| Feature | NORSOK N-003:2017 | API RP 2GEO (1st Ed.) | DNVGL-RP-C212 | | :--- | :--- | :--- | :--- | | | Fixed & floating structures, foundations | Geotechnical design only | Offshore soil investigation | | Free PDF available? | No (HTML free) | No | No | | Ice load detail | High (Barents Sea focus) | Low (Gulf of Mexico focus) | Medium | | Cyclic soil testing | Mandatory for soft clays | Recommended | Mandatory for certain cases | | Scour calculation | Empirical formula provided | Reference to external | Detailed analytical |
| Annex | Title | Why it's important | | :--- | :--- | :--- | | | Metocean Criteria (Norwegian Sector) | The most valuable part. It provides specific wave heights, wind speeds, and current profiles for specific geographic blocks in the North Sea, Norwegian Sea, and Barents Sea. | | Annex B | Sea State Spectra | Technical details on JONSWAP parameters and spectral shapes. | | Annex C | Marine Growth | Defines the thickness of marine growth (biofouling) based on water depth. This increases wave forces significantly. | | Annex D | Ice/Snow | Data on ice accumulation on topside structures. | norsok n003 pdf
: It works in conjunction with NORSOK N-001 (Integrity of offshore structures) and NORSOK N-006 (Assessment of existing structures) to maintain required safety levels. Latest Edition and Revisions | Feature | NORSOK N-003:2017 | API RP 2GEO (1st Ed
This is the most frequently referenced part of the standard. | | Annex B | Sea State Spectra
It was created to replace individual oil company specifications and provide a unified, rational basis for design. While it is mandatory for the Norwegian shelf, its influence has spread globally. Many international projects in harsh environments (e.g., the UK North Sea, Canada’s East Coast, and Russia’s Sakhalin Island) adopt NORSOK N003 as a reference standard due to its rigorous approach to environmental loads and geotechnical design.
. While they were historically free, current versions usually require a license or purchase. Official Source: You can find the latest edition (Edition 3, 2017) on the Standards Norway website Public Access:
Provides the framework for verifying the integrity of existing structures when coupled with NORSOK N-006 .