Rules for Building and Classing

Offshore Units

Notices and General Information

January 2025
RULES FOR BUILDING AND CLASSING

OFFSHORE UNITS
JANUARY 2025

NOTICES AND
GENERAL INFORMATION

American Bureau of Shipping

Incorporated by Act of Legislature of
the State of New York 1862

 2025 American Bureau of Shipping. All rights reserved.

ABS Plaza
1701 City Plaza Drive
Spring, TX 77389 USA
Notices and General Information

CONTENTS
Introduction........................................................................................................................ 1
TABLE 1 Applicable Editions of Parts Comprising January 2025
Offshore Rules .......................................................................... 2
TABLE 2 Division and Numbering of Rules ............................................. 3
TABLE 3 Mapping of Sections of the 2024 Rules and Guides vs.
2025 Offshore Rules ................................................................. 4

ABS RULES FOR BUILDING AND CLASSING OFFSHORE UNITS . 2025 iii
Notices and General Information

Introduction
1. The ABS Rules for Building and Classing Offshore Units (Offshore Rules), are introduced in
January 2025 to:
• Enable verification of new technologies using a goal-based standards approach
• Reduce duplication of requirements and provide a set of Rules and Guides that are easier to
navigate based on the unit’s hull type and primary function by codifying (detailing) generic
mandatory classification requirements in Parts 3 through 8
• Differentiate mandatory requirements from those associated with optional notations
Building on the ABS Rules for Building Classing Mobile Offshore Units, this Rule set combines
and supersedes the following Rules and Guides:
• Rules for Building and Classing Mobile Offshore Units (MOU Rules)
• Rules for Building and Classing Floating Production Installations (FPI Rules)
• Rules for Building and Classing Offshore Installations (Offshore Installation Rules)
• Rules for Building and Classing Facilities on Offshore Installations (Facilities Rules)
(mandatory requirements only)
• Guide for Building and Classing Drillships (Drillship Guide)
The optional requirements in the Facilities Rules are now contained in the Guide for Hydrocarbon
Production Facilities on Offshore Units (Facilities Guide).
Part 9 is a new Part that covers requirements for optional notations that were previously offered in
individual Rule sets prior to the consolidation of the Offshore Rules. Most of the notations in this
Part are associated with the overall service function of the offshore unit.
2. The 2025 edition of the Rules for Building and Classing Offshore Units consists of the Parts as
shown in Table 1. Reference is made in these Rules to the following generic Rules:
a) Rules for Conditions of Classification – Offshore Units (Part 1B) includes consolidated
requirements for “Classification” applicable to all types of offshore units, pipelines,
risers, and other offshore structures, as specified in the Foreword to Part 1B.
b) Rules for Alternative Arrangements, Novel Concepts and New Technologies (Part 1D)
introduces a procedure for acceptance of alternative arrangements, novel concepts, and
new technologies based on Goals and Functional Requirements, including a consolidated
list of Tier 1 Goals.
c) Rules for Materials and Welding (Part 2) contains materials requirements common to
ABS-classed vessels, other marine structures and their associated machinery, including
steel, aluminum, and FRP materials.
3. The numbering system applied in the Rules is shown in Table 2.
4. A mapping of the sections of the current Rules and Guides vs. the new Offshore Rules is listed in
Table 3.

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Notices and General Information

