(a) While an unlimited license is in effect, it authorizes the licensee to provide pilotage for vessels of any draft.
(b) (1) While a 40-foot-draft limited license is in effect, it authorizes the licensee to provide pilotage for vessels not exceeding 40-foot-draft.
(2) While a 36-foot-draft limited license is in effect, it authorizes the licensee to provide pilotage for vessels not exceeding 36-foot-draft.
(3) While a 32-foot-draft limited license is in effect, it authorizes the licensee to provide pilotage for vessels not exceeding 32-foot-draft.