Marlborough District Council exercises authority over harbour waters through powers vested in it by the Local Government Act and Maritime Transport Act. This includes the powers to make bylaws relevant to safety and navigation.
The 2009 Navigation Safety Bylaws are presently in force. New navigation safety bylaws are expected to be proposed in early 2019.
The Harbourmaster is empowered under the Maritime Transport Act 1994 to issue directions to ships and vessels. Directions presently in force will be listed here.
National rules and acts apply to shipping and boating in the region. Some of the most pertinent are listed here however, this list is not exhaustive.