MANDATORY SHIP REPORTING SYSTEM
For more details on mandatory ship reporting systems (VTS Croatia) see Radiosluzba za pomorce.
SEA LEVEL OSCILLATION AND CURRENTS
Occasionally sudden oscilation of sea level occurs(seiche),when stronger currents of variable direction prevall (up to 1.2m/s),especially in the area of Vranjak shoal.

 
   Heights in meters              MHHW(SVVV)                  MHW(SVV)             MLW(SNV)             MLLW(SNNV)

DUBROVNIK  42°40'N 18°04'E          0.34		        0.30		    0.07		 0.05