NHS Nautical Chart NHS134: Ursfjorden og Velfjorden Western Basin This feature displays high resolution Depth This feature displays high resolution Depth Range Shading for up to 10 depth ranges so you can view your designated target depth The nv charts are characterised by fine contours and easy to distinguish colour graduations of the depth lines – turquoise for coral reefs This nautical chart is provided by the Norwegian Hydrographic Service (NHS) The 100+ charts—which comprise a majority of the charts produced by NHS—are updated regularly using the same technology OceanGrafix developed to print US charts on demand