Claim: Yugoslav minelayer Zmaj is a seaplane tender (a ship that supports operation of seaplanes) owned and launched by the Kingdom of Yugoslavia in 1929.
Evidence: A seaplane tender is a boat or ship that supports the operation of seaplanes. The Yugoslav minelayer Zmaj (Dragon) was built in Germany as a seaplane tender for the Royal Yugoslav Navy in 1928–1930. 22 June 1929 Launched: The Royal Navy (Serbo-Croatian Latin: Kraljevska mornarica; Serbo-Croatian Cyrillic: Краљевска морнарица; КМ), commonly the Royal Yugoslav Navy, was the naval warfare service branch of the Kingdom of Yugoslavia (originally called the Kingdom of Serbs, Croats and Slovenes).