The CCGS Hudson is an offshore oceanographic and hydrographic survey vessel operated by the Canadian Coast Guard. CCGS Hudson is Canada's oldest operational ocean research vessel. She was constructed in the early 1960s for the Canadian Oceanographic Service, coinciding with the opening of the Bedford Institute of Oceanography. Formerly the CSS Hudson, it was the largest vessel built at that time specifically designed for research purposes. For over four decades, Hudson has made significant contributions to knowledge about the oceans through hydrographic surveys and oceanographic research.