First Cat Marine Hybrid Thruster Delivers More Power Using Less Fuel
Caterpillar Marine is pleased to announce that engineering specialists at its new Marine Solutions Center are this month overseeing delivery of the first Cat Marine Hybrid Thruster system. The first system is being delivered to an undisclosed ship yard in Singapore and will be commissioned mid this year.
The new propulsion set-up outperforms diesel mechanical systems in all partial load conditions, and offers improved fuel economy and substantial through-life savings for a variety of offshore support vessels (OSV). For vessels spending a high amount of time in standby or DP service, the annual fuel savings can be as high as 35%.
The performance achievements are the result of Caterpillar’s approach to optimising vessel operations and reducing total cost of ownership for owners. Typically, the Cat Marine Hybrid Thruster system could be used to downsize a vessel’s main engine so that engine load is optimised, while also allowing the vessel to switch to diesel electric mode for low DP operations or in standby.
Caterpillar Marine believes that the Cat Marine Hybrid Thruster represents a significant new market contender, either for retrofit or installation at newbuild stage. In transit operations and in diesel-mechanical mode, the smaller engines run at higher loads, consuming less fuel. In low-speed transit, either one or two gensets can power the main azimuth thruster in diesel-electric mode giving typical fuel savings of 10-15% at speeds in the 7-9 knots range, depending on hull profile. However, the biggest savings are made during standby and DP operations where the vessel would operate in diesel electric mode with the main azimuth propellers running in the most efficient variable speed mode.
Commenting on the development, Jonas Granath, Manager Electrical Design, Caterpillar Marine Solution Center said, “The efficiency gains are remarkable. Of course, they differ from ship to ship depending on the ship service and OSVs come in a wide range of types and sizes. Typically, though, OSVs with DP capability spend a considerable amount of time in standby or in various levels of DP. With this new system, they will be able to use the diesel electric mode and run off the smaller gensets with the propellers operating economically at a very low rpm. It is in exactly these conditions where our new Marine Hybrid Thruster system offers the greatest benefits.”
“We see significant market potential for the new set-up on board both existing and new ships to meet the increasing need for operational efficiency and reduced operating costs,” Jonas Nyberg, Regional Sales Manager South East Asia added.