TABLE 1
Applicable Editions of Parts Comprising January 2025 Offshore Rules
Notices and General Information January 2025
Part 1B: Rules for Conditions of Classification – Offshore Units January 2025
Part 1D: Rules for Alternative Arrangements, Novel Concepts and New January 2024
Technologies
Part 2: Rules for Materials and Welding January 2025
Part 3A: Hull Structure – Mobile Offshore Units January 2025
Part 3B: Hull Structure – Site-Specific Ship-Type Floating Installations January 2025
Part 3C: Hull Structure – Other Site-Specific Floating Installations January 2025
Part 3D: Hull Structure – Fixed Offshore Installations January 2025
Part 4: Machinery and Systems January 2025
Part 5: Fire and Safety – Measures and Features January 2025
Part 6: Equipment and Machinery Certification January 2025
Part 7A: Surveys – Mobile Offshore Units January 2025
Part 7B: Surveys – Site-Specific Floating Installations January 2025
Part 7C: Surveys – Fixed Offshore Installations January 2025
Part 8: Unit Functions January 2025
Chapter 1 Introduction
Chapter 2 Drilling Units
Chapter 3 Accommodation Units
Chapter 4 Crane Units
Chapter 5 Construction and Maintenance Units
Chapter 6 Drilling Tenders
Chapter 7 Pipe and Cable Laying Units
Chapter 8 Wind Turbine Installation, Maintenance,
and Repair Units
Chapter 9 Well Intervention
Chapter 10 Well Stimulation Units
Chapter 11 Units Fitted with Well Test Facilities
Chapter 12 Hydrocarbon Production, Storage, and
Offloading Units
Chapter 13 Offshore Substations and Electrical
Service
Chapter 14 Liquefied Gas Terminals
Chapter 15 Mining
Chapter 16 Power Services
Chapter 17 Spaceports
Appendix 1 Stability Criteria for Counter-Ballasted
Crane Units

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Notices and General Information

Part 9: Requirements for Optional Notations January 2025

Chapter 1 Introduction
Chapter 2 Drilling Systems
Chapter 3 Hydrocarbon Production and Process
Systems
Chapter 4 Import and Export Systems
Chapter 5 Gas Processing, Gas Liquefaction,
Transfer, and Regasification Systems
Chapter 6 Power Plant
Chapter 7 Offshore Substations
Chapter 8 Subsea Mining
Chapter 9 Brazilian Regulatory Compliance
Chapter 10 Modules on Deck
Chapter 11 Service Life Enhancement

TABLE 2
Division and Numbering of Rules
Division Number
Part Part 1
Chapter Part 1, Chapter 1
Section Section 1-1-1
Subsection (see Note 1) 1-1-1/1
Paragraph (see Note 1) 1-1-1/1.1
Subparagraph 1-1-1/1.1.1
Item 1-1-1/1.1.1(a)
Subitem 1-1-1/1.1.1(a)i)
Appendix Appendix 1-1-A1 or Appendix 1-A1-1
Note:
1 An odd number (1, 3, 5, etc.) numbering system is used for the Rules. The purpose is to permit future insertions of
even-numbered paragraphs (2, 4, 6, etc.) of text and to avoid the necessity of having to renumber the existing text and
associated cross-references, as applicable, within the Rules and associated process instructions, check sheets, etc.

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Notices and General Information

