Table of contents 
3 
Table of contents 
Part A-Introduction 5 
1 Preliminary remarks 5 
2 General 6 
3 Provisions 10 
4 Geotechnical expert 11 
5 Verification of the supporting documents 12 
6 Deviations from the standard 13 
7 Updating 13 
Part B - Minimum Requirements on geological survey with 
geophysical methods 14 
1 General 14 
2 Quality assurance 14 
3 Chronological order of events 15 
4 Objective 16 
4.1 Geological survey 16 
4.2 Inspection 16 
5 Technical guidelines 16 
6 Offshore stations 19 
7 Geological report 19 
7.1 Purpose 19 
7.2 Content 20 
7.3 Specifications 20 
Part C: Minimum Requirements on geotechnical investigations as a 
basis for planning and designing offshore structures 21 
1 Regulations and codes of practice 21 
1.1 General 21 
1.2 Standards 21 
1.3 Transitional, deviation and supplementary rules 22 
2 Requirements on offshore investigations 22 
2.1 Planning of field investigations 22 
2.2 Investigation methods 22 
2.2.1 Direct explorations (Drilling) 22 
2.2.2 Indirect explorations (Sounding and in-situ measurements) 23 
2.2.3 Soil and rock sampling 23 
2.3 Investigation steps 24 
2.3.1 Preliminary geotechnical investigation 24 
2.3.2 Main geotechnical investigation 25 
2.3.3 Special regulations for offshore stations 25 
2.3.4 Supplementary investigations 25