Yes that's correct. It corresponds to the timetable on here: www.aliscafi.it/show_aliscafi_localita.asp as regards "Linee Marittime Partenope - the group to which Alilauro belongs (see http://www.inaples.it/ita/dettaglio.asp?idp=4639&cod=89&om=3) - which is also GESCAB: http://www.consorziolmp.it/
You can also see on there departures by Navigazione Libera del Golfo, at 09:05 and 12:35 - but if you notice, none of the days of the week for those services are checked. And their own website gives only the GESCAB/Alilauro services for Napoli to Sorrento: http://www.navlib.it/ita/linee/index.asp
-:- Message from TripAdvisor staff -:-
This topic has been closed to new posts due to inactivity. We hope you'll join the conversation by posting to an open topic or starting a new one.
To review the TripAdvisor Forums Posting Guidelines, please follow this link: http://www.tripadvisor.com/pages/forums_posting_guidelines.html
We remove posts that do not follow our posting guidelines, and we reserve the right to remove any post for any reason.