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Class-Approved Internal Ship Repair & Underwater Mechanical Services

MaxiDive Co., Ltd provides professional class-approved internal ship repair and underwater mechanical services for commercial vessels in Thailand and throughout the Gulf of Thailand. Our certified industrial dive teams perform complex internal repairs, valve removal and installation, and other precision underwater mechanical work with full compliance to classification society requirements.

Whether your vessel is in port or at anchorage, MaxiDive delivers reliable underwater solutions that reduce downtime, support regulatory compliance, and minimize operational disruption.

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What is Internal Ship Repair?

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Internal ship repair includes a range of underwater mechanical services performed inside ship structures such as:

  • valve removal and installation

  • seal replacement

  • internal system adjustments

  • defect corrective work

  • temporary structural fixes

  • underwater machinery assistance

These services are commonly required during routine maintenance, pre-inspection preparation, emergency internal repairs, or when system components fail below the waterline.

Class-approved internal ship repair works including steel cutting and welding inside vessel machinery spaces
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Fabrication and mechanical repair of heavy ship machinery components as part of internal ship repair services

Valve Removal, Installation & Seal Replacement

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MaxiDive’s certified divers are trained to perform precise underwater valve removal and installation for commercial vessels, including:

  • hydraulic and pneumatic valve systems

  • sea chest valve systems

  • fresh water and ballast system valves

We also perform expert seal replacement and gasket installation to prevent leaks, ensure system integrity, and restore optimal operational functionality without the need for dry-docking.

All internal valve work is documented with photos, video evidence, and written reports suitable for class societies and technical managers.

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Underwater Mechanical Repair Services

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Our internal mechanical repair services include:

  • internal component assessment and alignment

  • corrective repair of worn or damaged mechanical parts

  • emergency assistance for malfunctioning internal systems

  • coordinated inspection support for class surveyors

 

MaxiDive divers utilize advanced underwater tools and follow strict safety protocols to ensure quality results while protecting surrounding structures and equipment.

Temporary Repairs & Emergency Support​

 

When internal systems fail unexpectedly, MaxiDive provides rapid-response temporary repair services to stabilize affected components and enable continued operation. Temporary underwater repairs may include:

  • temporary patching or shoring of internal hull or bulkhead areas

  • quick-fix mechanical adjustments

  • interim valve or seal support

Temporary services are carried out in accordance with best practices and class acceptance criteria, enabling longer-term planning and scheduled maintenance.

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Class Approvals & Documentation Compliance​

MaxiDive’s internal ship repair and underwater mechanical services are performed under standards accepted by major classification societies and technical stakeholders, including:​

  • DNV-GL

  • Bureau Veritas (BV)

  • ClassNK – Nippon Kaiji Kyokai

  • Lloyd’s Register (LR)

  • ABS – American Bureau of Shipping

  • KR – Korean Register

  • RINA Services S.p.A.

  • CCS – China Classification Society

All work includes detailed reporting, photographic and video evidence, and written technical observations suitable for submission to class societies, insurance providers, port authorities, and ship managers.​​

Mechanical installation and inspection of ship internal machinery components performed by certified marine technicians
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Certified commercial diver preparing for underwater mechanical repair and internal ship maintenance operations

Why Choose MaxiDive for Internal Ship Repairs?

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  • 24/7 availability at all major Thai ports and anchorages

  • Certified commercial divers with technical expertise

  • Class-compliant and documented underwater work

  • Reduced operational downtime and inspection acceptance

  • High-definition reporting and structured recommendations

 

MaxiDive delivers reliable, safe, and efficient internal ship repair services that help vessel operators maintain regulatory compliance, support technical decisions, and optimize fleet performance.

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