The Commission shall set charges for pilotage services on a published tariff basis to be reviewed and revised annually as necessary. The initial publication of rates and subsequent revisions shall be preceded by public notice at least 30 days prior to publication. The rates may be based on the method chosen by the Commission and may be varied on a geographic or other basis which the Commission deems appropriate. In establishing pilotage rates the Commission shall consider but not be limited to factors such as vessels' lengths, vessels' drafts, general design of vessels, distances for which pilotage services are to be provided, nature of waters to be traversed and the rates for comparable pilotage services in other ports. (1981, c. 910, s. 1.)