From the sea one will immediately recognize Rab by its town walls and four bell towers. Approach is possible between Cape Frkanj, on which there is a red lighthouse (Fl G 2s 6m 4M) and Frkanj Shoal, which is marked by a green lighthouse on a concrete base (Fl G 2s 2m 4M). The latitude and longitude of Frkanj Shoal are 44°44,9' N 14°45,5' E. The shoal can be rounded from the southeast.

The entrance to the harbor is marked with a red lighthouse on Cape St. Ante (Fl R 1,5s 7m 3M) and a green lighthouse on Tunera Islet (Fl G 2s 14m 4M). Due to shallow spots around Tunera Islet, one should keep to the red lighthouse. ACI marina Rab is situated within the Rab harbor bay that lies in the southeast-nothwest direction. The marina is protected by a breakwater, the head of which is marked by a green lighthouse (Fl G 1,5s 7m 4M). During a strong southern wind it is not recommended to stay in the town harbor. Maximum speed in the approach channel is 3 knots for all vessels. The western ends of the piers in the marina are lighted.