
What is Underwater Ship Survey and How Is It Conducted?
What is Underwater Vessel Survey and How Is It Conducted?
Underwater vessel survey is the process of professionally examining a vessel’s submerged sections by certified divers. This procedure focuses on detecting damage, corrosion, and fouling on underwater components such as hull, propeller, rudder, anchor, and chain.
Why is Underwater Vessel Survey Necessary?
This survey enables vessel inspection without dry-docking, offering significant time and cost advantages. Additionally, potential malfunctions can be detected early, preventing major issues.
How Does the Underwater Survey Process Work?
- Planning: Necessary permits are obtained from port authorities.
- Equipment Preparation: All devices including cranes, tanks, and compressors are checked.
- Vessel Briefing: Crew is informed about the diving operation.
- Diving and Inspection: Divers examine hull, propeller, rudder and other components.
- Damage Detection: Visual and measurement data is collected.
- Reporting: A detailed report is prepared with images and measurements.
Primary Equipment Used
Professional underwater surveys utilize the following equipment:
- CCTV systems
- Measuring devices like calipers and tape measures
- Cranes, slings, lifting balloons
- Pressure tanks, compressors, decompression chambers
- Underwater welding and cutting equipment
Additional Services
- Propeller polishing and damage repair
- Anchor and chain recovery
- Underwater pipeline installation
- Hull repairs
- Wreck vessel recovery operations
Conclusion
Underwater vessel surveys ensure safe and economical vessel operation. With professional equipment and expert teams, both efficient and rapid results can be achieved.