Kammala wannan jumla: An ce koma bayan ya fara ne a ranar 6 ga Agusta, 1284, lokacin da dakarun jiragen ruwa na Pisa da suka fi yawa, a karkashin umarnin Albertino Morosini, suka ci nasara da kyawawan dabarun jiragen ruwa na Genoese, a karkashin umarnin Benedetto Zaccaria da Oberto Doria, a cikin wasan kwaikwayo na jirgin ruwa
Yaƙin Meloria. Wannan shan kashi ya kawo karshen ikon ruwan Pisa kuma garin bai sake farfadowa ba; a cikin 1290, Genoese ya lalata Porto Pisano (tashar jiragen ruwa ta Pisa) har abada, kuma ya rufe ƙasar da gishiri. Yankin da ke kusa da Pisa bai ba da izinin birni ya dawo daga asarar dubban ma'aikatan jirgin ruwa daga Meloria ba, yayin da Liguria ta ba da tabbacin isassun ma'aikatan jirgin ruwa zuwa Genoa. An ci gaba da sayar da kayayyaki, ko da yake an rage yawa, amma an daina sayar da kayayyaki sa'ad da kogin Arno ya soma juyawa, hakan ya hana jiragen ruwa zuwa tashar jiragen ruwa na birnin. Wataƙila cutar zazzaɓin cizon sauro ta yaɗu a yankin. Gaskiyar ƙarshen ta zo ne a 1324, lokacin da Sardinia ta ɓace gaba ɗaya ga Aragonese.