A vessel permit is not required in Glacier Bay when:

(a) A motor vessel is engaged in official, non-commercial business of the State or Federal Government;

(b) A motor vessel is operating in Bartlett Cove waters east of a line extending from the long axis of the fuel dock to the wilderness boundary of Lester Island;

(c) One motor vessel is launched from a motor vessel that has a permit and only while the authorized motor vessel remains at anchor or operated in accordance with a concession agreement from a permitted motor vessel while that vessel is not underway;

(d) A commercial fishing vessel authorized under this subpart is actually engaged in commercial fishing; or

(e) A vessel is granted safe harbor by the superintendent.