Law No. 23/2014 on Regional Administration grants the most management responsibility for maritime affairs to the provincial government, while the regency/city is only permitted to oversee catch fisheries and aquacultures. Similarly, in Banyuwangi Regency Government, which is the de facto coastal region with a strong potential for marine resources, East Java Provincial Government is delegated power over maritime matters. In practice, however, there are various issues, including a lack of support with fishing gear for locals. This study sought to investigate and assess the transfer of maritime management authority from the Banyuwangi Regency Government to the East Java Provincial Government. Observation, interviews, and examination of pertinent documents were employed as data collection methods. The analysis utilized a two-pronged criterion for the distribution of government affairs: Efficiency value. Research revealed that the transfer of management authority for marine matters from the Banyuwangi Regency Government to the East Java Provincial Government had not resolved the fisheries and navigational problems in Banyuwangi. It is proposed that a portion of the management of marine affairs be given to the Banyuwangi Regency Government and the East Java Provincial Government.