TABLE 3
Mapping of Sections of the 2024 Rules and Guides vs. 2025 Offshore Rules
2024 2024 Offshore Rules or
Title
Rule or Guide Section Facilities Guide Section
Rules for Building and Classing Mobile Offshore Units
MOU Rules 3-1-1 Definitions 3A-1-1
MOU Rules 3-1-2 Plans and Design Data to be Submitted 3A-1-2
MOU Rules 3-1-3 Environmental Loadings 3A-1-3
MOU Rules 3-1-4 Material Selection 3A-1-4
MOU Rules 3-1-A1 Shallow Water Wave Theory 3A-1-A1
MOU Rules 3-1-A2 Wave Theory for Deep Water 3A-1-A2
MOU Rules 3-2-1 Structural Analysis 3A-2-1
MOU Rules 3-2-2 Common Structures 3A-2-2
MOU Rules 3-2-3 Self-Elevating Units 3A-2-3
MOU Rules 3-2-4 Column-Stabilized Units 3A-2-4
MOU Rules 3-2-5 Surface-Type Units 3A-2-5
MOU Rules 3-2-6 Welding, Forming and Weld Design - Weld Design 3A-2-6
MOU Rules 3-2-A1 Strengthening of Mobile Offshore Units for Navigation in 3A-2-A1
Ice
MOU Rules 3-2-A2 Response Analysis - Selecting Design Waves for Structural 3A-2-A2
Analysis of Column-Stabilized Units (Twin-Hull Semi-
Submersible)
MOU Rules 3-2-A3 Guide for the Allowable Stresses for Localized Highly- 3A-2-A3
Stressed Areas
MOU Rules 3-3-1 General 3A-3-1
MOU Rules 3-3-2 Stability and Watertight/Weathertight Integrity 3A-3-2
MOU Rules 3-3-A1 Application of Dynamic Response Based Intact Stability 3A-3-A1
Criteria for Column-Stabilized Mobile Offshore Units
MOU Rules 3-3-A1a Sample Calculations 3A-3-A2
MOU Rules 3-3-A1b Direct Analysis of Dynamic Motion Responses 3A-3-A3
MOU Rules 3-3-A1c Environmental Conditions and Representations 3A-3-A4
MOU Rules 3-3-A2 Computer Software for Onboard Stability Calculations 3A-3-A5
MOU Rules 3-4-1 Mooring Systems and Equipment 3A-4-1
MOU Rules 4-1-1 General 4-1-1
MOU Rules 4-1-2 Machinery and Equipment 4-1-2
MOU Rules 4-2-1 General 4-2-1
MOU Rules 4-2-2 Pumps, Pipes, Valves, and Fittings 4-2-2
MOU Rules 4-2-3 Tank Vents, Overflows and Sounding 4-2-3
MOU Rules 4-2-4 Bilge and Ballast Systems and Tanks 4-2-4
MOU Rules 4-2-5 Fuel Oil Systems and Tanks 4-2-5
MOU Rules 4-2-6 Other Piping Systems and Tanks 4-2-6
MOU Rules 4-3-1 General 4-3-1
MOU Rules 4-3-2 Electrical Systems 4-3-2
MOU Rules 4-3-3 Onboard Installation 4-3-3
MOU Rules 4-3-4 Machinery and Equipment 4-3-4
MOU Rules 4-3-5 Specialized Installations 4-3-5
MOU Rules 4-3-6 Hazardous Areas 4-3-6
MOU Rules 5-1-1 General 5-1-1
MOU Rules 5-2-1 General 5-2-1
MOU Rules 5-2-2 Fixed Fire Fighting Systems 5-2-2
MOU Rules 5-2-3 Additional Fixed Fire Fighting Systems 5-2-3
MOU Rules 5-2-4 Portable Fire Fighting Systems 5-2-4
MOU Rules 5-2-5 Fire and Gas Detection 5-2-5
MOU Rules 5-3-1 General 5-3-1
MOU Rules 5-3-A1 Fiber Reinforced Plastic (FRP) Gratings 5-3-A1
MOU Rules 5-3-A2 Fiber Reinforced Plastic (FRP) Guard Railings 5-3-A2
MOU Rules 6-1-1 General 6-1-1

