Welcome to southgrade Let's Explore SOUTHGRADE ENGINEERING LTD.Engineering Services, General Construction (Building, Roads, and Bridges) Consultancy, Manufacturer Representatives and General Contracts/Services. Southgrade marine services ltd.Marine Service/Blue Economy and Marine Security Services. southgrade facilities and assets management ltd.Facility Management. security and traffic surveillance management ltd.Supplies of Arms, Surveillance Equipment, Armored Tanks and General Management.