Hull Gauging Inspection Services

What Is Hull Gauging? 

Hull gauging is a non-destructive testing (NDT) technique that involves ultrasonic thickness measurement of a vessel’s hull structure to assess corrosion, metal loss, and compliance with regulations. It is a requirement for class renewal surveys conducted by leading organizations such as ABS, DNV, and BV. 

By measuring and monitoring structural integrity, Dexon Technology’s hull gauging services help shipowners maintain class certification, extend asset life, and avoid costly repairs or detentions. 

Common Problems and How Hull Gauging Provides Solutions 

Ships operating in harsh marine environments are vulnerable to corrosion, coating breakdown, and structural thinning. Without regular gauging, these issues can lead to: 

• Loss of Class Certification: Classification societies require up-to-date thickness reports for compliance and safe operation. 

• Undetected Corrosion or Metal Loss: Internal and external corrosion can significantly weaken hull strength. 

• Unexpected Repairs or Downtime: Missed or inaccurate readings may result in delays or emergency repairs during dry-docking. 

• Safety and Liability Risks: Structural weaknesses can compromise vessel seaworthiness, endangering cargo and crew. 

Hull gauging addresses these challenges by: 

• Providing Accurate Metal Thickness Readings: Uses calibrated ultrasonic devices to measure hull plating, stiffeners, and internal structures. 

• Mapping Areas of Corrosion and Thinning: Identifies critical zones requiring recoating, repair, or replacement. 

• Ensuring Class Compliance: Meets the reporting formats and technical standards required by ABS, DNV, BV, and other classification bodies. 

• Supporting Predictive Maintenance: Provides early warning of potential failures and assists in planning dry-dock work scopes. 

Methods Used in Dexon’s Hull Gauging Services 

Dexon Technology uses approved ultrasonic gauging tools and certified procedures to meet international standards. Our services include: 

• General Hull Thickness Measurement: Covers shell plating, deck plating, bulkheads, inner bottom, and framing. 

• Close-Up Survey Areas: Focuses on high-risk zones such as cargo holds, tank tops, and machinery spaces. 

• Remote Access Surveys: Rope access or drone support for hard-to-reach and elevated structures. 

• Corrosion Mapping: Creates a digital profile of hull degradation for review and documentation. 

• Class-Ready Reporting: Produces formatted thickness measurement reports, complete with diagrams, tables, and certifications. 

The Dexon Difference 

Dexon Technology’s hull gauging inspection services are trusted by shipowners and shipyards for accuracy, efficiency, and compliance. What sets us apart: 

• Class-Approved Gauging Teams: Our inspectors are trained, certified, and approved by leading classification societies. 

• Fast Turnaround: We deliver hull gauging reports quickly. 

• Rope Access and Confined Space Capabilities: Enables complete hull inspection with minimal staging or disruption. 

• Onboard Coordination: Our team works closely with superintendents and surveyors to align with dry-docking schedules. 

• Integrated Services: Can be bundled with VT, UT, or coating inspection for comprehensive hull assessments. 

Choose Dexon for Your Hull Gauging Requirements 

With Dexon Technology, clients receive more than just a hull survey—they gain a reliable partner in regulatory compliance and structural assurance. Our hull gauging services help ensure class renewal, safe operation, and long-term vessel performance. 

• Class-compliant thickness measurements and reporting 

• Global experience with ABS, DNV, BV, and other societies 

• Trusted by tanker, bulk, offshore, and container operators worldwide 

Stay ahead of class requirements and prevent costly surprises with Dexon’s certified hull gauging inspection services. Contact us today to schedule your next vessel survey.