Marine pests and diseases introduced to New Zealand on vessel hulls (biofouling) are a threat to our marine environment and resources. All vessels arriving in New Zealand must provide evidence of biofouling management prior to arrival.
On this page:
- New Zealand's biofouling requirements
- Two vessel categories under the CRMS
- How to comply with requirements
- Non-compliant vessels
- Specific advice for your vessel type
- MPI can help you prepare
All vessels must provide evidence of biofouling management before they arrive in New Zealand.
The Craft Risk Management Standard (CRMS) for Biofouling outlines the requirements for international vessels.
More information on how to meet the requirements is available in our:
- Guidance document for the CRMS [PDF, 1.5 MB]
- Frequently asked questions about the CRMS [PDF, 1.8 MB]
Vessels are sorted into 2 different categories based on their intended stay in New Zealand.
- Short-stay vessels – those staying in New Zealand for less than 21 days, and only visiting approved places of first arrival.
- Long-stay vessels – those staying 21 days or longer, or visiting areas not approved as places of first arrival.
Most short-stay vessels are commercial vessels, including:
- container ships
- commercial cargo vessels.
Long-stay vessels often include:
- yachts and other recreational vessels
- cruise vessels
- work and project vessels
- research vessels
- defence vessels.
You'll be able to meet the biofouling requirements by doing one of the following (and having documentation to prove it):
- Undertaking continual hull maintenance using best practices (recommended for short-stay vessels).
- Cleaning the hull and niche areas within 30 days before arrival in New Zealand (recommended for long-stay vessels).
- Booking an appointment for the vessel to be hauled out and cleaned by an MPI-approved treatment supplier within 24 hours of arrival (recommended for vessels coming to New Zealand for refit or repair).
If your vessel can't meet the standard using one of these measures, you may develop a craft risk management plan that details alternate but equivalent measures to manage biofouling.
Providing evidence of compliance
Before you arrive, MPI will ask to see evidence that you've undertaken one of the 3 measures listed above. Evidence must be verifiable, and may include:
- your biofouling management plan and record book
- dates and reports of dry docking
- current antifouling certificates
- vessel operational history
- evidence of independent inspections and ongoing maintenance (such as cleaning or treatment) by suitably qualified people.
If you plan to submit a dive inspection report as evidence of hull maintenance, check MPI's guidelines for diving service providers (below). These outline what should be in a hull inspection report, and give examples of allowable biofouling (for short-stay vessels).
Continual maintenance using best practices
For short-stay vessels, the recommended option is to demonstrate continual hull maintenance using best practice. Best practice involves ongoing management of biofouling, including:
- applying an antifouling paint on the hull and niche areas
- developing, maintaining, and following a biofouling management plan
- keeping records of maintenance activities in a biofouling record book
- regular hull inspections and cleaning.
Best practices are outlined in the International Maritime Organization's (IMO's) Guidelines for the control and management of ships' biofouling to minimize the transfer of invasive aquatic species.
What to put in a biofouling management plan [PDF, 1009 KB]
If you do not know if your vessel has been managed using best practice, MPI has guidance to help you check your vessel's risk level.
Self-assess your vessel’s risk profile [PDF, 195 KB]
Cleaning prior to arrival
For long-stay vessels, the recommended option is to clean the vessel's entire hull, including all niche areas, fewer than 30 days before arrival to New Zealand.
You must provide evidence that all hull and niche areas have been cleaned of all fouling in excess of goose barnacles and a slime layer. Acceptable evidence:
- may include hull cleaning or dry docking reports
- should include photographs or video of all hull and niche areas after cleaning.
Cleaning with an MPI-approved treatment supplier
If you know your vessel is fouled and you want to have it hauled out or re-fitted in New Zealand, before you arrive you must:
- book an appointment for haul-out with an MPI-approved treatment supplier (the booking time must be within 24 hours of arrival)
- give MPI evidence of your booking with the provider.
Currently, in-water cleaning of international vessels is not allowed in New Zealand. This means that there are no approved providers of in-water cleaning services for international vessels at this time.
If your vessel can't meet the CRMS requirements using one of the 3 options, you may develop a craft risk management plan that outlines alternate but equivalent ways of managing biofouling. Craft risk management plans must:
- be approved by MPI
- include steps to reduce risk to the equivalent level of arriving with a clean hull.
If you are interested in developing a craft risk management plan, for more information please contact email@example.com
If you cannot provide verifiable evidence that you've used one of the compliance options above, MPI may:
- require a hull inspection on arrival to New Zealand
- restrict your New Zealand itinerary
- restrict entry of your vessel to New Zealand
- ask you to clean your vessel within 24 hours by an approved provider in New Zealand.
These measures will be at the expense of the vessel owner or operator.
If you are directed to undertake a hull inspection on arrival, you can choose the inspection provider who will do this.
Check what you'll need to do to get your vessel ready to meet the new biofouling requirements.
- Biofouling management for commercial vessels
- Biofouling management for work vessels
- Biofouling management for commercial fishing vessels
- Biofouling management for recreational vessels
MPI can help you:
- develop MPI-endorsed codes of practice for your industry group to help members comply with requirements
- develop an MPI-approved craft risk management plan for your vessel
- get advice on acceptable hull preparation, cleaning, treatment, and inspection.
For further details, email firstname.lastname@example.org
Science behind the CRMS thresholds [PDF, 901 KB]
If you have questions about: