# Third-party notices & attributions — ENCoreGIS | pro

**ENCoreGIS | pro** is Copyright © 2026 **Wilhelmus Dingenus de Pooter** and is a
**private production** (not a Rijkswaterstaat production), licensed under
**GPL-3.0-or-later** (see `LICENSE`). This file lists the third-party software,
standards and assets it uses or bundles, and their terms.

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## Software it runs on / uses

| Component | Use | Licence |
|---|---|---|
| **QGIS** | Host application / PyQGIS API; the manual reproduces some QGIS theme icons | GPL-2.0-or-later |
| **GDAL / OGR** | Raster + HDF5 (S-100) reading; geometry math (via `osgeo`) | MIT/X11-style |
| **GEOS** | Geometry predicates / buffering used through GDAL/QGIS | LGPL-2.1 |
| **Qt / PyQt** | GUI (via QGIS's bundled Qt) | LGPL / GPL (as bundled by QGIS) |
| **Python standard library** | — | PSF |

ENC vector cells are read with the plugin's **own ISO 8211 / S-57 engine** — the
GDAL S-57 driver is **not** used for vector reads. GDAL is used only for the
S-100 gridded/HDF5 products (S-102/S-104/S-111) and for geometry operations.

## Standards & specifications (technical references, not redistributed)

- **IHO** — S-57 (ENC Product Specification), S-52 (Presentation Library), S-58
  (validation checks), S-4 (chart specifications), and the S-100 family:
  **S-101, S-102, S-104, S-111**. © International Hydrographic Organization.
  Used as technical references to implement reading, portrayal and validation.
- **IEHG / Inland ENC** — Inland ENC Feature Catalogues and Encoding Guide.
- **UNECE** — **CEVNI** and **SIGNI 2019** (Signs and Signals on Inland
  Waterways). The bundled notice-mark sign graphics (`svg/repository/cevni/`,
  `svg/repository/…`) are **derived from the SIGNI 2019 Annex-7 sign plates**
  (© UNECE). They are redrawn as SVG for on-chart portrayal. *If you redistribute
  this plugin, confirm the SIGNI/CEVNI sign artwork redistribution terms with
  UNECE for your use.*

## Bundled data files

- `s57catalogue/s57objectclasses.csv`, `s57attributes.csv` — S-57 / Inland-ENC
  object-class & attribute catalogues (from the open IHO/IEHG specifications;
  extended with the Inland domain).
- `ienc_fc/*.xml` — bundled Inland ENC Feature Catalogues (editions 2.3 / 2.4 /
  2.5.1) used for per-cell audit routing.
- `svg/repository/**` — the plugin's own S-52 / IALA / CEVNI symbol library
  (CEVNI signs as noted above).

## Data you load (ENC / S-100 products)

ENC cells and S-100 datasets you open with this plugin remain the property of
their **producers** (national hydrographic offices, RENCs, waterway authorities,
etc.). **You are responsible** for the proper handling of those products and for
respecting the **ownership and intellectual property** of the dataset producers,
including any licensing, distribution and usage conditions attached to them. This
plugin neither grants nor implies any right to the data it displays.

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*Team Scheepvaart is credited in the manual as the originating team context; the
copyright and IP of the ENCoreGIS | pro software rest with Wilhelmus Dingenus de
Pooter.*
