New Speed Log Installation at Koh Si Chang Anchorage
- MaxiDive
- Jun 26
- 3 min read
MaxiDive completed a New Speed Log Installation for a commercial vessel at Koh Si Chang Anchorage, Thailand. The underwater operation was carried out to support the replacement and installation of the vessel’s speed log system while the vessel remained afloat.
The work was performed under moderate sea state conditions with approximately 1 meter of underwater visibility. MaxiDive’s commercial diving team used a camera system, cofferdam, ropes, hand tools and supporting equipment to complete the requested installation scope.
New Speed Log Installation: Service Scope
The requested underwater work focused on new speed log installation with cofferdam support. MaxiDive’s divers and technical team coordinated the operation with the vessel’s representatives, prepared the work area, installed the cofferdam and supported the technical replacement process.
The main work scope included:
diving team mobilization;
coordination meeting with vessel representatives;
lock-out/tag-out procedure support;
underwater cleaning of the installation area;
cofferdam installation;
technical replacement of the speed log;
underwater support during installation;
cofferdam removal after completion;
final testing of the new speed log;
underwater photo/video documentation.
This type of service allows vessel operators to complete speed log replacement while the vessel remains afloat, reducing the need for immediate dry docking.
Cofferdam Support for Speed Log Installation
A cofferdam was used to create controlled working conditions for the technical replacement of the speed log. After the underwater area was prepared by divers, the cofferdam was installed to support safe access and installation work.
Cofferdam support is important for underwater equipment replacement because it helps isolate the work area, reduce operational risk and allow the technical team to complete the installation more effectively.
After the new speed log was installed, the cofferdam was removed and the area was checked underwater.
Underwater Cleaning and Preparation
Before the installation, MaxiDive’s divers cleaned the working area to support proper access and visibility for the replacement process. Underwater preparation is an important part of speed log installation because marine growth, debris or poor access can interfere with technical work.
The diving team documented the work area and supported the installation process using underwater camera equipment and hand tools.
Final Testing and Installation Result
After the new speed log was installed, the technical team carried out final testing. The report confirmed that the new speed log was secure in place and that the final test was working.
This final verification is important because it confirms that the installation was completed successfully and that the vessel’s technical team received documented confirmation of the result.
Why Underwater Speed Log Installation Matters
A speed log is an important vessel instrument used to support navigation and operational monitoring. When the system requires replacement, underwater installation support allows the vessel to complete the work without immediate dry docking.
New Speed Log Installation helps vessel operators:
replace essential underwater equipment while afloat;
reduce operational downtime;
support technical repair planning;
create controlled conditions with cofferdam support;
verify installation through final testing;
maintain underwater documentation for technical records.
For shipowners, ship managers and technical superintendents, this service provides a practical solution when speed log replacement is required during vessel operations.
MaxiDive Commercial Diving Support in Thailand
MaxiDive provides underwater equipment installation, cofferdam support, underwater inspection, hull cleaning, propeller polishing, sea chest cleaning, emergency underwater repair and commercial diving services for vessels operating in Thai ports and anchorages.
This New Speed Log Installation at Koh Si Chang Anchorage demonstrates MaxiDive’s ability to support vessel technical teams with underwater preparation, cofferdam installation, equipment replacement support and final documentation.
Conclusion
The New Speed Log Installation at Koh Si Chang Anchorage was completed with underwater cleaning, cofferdam support, technical replacement assistance and final testing.
MaxiDive’s commercial diving team supported the full operation from preparation to final verification, confirming that the new speed log was secure in place and working after installation.
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