TDG supports construction projects through diver-assisted installation, inspection and access services. Capabilities include pile preparation, scour evaluation, underwater cutting and welding, cable placement and armouring, HDD drilling support, pipeline installation, structural fit-up, lift support and verification of subsea construction stages.

Containerised or trailer-mounted dive systems allow rapid deployment to a wide range of construction sites. Coordination with engineering teams ensures accurate execution of sub-surface tasks within broader project schedules.