The Baltic Sea Region is extremely dependent of efficient transport solutions all year around. Currently there is a need to improve maritime transport and its integration in the logistic chain between Finland and Sweden, in order to optimize the flow of goods both by sea and connecting transport modes in the hinterland. The Baltic Sea is designated by IMO as a Particular Sensitive Sea Area, why all actions to reduce bunker consumption and emissions are of utmost importance. Today, the management of the vessel traffic in the fairways of the area is currently done mainly by voice communication. This increases the risk for misunderstandings, can result in longer lead times, inefficiencies and an unnecessary administrative burden. Automated information exchange between ship-ship and ship-shore centres can ensure efficient traffic flow and enhance the safety of vessel traffic. The overall objective of the EfficientFlow project was to improve the flow of goods and passengers through the two corridors of Gävle-Rauma and Stockholm-Turku in Baltic Sea Region by implementation of Sea Traffic Management concept. The project consisted from 2 work packages (WP). WP1 related to “Port flow optimisation” and developed Port Activity Application for improved data exchange within the port and between ships and ports in Gävle-Rauma corridor. WP2 related to “Ship flow optimisation” and developed the EF Tool and Efficient Flow Hub Service for improved route exchange process in a real time between ship-ship and ship-ports. The scope and purpose of the final D.T2.12 document is to collect and analyse information from main deliverables what have been created and reported during EfficientFlow project under WPT2 "Ship flow optimisation" in corridor Stockholm-Turku, duration from 2018 to 2021.