MARINE GEOPHYSICAL and OTHER SERVICES Completing the exploratory, geotechnical, and hydrogeological drilling works we also provide the supporting services to those works such as: •Positioning, Topographic Survey and Bathymetry •Geophysical Logging •Pumping Test and Slug Test. •Basic Geotechnical Engineering •Metocean and Meteorology •Soil Laboratory Test (have associate with PT. Hydrocore –sister company)