Treaty of Neuilly-sur-Seine
In 1929, the status of the Marine Engineering School was set out in a special law and it was renamed Maritime School. Two years later a Seagoing Department was created, which was tasked with training watch officers for the merchant marine. The officers of the Maritime Police Service were trained partly in the Maritime School in Varna and graduated from the Military School in Sofia. The college in Sofia, which later became a tertiary institution in 1923, issued their diplomas insofar as an officer needs to have college education and under the terms of the Treaty of Neuilly-sur-Seine Bulgaria was allowed to have only one military college.