| Seabed area points (Hydro, 1:1.5mil and smaller) | New Zealand Hydrographic Authority | Land Information New Zealand | Creative Commons Attribution 4.0 International | Layer | Vector | 1313 | 21 | ||
| Local magnetic anomaly polygon (Hydro, 1:90k - 1:350k) | New Zealand Hydrographic Authority | Land Information New Zealand | Creative Commons Attribution 4.0 International | Layer | Vector | 1244 | 39 |