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2024 2024 Offshore Rules or

Title
Rule or Guide Section Facilities Guide Section
MOU Rules 6-1-2 Hull Structure and Outfitting 6-1-2
MOU Rules 6-1-3 Prime Movers 6-1-3
MOU Rules 6-1-4 Propulsion and Maneuvering Systems 6-1-4
MOU Rules 6-1-5 Boilers, Pressure Vessels and Fired Equipment 6-1-5
MOU Rules 6-1-6 Piping Systems 6-1-6
MOU Rules 6-1-7 Electrical Systems and Control Equipment. 6-1-7
MOU Rules 6-1-8 Fire and Safety - Equipment and Systems 6-1-8
MOU Rules 6-1-9 Jacking and Associated Systems 6-1-9
MOU Rules 6-1-10 Mooring Systems and Equipment 6-1-10
MOU Rules 7-1-1 General 7A-1-1
MOU Rules 7-1-2 Surveys at Builder’s Yard - Hull Structure and Outfitting 7A-1-2
MOU Rules 7-1-3 Surveys at Builder's Yard - Machinery, Piping, Pressure 7A-1-3
Vessels, and Outfitting
MOU Rules 7-1-4 Surveys at Builder's Yard - Mechanical and Piping Systems 7A-1-4
MOU Rules 7-1-5 Surveys at Builder's Yard - Electrical Cables and 7A-1-5
Equipment
MOU Rules 7-1-6 Surveys at Builder's Yard - Electrical Systems 7A-1-6
MOU Rules 7-1-7 Surveys at Builder’s Yard - Hazardous Areas 7A-1-7
MOU Rules 7-1-8 Surveys at Builder’s Yard - Fire and Safety 7A-1-8
MOU Rules 7-1-9 Surveys at Builder's Yard - Sea Trials 7A-1-9
MOU Rules 7-1-A1 Mooring Systems and Equipment 6-1-10
MOU Rules 7-1-A2 Surveys of Computers for Stability Calculations 7A-1-A1
MOU Rules 7-2-1 Conditions for Surveys After Construction 7A-2-1
MOU Rules 7-2-2 Survey Intervals 7A-2-2
MOU Rules 7-2-3 Survey Pre-Planning 7A-2-3
MOU Rules 7-2-4 Annual Surveys 7A-2-4
MOU Rules 7-2-5 Special Periodical Surveys 7A-2-5
MOU Rules 7-2-6 Drydocking Surveys or Equivalent 7A-2-6
MOU Rules 7-2-7 Specific Survey on Self-Elevating Units After Ocean 7A-2-7
Transit Tow
MOU Rules 7-2-8 Tail Shaft Surveys 7A-2-8
MOU Rules 7-2-9 Boiler Surveys 7A-2-9
MOU Rules 7-2-10 Automatic and Remote-control Systems 7A-2-10
MOU Rules 7-2-11 Crew Habitability 7A-2-11
MOU Rules 7-2-12 Lifting Appliances 7A-2-12
MOU Rules 7-2-A1 Lay-up and Reactivation of Laid-up Mobile Offshore Units 7A-2-A1
MOU Rules 7-2-A2 Survey of Portable Modules 7A-2-A2
MOU Rules 7-2-A3 Modification of a Self-Elevating Unit to Become Site- 7A-2-A3
Specific Fixed Offshore Installation
MOU Rules 7-2-A4 Surveys Based on Preventative Maintenance Techniques 7A-2-A4
MOU Rules 7-2-A5 Specific Survey After Severe Weather Event 7A-2-A5
MOU Rules 7-3-1 Offshore Substation Systems 7B-4-3
MOU Rules 8-1-1 Mobile Offshore Units - General 8-1-1 & 3C-1-3/21
MOU Rules 8-2-1 Drilling Units - General 8-2-1
MOU Rules 8-3-1 Accommodation Units - General 8-3-1
MOU Rules 8-4-1 Crane Units - General 8-4-1
MOU Rules 8-5-1 Construction and Maintenance Units - General 8-5-1
MOU Rules 8-6-1 Drilling Tenders - General 8-6-1
MOU Rules 8-7-1 Pipe and Cable Laying Units - General 8-7-1
MOU Rules 8-8-1 Wind Turbine Installation, Maintenance, and Repair Units 8-8-1
General
MOU Rules 8-9-1 Well Intervention - General 8-9-1
MOU Rules 8-10-1 Well Stimulation Units - General 8-10-1
MOU Rules 8-11-1 Units Fitted with Well Test Facilities - General 8-11-1
MOU Rules 8-A1-1 Stability Criteria for Counter-Ballasted Crane Units 8-A1-1

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Notices and General Information

