The Support Utility for Survey Submission Integrity Evaluation (Sussie) app is a collection of tools providing functionalities to handle hydrographic survey data.
Sussie represents an open-source (MIT License) collaborative effort led by the Danish Geodata Agency.
The source code is publicly available here: Bitbucket repo
Current release: 1.9.2
For more information on how to use Sussie, read the online manual.