Replacement Mast Installation - 12 Wing Shearwater

The Department of National Defence (DND) is proposing to carry out construction of new transmitter site that will house radios and air traffic management equipment at Shearwater. This includes the installation of two 100 foot all welded self support communications towers, a waveguide bridge, a communication cabinet and a communications shelter. The communications shelter will comprise of a standby power source, electrical services, and heating, ventilation, and air conditioning requirements fully ready for communication and radio equipment. The proposed building construction project is scheduled to take place in Fiscal Year 2023-2024.

Latest update

March 29, 2023— The Department of National Defence issued its Notice of Determination and determined that the project is not likely to cause significant adverse environmental effects.



Key documents

Key documents
Document Number Document Title File Date
2 Notice of Determination - March 29, 2023
1 Public Comment Period on Intent to Make a Determination - February 13, 2023


Leslie Thomlinson
Department of National Defence
Leslie Thomlinson, Senior Project Manager
NDHQ - 101 Colonel By
Ottawa, Ontario K1A 0K2
Telephone: 613-995-6238

  • Location

    • 12 Wing Shearwater (Nova Scotia)
  • Nature of Activity

    • Airport and Airfields
    • Other, not otherwise specified
  • Assessment Status

  • Start Date

  • Proponent

    Department of National Defence
  • Authorities

    • Department of National Defence
  • 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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