There was probably a landing place on Ringsu Cape in 1949. Ruhnu port building has visitor’s toilets, showers and a sauna. Vessels can be registered into the port in the same building. The other services offered by the port include supplying vessels with electricity and technical water and waste collection on the quay. The port can receive vessels whose lengths does not exceed 20 m and draught 2.5 m. There are 20 quay places in total. The radio call sign is ULL channel 16, "Ruhnu Harbour".