After Cannai tower appears Cannai Bay (Porto Cannai). It is a set of three beautiful beaches. You can anchor, in about 4 m, in the W bay, well protected from the NW winds.
Just E Speone cape is a small cove where it is possible to anchor to W in about 5 m.The gusts of relapse Maestrale are strong.NW cove is a small jety for small local boats.
Sperone cape is a rock at the S extremity of Sant'Antioco island. It faces della Vacca and del Vitello islands, and farther, del Toro island.It is low and rocky, and dominated by the building of an ancient semaphore.
Cannai (or Canai) tower built in 1757, remained active until 1815. She had a supervisory role of information and communication to military units responsible for the defense of the island Sant Antioco.