46 CFR 401.401: Surcharges.

To facilitate safe, efficient, and reliable pilotage, and for good cause, the Director may authorize surcharges on any rate or charge authorized by this subpart. Surcharges must be proposed for prior public comment and may not be authorized for more than 1 year. Once the approved amount has been received, the pilot association is not authorized to collect any additional funds under the surcharge authority and must cease such collections for the remainder of that shipping season.