Reports

Dimensional check and final survey reports have been the foundation of our accuracy control process for the past several years, serving as the primary method for verifying geometry, alignment, and build accuracy across the shipyard assemblies.

These reports are based on targeted point measurements collected using total station and laser tracker systems. The data is processed in Spatial Analyzer, where coordinate systems are established, alignments are performed, and measured points are directly compared against design references and nominal values to evaluate deviations.

Unlike laser scanning, which analyzes entire surfaces or structural areas, these reports focus on specific critical points that define geometry, elevation, and alignment. This targeted approach allows for precise verification of key structural features.

while the department is now moving toward expanded use of check sheets for continuous monitoring, dimension checks and final survey reports remain the backbone of how accuracy has traditionally been controlled, documented, and communicated throughout the build process.

Measurement Methods

• Total station and laser tracker points survey
• Targeted control point verification
• Critical feature measurement for alignment elevation

Data Processing & Analysis

• Coordinate frame setup and alignment in SpatialAnalyzer
• Point-to-point and point-to-design comparisons
• Deviation analysis and documentation

Report Types

• Dimensional control check reports
• Unit level and alignment reports
• Final survey reports
• Hull erection final set report

How They Differ from scanning

• Focus on specific high-importance measurement points
• Efficient verification on key geometry and alignments
• Complements full-area scanning workflows

Role in the Accuracy Program

• Primary accuracy verification to date
• Supports production, engineering, and quality documentation
• Forms the baseline for newer continuous monitoring systems