Underwater Inspection Thailand: Flat Bottom Inspection and UT Measurement at Kerry Siam Sea Port
- MaxiDive
- Aug 13
- 4 min read
Updated: Aug 14
MaxiDive completed a professional underwater inspection Thailand project at Kerry Siam Sea Port, providing a detailed assessment of the vessel’s flat bottom and selected underwater areas while the vessel remained afloat.
The inspection combined underwater visual assessment, HD CCTV monitoring and ultrasonic thickness measurement to provide the vessel’s technical team with clear information about the observed underwater condition.
The objective was to identify and document visible abnormalities, evaluate selected structural areas and collect measurable thickness data for technical review and future maintenance planning.
Why Flat Bottom Inspection Matters
The flat bottom is one of the largest continuously submerged areas of a vessel and can be affected by coating deterioration, corrosion, mechanical contact and localized structural damage.
A systematic underwater inspection allows accessible areas of the hull to be examined without requiring the vessel to enter dry dock solely for visual assessment.
During this inspection, the MaxiDive commercial diving team examined the accessible flat bottom and selected underwater appendage areas.
The general condition of the inspected flat bottom was found to be satisfactory. No significant marine fouling was observed, and the accessible weld seams and topcoat were visually assessed as part of the inspection.
A localized area requiring additional technical attention was identified and documented.
The purpose of the inspection was to provide the vessel’s technical representatives with accurate underwater evidence so that any subsequent technical decisions could be made based on the observed condition and recorded measurements.
Underwater Inspection Thailand with HD CCTV and UT Measurement
The underwater inspection Thailand operation was supported by HD CCTV equipment and surface monitoring systems.
This allowed the inspection process to be monitored from the surface while the commercial diver examined the required underwater areas.
Ultrasonic thickness measurement was also carried out at selected locations.
UT measurement provides measurable information about the remaining thickness of steel plating. When combined with underwater visual inspection, these readings provide technical personnel with additional information for evaluating structural condition.
The combination of:
underwater visual inspection;
HD CCTV monitoring;
ultrasonic thickness measurement;
underwater photography;
video documentation;
structured reporting
creates a more complete technical record than visual observations alone.
Flat Bottom and Underwater Appendage Assessment
The inspection included examination of the flat bottom together with selected underwater appendages and fittings.
Accessible areas were assessed for visible signs of:
coating condition;
structural irregularities;
possible mechanical contact;
corrosion or material deterioration;
condition of visible weld areas;
condition of selected underwater fittings and appendages;
localized abnormalities requiring further technical review.
The general inspected flat-bottom condition was satisfactory.
Selected appendages were also visually examined and documented. Observations from the inspection provided the vessel’s technical team with a direct underwater reference of their visible condition at the time of inspection.
A localized area of concern was identified on the underwater structure and recorded for further technical evaluation.
UT Measurement Supports Technical Condition Assessment
Visual inspection provides important information about the appearance and location of an underwater condition, while ultrasonic thickness measurement adds measurable structural data.
UT readings can assist vessel managers and technical superintendents in evaluating the remaining material thickness at selected locations.
This information can support decisions regarding:
further technical assessment;
maintenance planning;
engineering review;
condition monitoring;
comparison with future inspection results.
The MaxiDive team’s role during this operation was to inspect, measure and document the underwater condition.
Any subsequent maintenance or corrective action can then be evaluated separately by the vessel’s responsible technical personnel based on the inspection findings and applicable requirements.
HD CCTV and Technical Documentation
Professional underwater inspection is not limited to what the commercial diver observes below the waterline.
Clear technical documentation allows findings to be reviewed after completion of the diving operation.
During the project, HD CCTV and surface monitoring equipment supported communication and visual observation of the inspection process.
Underwater photo and video records were used to document accessible areas and provide a visual reference for technical review.
Depending on inspection requirements, underwater documentation can provide information regarding:
hull plating condition;
visible weld areas;
underwater appendages;
areas showing possible mechanical contact;
coating condition;
selected structural details;
UT measurement locations;
other visible underwater abnormalities.
This creates a structured record that can support vessel condition monitoring and future inspection comparison.
Underwater Inspection Operations at Kerry Siam Sea Port
At Kerry Siam Sea Port, MaxiDive provides professional underwater inspection support for vessels requiring technical condition assessment while remaining afloat.
Inspection capabilities include:
underwater hull inspection;
flat bottom inspection;
hull and appendage condition assessment;
underwater CCTV inspection;
propeller and rudder condition inspection;
ultrasonic thickness measurement;
underwater photo and video documentation;
technical inspection reporting.
Operations are coordinated according to vessel schedules, port conditions, underwater visibility, access requirements and the agreed inspection scope.
For vessel managers and technical superintendents, this provides direct underwater information without requiring dry docking solely for visual condition assessment.
Supporting Vessel Condition Decisions with Reliable Underwater Data
The main value of an underwater inspection is the quality of the information it provides.
Visual evidence, CCTV monitoring and measurable UT data allow technical teams to evaluate underwater condition based on documented observations rather than assumptions.
When an abnormality is identified, its location and visible condition can be recorded and supported with measurement data where applicable.
This enables vessel operators to determine the appropriate next technical step based on actual underwater findings.
MaxiDive provides professional underwater inspection Thailand services at Thai ports, supported by commercial diving teams, HD CCTV systems, UT measurement equipment and structured technical documentation.
MaxiDive — We work under pressure.
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Need an underwater hull inspection, UT measurement or technical condition assessment while your vessel remains afloat?
Contact MaxiDive for professional commercial diving and underwater inspection services across Thailand's major ports and anchorages.
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