Advancements in connected and maritime vehicles are severely constrained by the limitations of existing communication methodologies and data exchange information. Therefore, the goal is to improve data quality, interconnectivity and interoperability between assets in the maritime and inland waterway environment. This will be achieved by allowing secure and verified direct and indirect communication between assets. The exchanged data information will be extended with additional sensor information to efficiently represent and communicate shared situational awareness. This sensor data extension, representation and communication is a crucial step towards efficient and flexible interoperability.