"Kapetanija" (Harbourmaster/Harbour Captain's) patrol vessel "RH 6 RK" (aka Burin II) in the port of Novi Vinodolski, Primorje-Gorski Kotar County ("Primorsko-goranska županija") [Rijeka], Croatia

Callsign: 9A3844
MMSI: 238540410

The prefix RH of the registration stands for "Republika Hrvatska" (Republic of Croatia) and indicates governmental duty boats; RK > Rijeka