The newest version of the viewer prototype is publicly available via this URL:
The prototype is under constant development and is updated regularly.
There is also a viewer integrated into the Marine Data navigation https://marine-data.de/?site=viewer
which uses the built VEF library.
The prototype only runs in a current version of Google Chrome. Support for Safari and Firefox is planned.
A sketch of the planned architecture can be seen here (work in progess):
The source code for the VEF is located on the AWI GitLab Server: