GB/T 36663-2018 in English
VALIDShips and marine technology—Ships mooring and towing fittings—Closed chocks
- Issued on:2018-09-17
- Implemented on:2019-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$185.00
| Standard No: | GB/T 36663-2018 |
| Document status: | VALID |
| Title in English: | Ships and marine technology—Ships mooring and towing fittings—Closed chocks |
| Title in Chinese: | 船舶和海上技术 船舶系泊和拖带设备 闭式导缆孔 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-09-17 |
| Implemented on: | 2019-04-01 |
| ICS Classification: | 47.020.50-Deck equipment and installations |
| Chinese Classification: | U21-Mooring fittings |
| Professional Classification: | GB-National Standard |
| Related Keywords: | marine technology ships mooring
towing equipment nominal size ship technology technology evolution analysis closed fairleads |
| Related Topics: | towing
Chinese ships GB/T 36663 Closed fairlead Instruments on board GBT36663 GB/T 36663-2018 closed Ship cable tray ship logo Submarine cable technology ship mooring Ship design acceptance technology |
《GB/T 36663-2018船舶和海上技术 船舶系泊和拖带设备 闭式导缆孔》由TC129（全国船舶舾装标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of Technical Specifications for Closed Fairleads for Ship Mooring and Towing Equipment
| Nominal size (mm) | Type | Safe working load (kN) | Diameter of cable (mm) |
|---|---|---|---|
| 250X200X214 | Type A (deck) | 86 | 488 |
| 300X250X286 | Type A (deck) | 118 | 614 |
| 350X250X333 | Type A (deck) | 138 | 716 |
| 400X250X381 | Type B (navigation wall) | 156 | 820 |
Comparative Analysis of Standard Frameworks
GB/T 36663-2018 and ISO 13729:2012 are equivalent, and the main differences are reflected in the structured tables and implementation details. This standard places special emphasis on the calculation method of safe working load (SWL) when designing fairleads to ensure that the equipment does not exceed its load-bearing capacity under normal working conditions.
Explanation of professional terms and practical application cases
- Safe working load (SWL): refers to the maximum load allowed for the mooring rope under normal working conditions. For example, in the 250X200X214 model fairlead, 86 kN is its designed safety upper limit.
- Fairlead curvature radius: ensure that it is not less than 6 times the diameter of the steel cable. This can effectively reduce cable wear and extend the service life of the equipment in practical applications. For example, in the 350X250X333 model fairlead, its curvature radius is 170 mm.
Technology Evolution Analysis and Background
ISO 13729:2012, as an international standard, has been revised and updated many times to reflect the latest development needs in the field of ship technology. Its core concept is to improve the safety and reliability of mooring and towing equipment. Advanced methods such as finite element model analysis are used to ensure the structural strength of closed fairleads when subjected to horizontal and vertical loads.
Implementation Recommendations
- Selection stage:Choose the appropriate nominal size and type (Type A or Type B) according to the actual needs of the ship. Refer to the data in Table 1 and Table 2, and conduct a comprehensive evaluation in combination with SWL and cable diameter.
- Manufacturing and acceptance:Ensure that there are no obvious defects on all surfaces and that the base is reliably connected to the hull. It is recommended to use steel casting materials with high weldability and a yield strength of not less than 235 N/mm².
- Marking and maintenance: According to the IMO guidelines, clearly mark the SWL near the fairlead hole and regularly check the equipment status to ensure its safe operation within the design life.
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