Canevaro was appointed with a considerable majority of votes in the election to the Doge's office of 20 February 1742, the one hundred and eleventh in biennial succession and the one hundred and fifty-sixth in republican history.

As doge he was also invested with the related biennial office of king of Corsica.

At his coronation in the Cathedral of San Lorenzo, on 7 July 1742, the ceremony was officiated by Monsignor Agostino Saluzzo, bishop of the Diocese of Mariana and Accia.

At the end of the two-year period on 20 February 1744, the former doge retired to private life.

Newly elected deputy for maritime affairs, he died in Genoa on 15 February 1745.