Port-due on vessels not discharging or taking in cargo When a vessel enters a port subject to this Act. but does not
with the exception of such unshipment and reshipment as may be necessary for purposes of repair), she shall be charged with a port-due at a rate to be determined by the 3 (a) [a] Substituted for the words "Local Government" by A. 0., 1937 (1-4-1937). [ Government] and not exceeding half the rate with which she would otherwise be chargeable.