A case study on the introduction of an advanced ship inspection method: Gross tonnage measurement 3D point clouds
This study examines the feasibility of gross tonnage (GT) measurement using 3D point cloud technology as a digital alternative to traditional manual methods. While ships over 24 m follow standardized regulations under the 1969 Tonnage Measurement Convention (TMC), those under 24 m are subject to div...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-01-01
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| Series: | International Journal of Naval Architecture and Ocean Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2092678225000354 |
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| Summary: | This study examines the feasibility of gross tonnage (GT) measurement using 3D point cloud technology as a digital alternative to traditional manual methods. While ships over 24 m follow standardized regulations under the 1969 Tonnage Measurement Convention (TMC), those under 24 m are subject to diverse national rules, often based on simplified formulas. In this study, 3D point clouds were acquired using laser scanners for two Korean vessels—a government-owned ship over 24 m and a fishing vessel under 24 m. After post-processing, the enclosed volume was estimated using a convex hull algorithm and compared with GT values calculated under national standards. The point cloud-based method showed minimal variation, with a maximum difference of 0.30 % in volume and 0.23 TON in GT. These results indicate that 3D scanning provides a reliable and accurate alternative for GT measurement and offers potential for broader institutional adoption through standardized digital workflows. |
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| ISSN: | 2092-6782 |