20260417 11003800 1.0 TRUE Bathymetry Canadian Hydrographic Service Non-Navigational (NONNA) Bathymetric Data Canadian Hydrographic Service Non-Navigational (NONNA) Bathymetric Data. The Canadian Hydrographic Service (CHS) offers a complete inventory of bathymetric data free to the general public for non-navigational use called 'CHS NONNA' for the 'NON-NAvigational' purpose of the data. The product is at 10 metres resolution. Accessed from https://open.canada.ca/data/en/dataset/d3881c4c-650d-4070-bf9b-1e00aabf0a1d Bathymetry