The naval Battle Hostile_encounter of the Counts took place Process_start on 23 June 1287 at Naples , Italy , when an Aragonese-Sicilian galley fleet commanded Control by Roger of Lauria defeated Hostile_encounter a large combined Cause_to_amalgamate Angevin ( Apulian and Principatan ) galley fleet commanded Control respectively by Reynald III Quarrel of Avella and Narjot de Toucy .

Lauria had taken Action his fleet to Augusta , eastern Sicily , after a report Reporting of an Angevin galley fleet landing Motion invasion troops there .

However , the invasion was a decoy and the Angevin galleys had sailed Motion around the south of Sicily and linked Connect up with their allies , forming Coming_to_be a fleet about twice the size of Lauria 's .

Lauria searched Scouring for the allied fleet and finally found Know it at Naples .

Lauria had around 40-45 galleys .

The naval Battle Hostile_encounter of Les Formigues ( Catalan ) took place Process_start probably in the early morning of 4 September 1285 near Les Formigues Islands , Catalonia , about 85 km northeast of Barcelona , when a Catalan-Sicilian galley fleet commanded Control by Roger of Lauria defeated Conquering a French and Genoese galley fleet commanded Control by Guilhem de Lodeva , Henry di Mari , and John de Orrea .

Either Lauria or the French were ashore for the night and encountered Hostile_encounter by the other , or they were both at sea when the encounter Hostile_encounter took place Process_start .

The accounts Statement agree that it happened Presence at night , which was unusual for medieval naval battles , but suited Lauria who was skilled at night-fighting .

The prisoners brought Bringing one message from Roger of Lauria to the King of France : that not even fish would be able to navigate Self_motion safely through Mediterranean Sea without a shield or sign Sign_agreement of the king of Aragon on them .