A green dot means that the important documents are on file with the terminal. This is one of the requirements for being able to pick up a shipment. You can safely assume that, if the ferry arrived on schedule, it is now possible to pick up your shipment.
In the future, we plan to add information that will provide you with insight into whether the shipment is on file with Customs, and whether the shipment or corresponding transport unit has been unloaded/discharged.