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GB/T 46159-2025General technical specifications for subsea self-moving trenching operation system (English PDF)

水下自行走挖沟作业系统通用技术要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

March 1, 2026

Scope

GB/T 46159-2025 is the English-translated version of 水下自行走挖沟作业系统通用技术要求.

GB/T 46159-2025 is the Chinese national standard covering the self-propelled trencher that walks or tracks along the seabed instead of being towed — the jetting or chain cutting, the tracks on soft mud, the umbilical and the power, the navigation along the route, and the burial depth verified as it goes.

First edition, with the plough standard GB/T 46160-2025. In force from 1 March 2026. Issued on 29 August 2025, it has been in force since 1 March 2026.

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Document preview — GB/T 46159-2025

National Standard of the People's Republic of China

ICS: 47.020.50
Classification: U 34

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Function and composition3
4.1 Function3
4.2 Composition4
5 Technical Requirements5
5.1 Environmental adaptability5
5.2 Appearance and corrosion protection6
5.3 Power Supply6
5.4 Pressure6
5.5 Safety Protection6
5.6 Electromagnetic Compatibility6
5.7 Interface6
5.8 Performance6
6 Test methods7
6.1 Environmental adaptability7
6.2 Appearance and corrosion protection7
6.3 Power Supply7
6.4 Pressure7
6.5 Safety Protection8
6.6 Electromagnetic Compatibility8
6.7 Interface8
6.8 Performance8
7 Inspection Rules9
7.1 Inspection Type9
7.2 Type inspection9
7.3 Factory Inspection9
7.4 Inspection Items9
7.5 Qualification determination10
8 Marking, packaging, transportation and storage10
8.1 Sign10
8.2 Packaging and transportation10
8.3 Storage11

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the National Technical Committee for Standardization of Submersibles (SAC/TC306).

This document was drafted by: Shanghai CRRC Aisendi Marine Equipment Co., Ltd., CNOOC Shenzhen Marine Engineering Technology Service Co., Ltd., China Communications Service Marine Technology (Shanghai) Co., Ltd., China Southern Power Grid Co., Ltd. Ultra-High Voltage Transmission Company, Shanghai Yantu Ship and Maritime Technology Co., Ltd., China Ship Science Research Center, Harbin Engineering University, Shanghai Infrastructure Engineering Group Co., Ltd., Marine Chemical Industry Research Institute Co., Ltd., Qingdao Aokang Quality Inspection Technology Co., Ltd.

The main drafters of this document are: Zhang Dinghua, Song Junhui, Liu Ke'an, Wang Jiewen, Qin Hongde, Wang Hua, Tu Shaoping, Wang Hongfei, Guo Yuanyuan, Xiang Liyang, Huang Xiaowei, Zhu Jianbo, Peng Bo, Wang Yong, Niu Liang, Zhou Changjiang, Du Xinguang, Dai Zhiqian, Shen Guang, Yang Zisong, Li Jun, Wang Bo, Lu Wei, Zhai Xiaokang, and Wang Jie.

General technical requirements for underwater self-propelled trenching systems

1 Scope

This document specifies the functions and components of the underwater self-propelled trenching system (hereinafter referred to as the "underwater self-propelled trenching system").

Requirements, test methods, inspection rules, marking, packaging, transportation and storage.

This document applies to the manufacture and inspection of underwater self-propelled trenching systems.

2 Normative references

GB/T 191

GB/T 4208

GB/T 10250

GB 11291.1

GB/T 11605

GB/T 21412.1

GB/T 21412.8

GB 27881

GB/T 32065.2

GB/T 32065.4

GB/T 32065.10

GB/T 32065.14

GB/T 32065.15

GB/T 36896.1

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 chassis

The main structure carries the buoyancy module, crawler self-propelled mechanism, propulsion system, underwater power unit, trenching tools, etc.

3.2 Buoyancy module buoyancy module

A modular structure installed on top of the underwater body to adjust buoyancy.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 46159

Edition	Title	Revision	Status
GB/T 46159-2025	General technical specifications for subsea self-moving trenching operation system	current edition	Current

This page sells the current edition, GB/T 46159-2025. Earlier editions are listed for reference only.

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