...
23.B.4. Ships of Norway under foreign flag. Regarding the issue ships of Norway under foreign flag, Statistics Norway used to depend on information (electronic data) from Lloyd’s Fairplay Register. However, this has been discontinued based on the consideration of the costs and benefits of subscribing to the monthly updates, which means that new effective sources are sought after. Equasis, a free source, might be used.[122] StatisticsNorway is also considering establishing a small annual survey of large shipping companies in order to obtain an alternative estimate of the magnitude of this activity. This work has not been yet concluded.
[122] http://www.equasis.org/