MGGS WELCOME TO MGGS Marine Geological and Geophysical Services Assisting operators and contractors to develop their activities in the MSGBC Basin. MGGS Marine Geological and Geophysical Services Assisting operators and contractors to develop their activities in the MSGBC Basin. WELCOME TO MGGS MGGS WELCOME TO MGGS Marine Geological and Geophysical Services Assisting operators and contractors to develop their activities in the MSGBC Basin.