TDG provides maintenance and condition-based servicing for jetties, wharves, fender systems, ramps, pylons and underwater structural components. Work includes cleaning, cutting, biofouling removal, anode installation, structural assessment, bracket replacement, mooring servicing, chain inspection and targeted repair tasks.

Maintenance activities support long-term asset reliability and help owners manage aging marine structures efficiently. Services are delivered under controlled diving operations, engineered methods and compliance-driven reporting.

This capability supports councils, port authorities, aquaculture operators, private marinas and civil contractors.