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Marine Biosecurity Rules

Marine Biosecurity Rules

Marlborough, Nelson, Tasman, and Wellington

Marine Biosecurity Rules for Marlborough, Nelson, Tasman, and Wellington

Vessel hull fouling limits

Your vessel’s hull must be clean when entering the Marlborough, Nelson, or Tasman regions.

Ensure fouling on your vessel's hull and niche areas does not exceed ‘light fouling’ or Level 2 fouling on the Cawthron Level of Fouling scale, for example, small patches or isolated barnacles (1 - 5% coverage), unless:

  • You're entering for a haul-out, which must happen within 24 hours.
  • There's an emergency affecting the safety of the craft or people on board.
  • There's a declared state of emergency.

This rule does not apply if:

Click image to enlarge:

Mediterranean fanworm (Sabella spallanzanii)

If you suspect that you have discovered Mediterranean fanworm on your vessel, you must notify the local Council.

Council will work with you to create a plan to treat or manage the infestation on the vessel, preventing further spread.

You should not attempt to remove Mediterranean fanworm yourself, as disturbing or incorrectly removing can lead to the unwanted spread of this species.

Report Mediterranean fanworm:

Marlborough District Council 03 520 7400

Nelson City Council 03 546 0200

Tasman District Council 03 543 8400

Greater Wellington Regional Council 0800 496 734

Marlborough District Council Regional Pest Management Programme and Nelson City Council/Tasman District Council Marine Pest Rules. To read the rules in full, please click the links below:

Marina access

Marinas and ports can impose specific requirements on visiting vessels and may refuse service if these requirements are not met.

Many marinas follow the 6 or 1 rule. This means that boats must have been antifouled within 6 months of entering the marina or lifted and hauled out within 1 month.

It is recommended that you check with individual marinas before you plan to visit.