Changes to engine rules

Learn about the Marine Protection Rules relating to engines for New Zealand commercial vessels and recreational boats that do not visit overseas ports.

These rules are part of New Zealand’s commitment to MARPOL Annex VI, an international agreement that aims to reduce air pollution from ships. Marine Protection Rules Part 199 applies to New Zealand commercial vessels and recreational boats.

As ship and boat owners, we all have a part to play in protecting our marine environment and helping to reduce the impact of climate change.

The key rules that affect commercial or recreational vessels are the rules for engines over 130 kW (174.3 HP). The engine rules reduce nitrogen oxides emissions, which are harmful to both people and the environment.

In general, engines installed before 19 May 2005 that have not been substantially modified, engines used solely for emergency purposes, or engines on boats that operate only in lakes or rivers, do not need to follow these rules.

For vessels or boats in the New Zealand fleet on 31 December 2022

Summary of engine requirements

Engines over 130kW installed between 19 May 2005 and 1 January 2023

Commercial vessels: these engines need to meet emissions limits and have the required documentation at the vessel’s next major survey on or after 1 January 2029 (and by 30 June 2032).Recreational boats: these engines need to meet emissions limits and have the required documentation by 30 June 2032.

Engines over 130kW installed on or after 1 January 2023

Commercial vessels and recreational boats need to meet emissions limits and have the required documentation for these engines from the date of install.(Commercial vessels will need to present the required documentation at the vessel’s next survey ).

Engines over 130kW installed before 19 May 2005

Commercial vessels and recreational boats are not required to meet emissions limits or have documentation for these engines.

These rules apply regardless of the size of the vessel or boat the engine is installed on.

There are different requirements for engines:

  • that undergo, or have undergone, a major conversion
  • on vessels or boats that voyage to overseas ports or waters outside New Zealand jurisdiction
  • on vessels or boats that enter the New Zealand fleet on or after 1 January 2023.

Where to find more information

For details of the emissions limits, what documentation you need, and more, see our:

Guide for small commercial vessels
PDF: 2.42 MB, 12 pages
View guide (opens in new tab)
Guide for recreational boats
PDF: 3.54 KB, 4 pages
View guide

There are also rules to prevent other types of air pollution from ships and reduce the carbon intensity of shipping. Information on these is available under Marine Protection Rules.