Subtidal Cobble Replacement

Seaspan ULC proposes to replace subtidal cobble in Burrard Inlet adjacent to their facility located in North Vancouver. The cobble substrate was scoured by vessel activity and replacement of the cobble will reinstate habitat conditions and promote kelp growth at the site. The cobble placement area (approximately 870 square meters) is on the subtidal slope of the eastern edge of the shipyard. The cobble placement is proposed to be completed by barge fitted with a telebelt (conveyor) to place the cobble on the seabed. This method allows the operator to control the speed and distribute the cobble evenly across the area. The telebelt will be configured so that the cobble is released as close to the seabed as possible. The targeted coverage will be 75 percent to allow spacing between cobbles to allow for kelp growth and refuge areas for fish. The project is anticipated to take one day to complete and will take place during the fisheries least risk window for Burrard Inlet.

Latest update

Notice of determination – Subtidal Cobble Replacement

North Vancouver, B.C. – February 3, 2020 – The Vancouver Fraser Port Authority has determined that the proposed Subtidal Cobble Replacement is not likely to cause significant adverse environmental effects.



Project and Environmental Review
Vancouver Fraser Port Authority
100 The Pointe, 999 Canada Place
Vancouver, British Columbia V6C 3T4

  • Location

    • North Vancouver (British Columbia)
  • Nature of Activity

    • Ports and Harbours
    • Remediation and conservation
  • Assessment Status

  • Start Date

  • Proponent

    Seaspan ULC
  • Authorities

    • Vancouver Fraser Port Authority
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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