Bay of Plenty Regional harbourmaster Carl Magazinovic has resigned from the position, ahead of the busiest time of the year for the job.
A Bay of Plenty Regional Council spokeswoman confirmed Mr Magazinovic resigned to "pursue other employment opportunities".
The spokeswoman was unable to say when Mr Magazinovic handed in his resignation but it is understood his departure was effective immediately.
Former Western Australia harbourmaster John Fewings will be acting regional harbourmaster in Mr Magazinovic's absence.