So let's open a thread for Hungary, which has a rich naval history despite having lost its Mediterranean coast following World War I.
I start with a memorial plaque - commemorating the construction of the first Danube steamship in 1817 -, found in Sellye (rural southern Hungary):
"CAROLINA - the first Danube steamship.
Constructed by Antal Bernhard in Sellye, 1817."
I start with a memorial plaque - commemorating the construction of the first Danube steamship in 1817 -, found in Sellye (rural southern Hungary):

"CAROLINA - the first Danube steamship.
Constructed by Antal Bernhard in Sellye, 1817."