Vessels may sail and stay in the coastal seas, rivers and lakes of the Republic of Croatia if they obtain authorization. Foreign sport rowing and sailing vessels up to 3 m length, and motor boats up to 3 m length with a motor up to 4 kW may sail and stay in coastal waters, rivers and lakes without authorization. 

If the owner or master of a foreign vessel wishes to sail and stay in coastal waters, rivers and lakes, after entering the coastal sea, river or lake he must take the shortest route to the nearest port or harbour open to international traffic, register his arrival with the authorized body in that harbour and apply for authorization to sail.

The owner of master of a foreign vessel who brings the vessel overland may register it in any port authority or harbour office. The master of a vessel must immediately after landing in a port or harbour register with the border police or the nearest police administration or station every person who is on the vessel without a valid passport.

The master of the vessel must not allow a person without a valid passport to disembark in the port or harbour without authorization of the border police. If the vessel stopped outside a border crossing due to higher forces, the master must immediately register the persons who disembarked and boarded with the nearest police administration or station. Crew members may not leave the area of the border crossing before submitting to the stipulated border control.