000007669 001__ 7669 000007669 005__ 20240531164759.0 000007669 02470 $$2doi$$a10.24868/issn.2515-818X.2020.027 000007669 035__ $$a4486677 000007669 037__ $$aGENERAL 000007669 245__ $$aThe maritime energy transition from a shipbuilder's perspective 000007669 269__ $$a2020-10-05 000007669 336__ $$aConference Proceedings 000007669 520__ $$aThe maritime sector has thrived on using fossil hydrocarbon fuels, such as heavy fuel oil (HFO) and marine diesel oil (MDO). These fuels allowed vessels to carry large amounts of cargo over large distances, due to their high energy density. However, the climate objectives of the Paris agreement and the ever-tightening legislation regarding harmful emissions, such as nitrogen oxides (NOX), sulphur oxides (SOX) and particulate matter (PM) require the phasing out of fossil fuels. The production of a renewable replacement for diesel is costly and requires a source of carbon. Therefore, renewable alternatives are most likely less energy dense than the diesel that is currently used. The transition to non-fossil energy carriers will thus be challenging for vessels that have a high power density, require a large autonomy, operate globally and/or have a challenging fuel logistics. This paper presents a pathway to a carbon neutral maritime sector with nearly no harmful emissions. This transition calls for the development and implementation of clean and efficient energy conversion technologies on board vessels. In addition, efficient and cost effective production of alternative fuels is required, as well as the development of an adequate bunker infrastructure. Government policies to subsidise clean solutions and, if needed, tax emissions, need to be put in place to support these developments. These actions are preferably taken sooner rather than later, since vessels have a relatively long service life and, subsequently, a slow replacement rate. Alternative energy carriers and drive system technologies are assessed based on their technology readiness and environmental impact. Each alternative is judged based on the total costs of ownership, as there is a trade-off between the technical developments, emission legislation, investment and the operational costs. The effect of government policy on the viability of the alternatives is also demonstrated. 000007669 542__ $$fCC-BY-4.0 000007669 6531_ $$aEnergy transition 000007669 6531_ $$aAlternative fuels 000007669 6531_ $$aZero emission vessels 000007669 6531_ $$aClean technologies 000007669 6531_ $$aLife cycle performance assessment 000007669 7001_ $$aMestemaker, BTW$$uRoyal IHC, The Netherlands 000007669 7001_ $$avan Biert, L$$uDelft University of Technology, The Netherlands 000007669 7001_ $$aVisser, K$$uDelft University of Technology, The Netherlands 000007669 773__ $$tConference Proceedings of INEC 000007669 773__ $$jINEC 2020 000007669 789__ $$whttps://zenodo.org/record/4486677$$2URL$$eIsIdenticalTo 000007669 85641 $$uhttps://www.imarest.org/events/inec-2020$$yConference website 000007669 8564_ $$991e4a29e-4220-4ebb-9dd4-4bf9477e6dfe$$s932805$$uhttps://library.imarest.org/record/7669/files/INEC_2020_Paper_39.pdf