A method for providing data from the received AIS data packets (1, 2, 3, 4, 5, 6), wherein by means of at least one AIS receiving means (80) AIS data packets (1, 2, 3, 4, 5, 6) received and the data of the received AIS data packets (1, 2, 3, 4, 5, 6) are automatically evaluated, in which the values of some bits of a received AIS data packet (1, 2, 3, 4, 5, 6) based befindlicher of the access of the AIS-receiving means (80) auxiliary data (126) that do not originate from AIS data packets are determined or estimated, and based on this determined or estimated values of the data bits, such data of an AIS data packet (1, 2, 3, 4, 5, 6) that are in error can be reconstructed at least in part, characterized in that the AIS-receiving means (80) at least two operation states (110, 111) in which it is operated, alternatively, said operating states (110 , 111) comprise at least: a) a general knowledge of state (110), in which an evaluation of the received AIS data packets (1, 2, 3, 4, 5, 6) without taking into account stored data previously received AIS data packets (1, 2, 3, 4, 5, 6) takes place, and b) a Vorkenntniszustand (111), in which an evaluation of the received AIS data packets (1, 2, 3, 4, 5, 6), taking account of data stored as knowledge data previously received AIS data packets (1, 2, 3, 4 , 5, 6) is carried out to reconstruct erroneous data received AIS data packets on the basis of such knowledge (127) at least partially.
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