Work crews have set sail for Naval Point to relevel parking areas, fill in potholes and improve drainage in preparation for the busy boating season.
The popular public slipway in Lyttelton will also benefit from tree pruning and site maintenance work, as well as improved line marking and signage.
The six-week programme of work will boost waterfront access for boaties and pedestrians alike, supporting a range of summer activities.
Contractors using the eastern section of the site, near the Coastguard building, are expected to finish their weekday work by Christmas.
The targeted maintenance and improvement programme is not part of the Naval Point Development Plan and will not affect future planning and site development.
The development plan has yet to go out for public consultation.