By December 2023 all existing merchant, cruise and ferry vessels, above 400 GT* and which engage in international trade, must comply with the requirements of the IMO’s Energy Efficiency Existing Ship Index (EEXI), which defines a minimum energy
efficiency level for vessels.
*falling under MARPOL Annex VI
The Wärtsilä 4-stroke Engine Power Limitation is an upgrade package for vessels with a single main engine per shaft-line with a fixed pitch propeller (FFP) but without PTO/PTI, which will enable compliance with the new requirements. The solution can be installed as an add-on to Wärtsilä 4-stroke engines and has been designed in collaboration with one of the major classification societies.