No idea. But it is quite similar to how public transport works for archipelago ferries in Scandinavia.

15 year contracts when large investments are required. Otherwise 5-10 years.

And you get a ”quota” for a guaranteed traffic to run for that period based on the requirements in the contract.

Just took the same idea and applied to fishing, to prevent the ”legacies” from monopolizing it while giving the public the income of their shared resources.