Standard for terminology of shipbuilding engineering
1Key Takeaways
The "Standard for Engineering Terminology in the Shipbuilding Industry" has been officially approved as a national standard with the designation GB/T 51470-2025, and will take effect from September 1, 2025. This standard is publicly available on the official website of the Ministry of Housing and Urban-Rural Developmen…
2Expert Interpretation
An in-depth interpretation of GB/T51470-2025, the national standard for shipbuilding industry engineering terminology, covers core technical terms such as shipbuilding technology, test facility classification, hydraulic engineering specifications, and includes definitions of professional equipment such as modern shipbuilding models, segmented coating processes, and cavitation water cylinders, providing a standardized terminology reference for ship engineering design.
Core Content of the Shipbuilding Industry Engineering Terminology Standard
GB/T51470-2025, jointly issued by the Ministry of Housing and Urban-Rural Development and the State Administration for Market Regulation, systematically standardizes the professional terminology system for shipbuilding industry engineering construction. This standard consists of seven chapters and four appendices, with a total of 81 term definitions, applicable to the entire process of shipbuilding industry engineering planning, design, construction, and supervision.
Comparison of standard frameworks
| Chapters | Number of terms | Key technical areas |
|---|---|---|
| Construction and repair technology | 142 | Segmented construction, coating technology, electromechanical assembly |
| Test facilities | 28 | Cavitation water cylinder, anechoic pool and other scientific research equipment |
| Hydraulic engineering | 48 | Dock structure, ship lift and other hydraulic structures |
Analysis of key technical terms
Modern Shipbuilding Model (3.1.4)
Definition: Consists of an advanced production model combining hull, superstructure, and coating integration with a lean management model. Typical applications include the digital segmented logistics system employed by Jiangnan Shipyard, which enables precise distribution of intermediate products through pallet management (3.2.7).
Cavitation Water Cylinder (4.2.1)
Key Parameters: Test section flow velocity ≥ 15 m/s, cavitation number range 0.2-5.0. Harbin Engineering University's laboratory uses this equipment to study propeller cavitation performance, effectively reducing ship vibration and noise.
Implementation recommendations
- Design phase: Give priority to the unit assembly (3.3.28) mode to reduce on-site work.
- Construction phase: Standardize the use of the ultra-high pressure water rust removal (3.2.54) process to replace traditional sandblasting.
- Acceptance phase: Strictly test according to the Rust removal grade (3.4.6) Sa2.5 standard.
Technology evolution analysis
Compared with the previous version, this standard adds a Low Carbon and Environmental Protection chapter (7.4), clarifies the VOCs (7.4.5) emission control requirements, and reflects the green development trend of the shipbuilding industry. In the test facilities section, new scientific research equipment terms such as Decompression Towing Tank (4.1.7) are added.