What is the difference between "Terrain Mask" & "Land/Sea Mask" tools?
The "Terrain Mask" tool whenever run using S1A GRD products (either in rdc or map geometry) generated incorrect results (small percent of water bodies are captured including many artifacts).
No issues when trying the "Land/Sea Mask" tools which is probably more suited for Radar data. More accurate when inputs are TC, however, few isolated pixels and clusters of linear features appear along the coastal regions.
An update to the Help describing processing parameters is needed.