowner required a system that simplified the tracking of its vessels’ fuel consumption while not adding to the already high workload for its personnel.’
According to Rolls-Royce, the EMS enables a ship’s crew to see in real-time the effect that running machinery has on fuel consumption in order to make the necessary operational changes to reduce the fuel requirement.
The system’s sensors assess fuel consumption against, amongst other things, vessel speed, electrical load and the relationship between propeller pitch and RPM. Existing dynamic positioning (DP) sensors are also used to calculate the external forces – wind speed and wave force – acting on the vessel. It also shows how the vessel’s operational parameters are influencing fuel consumption.
The data collected from the sensors is then available onboard and is securely encrypted and processed. The required reporting data is transmitted via link on to a secure Rolls-Royce-hosted web portal, where more detailed historical analysis and comparisons can be carried out.
‘All the data can be accessed by ship management teams shoreside, so they can see what changes were made and how they directly affected fuel consumption. Ship managers can also use the information to compare the performance of different crews and all the vessels in a fleet,’ said Kleiveland.
Rolls-Royce said that while it is too early to evaluate the operational and performance data for the first Havila ship, some EMS customers have reported annual fuel savings of up to 20%.