The commission may suspend any pilot for any period that it may deem proper, and may revoke and annul any pilot’s license which shall be issued under this chapter, upon satisfactory proof that:
(1) The pilot has willfully disobeyed or violated the provisions of this chapter or any rule or regulation made and established by the commission; or
(2) The pilot has negligently lost or damaged any vessel under his or her care; or
(3) The pilot is so addicted to the habits of intoxication, or the use of any drug, as to be unfit to be entrusted with the charge of a vessel; or
(4) The pilot is so mentally or physically incapable as to be unfit to carry on the duties of a pilot.