An Open Source Initiative for Hydrography
Cruise Tools is a plugin for QGIS 3.x aimed to help the ocean mapper to perform the following reoccurring tasks just in few clicks:
Loading, coloring and shading bathymetry grids
Exporting colored and shaded RGB grids
Calculating raster coverage
Creating smooth filtered contours
Generating DD, DDM, and XY coordinate attributes for point features
Generating length (m, km, and nm) attributes for line features
Generating area (m2 and km2) attributes for polygon feature
Estimating MBES coverage on a specific DEM
Exporting the survey lines plan to the navigation system
It is developed by Simon Dreutter and Fynn Warnke (Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research.)
More information and download links here