⚠ This is a FICTIVE example generated for the ENCoreGIS user manual. The findings are illustrative only — not the result of a real audit.

# ENC Source-Validation Report

ENC: U5 Harbour — Aids to Navigation · Source: Rijkswaterstaat AtoN register (WFS) — EXAMPLE · clipped to coverage polygon · 2026-06-27 21:36 UTC

48
chart features
51
source features
7
findings
3
source out of area
Excluded from comparison: 1 ENC feature on the known-fault denylist; 1 source feature on the known-fault denylist.
Known faults flagged:

- ENC: Oude Hoofd — LNAM `1F2B0279CCDD0001` — known charting fault — accepted, awaiting next issue
- Source: AtoN-9921 — decommissioned; source register not yet updated

## U5 Harbour — Aids to Navigation (7 findings)

### Test 1 — Feature present in the source but missing from the chart 2

- Source AtoN 'OG-7' at 51.4471N 3.5902E — no chart buoy within 10 m
- Source beacon 'Hoofdplaat E' at 51.4123N 3.6440E — not charted

### Test 2 — Feature present in the chart but missing from the source 1

- Chart buoy 'SG-3' (LNAM 1F2B0279AABB0001) — no source AtoN within 10 m

### Test 3 — Co-located feature has a value that does not match the source 3

- 'NW-2': COLOUR chart=3 (red) vs source=4 (green)
- 'NW-4': CATLAM chart=2 (starboard) vs source=1 (port)
- 'E-Hoofd': TOPSHP chart=2 vs source=1 (cone, point up)

### Test 4 — Same identifier appears at a different location in chart and source 1

- 'WG-5' charted 38 m from the source position (match buffer 10 m)

Kind regards from
teamScheepvaart | Rijkswaterstaat CIV IGA DOA
Sail the seven seas in peace