Just north of Punta Libeccio, at about 100 m from the coast, a site known as the “Relitto dei Cannoni” (the “Wreckage of Cannons’’) can be found at a depth of 15 m. The gently sloping seabed, which is characterised by naturally split rocks alternating with clearings of sand and gravel, contains traces of an ancient shipwreck: eight cannons of uniform size and characteristics, six of which are lying in disarray along a vaguely rectilinear axis, while the other two are offset by about 20 m to the west. The total distance between the farthest cannons is about 30 m. 

The shipwreck site is located almost at the centre of Cala Tramontana. The dive begins over a seabed 12 m in depth, which gently slopes down to a sandy plateau at a depth of about 7 m, where the outline of the wreck can be seen in the distance. The stern of the steel Libyan vessel, which was sunk in 2001, lies at a depth of about 18 m. Layout of the wreck: the stern lies to the north-west and the bow lies to the south-east.