After over 40 days aboard the Fundy Legend, our team officially completed a high-resolution multibeam bathymetric survey around Hudson Bay. This project was requested and funded by Fisheries and Oceans Canada and the Canadian Hydrographic Service as part of the Government of Canada’s Oceans Protection Plan, which focused on delivering detailed seafloor data which will be used to update and generate charts to support and assist navigation and future scientific research in the area.
This work was carried out by our partnership company, Kitikmeot Challenger, which was awarded the contract and played a key role in planning and delivering this important project.
Our team overcame cold winds, tight vessel space, and demanding equipment logistics to deliver detailed seafloor data that will support navigation and future scientific research in one of Canada’s most rugged marine environments.
The team relied on the Kongsberg EM-2040 multibeam sonar system, supported by frequent Sound Velocity Profiles collected using a Valeport probe. The team conducted continuous data monitoring and initial quality control in CARIS HIPS and SIPS.
Before operations began, the hydrographic system underwent a full calibration sequence using both hull-mounted and pole-mounted configurations. This included a detailed patch test to confirm pitch, roll, and yaw offsets, which is essential for reliable sonar performance in the constantly shifting conditions of Hudson Bay.

Working from a compact vessel required adaptability and cooperation. That, along with the unpredictable weather and sea conditions on Hudson Bay put our team to the test.
Despite these tough field conditions, this experience reinforced our ability to safely produce a high-quality bathymetric data set and deliver quality service to our clients. Challenger strives for operational excellence on all our projects. We learn from our past and carry these experiences into all future projects.
We look forward to supporting additional Oceans Protection Plan initiatives and future CHS programs.
