International shipping is responsible for around 3% of global anthropogenic greenhouse gas emissions. In order to follow the well below 2-degree temperature goal set out in the Paris Climate Agreement, international shipping must find a solution for decarbonisation in the coming decade, to enable ships that are built in the near future to sail with net-zero emissions around 2050. EU Horizon 2020-funded Project CHEK demonstrates two first-of-a-kind vessel concept designs, based on real operational profiles, to reduce greenhouse gas emissions by 99%, achieve at least 50% energy savings and reduce black carbon emissions by over 95%. This paper focusses on one of the demonstrator vessels, a Kamsarmax bulk carrier. The preliminary results in terms of greenhouse gas emission reductions and energy savings achieved by the combination technologies are presented herein. The technologies comprise wing sails, hull air lubrication, ultrasound anti-fouling technology, route optimisation, gate rudder, flexible drive train using liquid biogas engines with waste-heat recovery in combination with a controllable pitch propeller. Preliminary results show that almost complete decarbonisation is possible, with upcoming full-scale tests and verifications currently in progress during the second half of 2023. The findings of this work build the foundations for the development of the Future Proof Vessel Design platform, a digital tool for design of vessel and operations.