Under Water Inspection in Lieu of Dry-docking (UWILD) & In Water Surveys (IWS)

Terra Energy can offer under water inspection inspection in Lieu of Dry-docking (UWILD) & In Water Surveys (IWS). Terra Energy and our international partners UMC International Limited  is available to provide this service and  approved by various international classification societies (IACS) to conduct these surveys such as DNV-GL and Lloyds. Our UWILD and IWS specialities are with all ship types and offshore MODU’s such as Jack ups, semi-submersibles/ floaters, and drill ships. We have bases of operation strategically located around the globe, with up to date, certified and conformant equipment kept in each of them, allowing us to mobilize to your location quickly and efficiently. We can also offer our diving services from dive support vessels. Through these avenues we can be sure, and our clients can be certain, that our UWILD & IWS services will be executed professionally, efficiently and in line with any IACS requirements. When we conduct our UWILD and IWS surveys, we work closely with the IACS attending surveyor, working methodically through an agreed scope of work.

Under Water Inspection(s) in lieu of Dry-Docking (UWILD), or In Water Surveys (IWS), are required to ensure the structural and operational integrity of a marine asset throughout its operational life span.

Completing these surveys with divers, while on location, saves the asset owner and their clients both time and money by reducing downtime, limiting time off-contract, and reducing or eliminating the need for expensive and limited dry-docking. This process includes sub-surface inspection utilizing divers and a top-side inspection utilizing rope access technicians as required.


Sales Surveys
Sea Valve /Chest Inspections
Extension to dry docking
In-Water surveys in lieu of dry docking
Underwater paint thickness inspections
Plate thickness readings
MPI Inspection Services
CSWIP 3.1U Inspections
CSWIP 3.2U Inspections
Underwater Security Inspections
Impact damage inspection
Specialist propeller crack detection
Hull potential surveys
Hydrographic surveys
Underwater asset structural Inspections
Eddy current Inspections
ROV Inspection (portable and fly away)

Petronas Registration
Terra Energy Sdn Bhd currently is registered under SWEC Code SU1050000 UNDERWATER SERVICE-UNDERWATER INSPECTION/DIVING SERVICE which we can participate on any underwater service inspection require from Petronas facilities (Vessel / FPSO / FSO / Platform / Port).