No rate or charge may be applied against any vessel, owner, or Master thereof by a United States Registered Pilot that differs from the rates and charges set forth in this part, nor may any rates or charges be made for services performed by a United States Registered Pilot, or for support services directly related to the provision of pilotage that a United States Registered Pilot requires a vessel to utilize, other than those for which a rate is prescribed in this part, without the approval of the Director.