Within the scope of the decarbonisation of the maritime transport in the North Sea (SECA-zone) and the shipping industry´s carbon footprint reduction, the refitting and the construction of hybrid vessels is a way to meet the concerned sustainability standards, provided that the energy needed for the hybrid engine is produced by renewable energy technologies.
The use of hybrid vessels is even more relevant as they are producing less pollution of the air and the water, and in that way, it needs more support than the construction of vessels, utilizing LNG engines or engines on methanol. Moreover, it is important that the offshore industry, which is an important sector in the North Sea, becomes more low carbon focused in order to produce clean energy and in a latter stage oil and gas.
Nevertheless, considering the limited seize of the vessels on the one hand and the actual stage of the technology for hybrid shipping that is permanently in evolution, on the other hand, there is still need for more knowledge of the use of hybrid engines on board of different types of vessels in order to realise the same or better output and production indicators than the traditional vessels, utilizing LNG or fuel engines.
Furthermore, as to the recharging of hybrid engines, it is important to optimize the available renewable energy in order to guarantee the cost-effective and low carbon operationability of the hybrid engines, as well to optimize the use of batteries for the same reason
Finally, considering the rapid evolution in the field of the construction and retrofitting of hybrid vessels, it is important that the same performance and safety indicators are guaranteed, so that it becomes a common practice to utilise hybrid vessels for certain maritime operations.