Gonâve Island or Zil Lagonav is an island of Haiti located west-northwest of Port-au-Prince in the Gulf of Gonâve. It is the largest of the Hispan…Gonâve Island or Zil Lagonav is an island of Haiti located west-northwest of Port-au-Prince in the Gulf of Gonâve. It is the largest of the Hispaniolan satellite islands. The island is an arrondissement or Ouest-Insulaire in the Ouest and includes the communes of Anse-à-Galets and Pointe-à-Raquette.