2024 2024 Offshore Rules or

Title
Rule or Guide Section Facilities Guide Section
Rules for Building and Classing Floating Production Installations
FPI Rules 1-1-1 Classification 1B-3-1
FPI Rules 1-1-2 System Classification, Symbols and Notations 1B-3-2
9-9-1
FPI Rules 1-1-3 Rules and Criteria 1B-1-4
FPI Rules 1-1-4 Submission of Plans, Data and Calculations 3B-1-2
FPI Rules 3-1-1 Basic Configurations 1B-3-2/3.7
FPI Rules 3-1-2 Installation 3B-1-1/3
3C-1-1/2
FPI Rules 3-1-3 Production Facilities Deleted
FPI Rules 3-1-4 Position Mooring System 3B-1-1/5
FPI Rules 3-1-5 Subsea System 9-4-1/3
FPI Rules 3-2-1 General Design Basis 3B-1-2/1
FPI Rules 3-2-2 Design Documentation 3B-1-2/3
FPI Rules 3-2-3 Design Conditions 3B-1-2/5
FPI Rules 3-2-4 Environmental Conditions 3B-1-2/7
FPI Rules 3-3-1 All Installations 3B-1-3
FPI Rules 3-3-A1 Offshore Hull Construction Monitoring Program 3B-1-A1
FPI Rules 3-4-1 Installation, Hookup, and Commissioning - General 3B-1-4
9-4-4
FPI Rules 3-4-2 Hook-up Procedures Submittal 3B-1-4/5
FPI Rules 3-4-3 Start-up and Commissioning Procedures Submittal 3B-1-4/7
FPI Rules 3-4-4 Surveys During Installation, Hook-up and Commissioning 7B-2-1/2
FPI Rules 3-A1-1 Abbreviations Deleted
FPI Rules 3-A1-2 References 1B-1-A1
FPI Rules 4-1-1 General 8-12-1
FPI Rules 4-1-2 Scope Deleted
FPI Rules 4-1-3 Installations 3C-1-1/3
FPI Rules 4-1-4 Subsea Equipment Facilities Guide 3-3/21.5
FPI Rules 4-1-5 Other Codes and Standards Deleted
FPI Rules 4-1-6 Non-Standard Equipment Facilities Guide 4-2/7.25
FPI Rules 4-1-7 Design and Construction Facilities Guide 3-3/1.5
FPI Rules 4-1-8 Process System Facilities Guide Chapter 3
FPI Rules 4-1-9 Hazardous Area Classification Facilities Guide 3-6/15
8-12-3/3
FPI Rules 4-1-10 Fire Protection Facilities Guide 3-8
FPI Rules 4-1-11 Fabrication and Testing Facilities Guide 1-6/Table 1
Facilities Guide 5-1/Table 1
FPI Rules 4-2-1 General 9-4-1/5
FPI Rules 4-2-2 Submission of Plans and Design Data 9-4-2
FPI Rules 4-2-3 Environmental Considerations Deleted
FPI Rules 4-2-4 System Design and Analysis 9-4-3
FPI Rules 4-2-5 Materials Deleted
FPI Rules 5A-1-1 General 3B-2-1
FPI Rules 5A-1-2 Longitudinal Strength 3B-2-2
FPI Rules 5A-1-3 Structural Design and Analysis of the Hull 3B-2-3
FPI Rules 5A-1-4 Design and Analysis of Other Major Hull Structural 3B-2-4
Features
FPI Rules 5A-1-5 Modules on Deck 9-10-1
FPI Rules 5A-1-6 Other Systems Deleted
FPI Rules 5A-1-7 Service Life Enhancement Notation 9-11-1
FPI Rules 5A-2-1 General 3B-3-1
7B-1-2/5
FPI Rules 5A-2-2 Steel Renewal Assessment 3B-3-2
FPI Rules 5A-2-3 Fatigue Consideration (Remaining Fatigue Life) 3B-3-3
FPI Rules 5A-2-A1 Buckling Strength of Longitudinal Members Applied to 3B-3-A1
Reassessed Scantling Determination (See 5A-2-2/Figure 1)

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2024 2024 Offshore Rules or

Title
Rule or Guide Section Facilities Guide Section
FPI Rules 5A-3-1 General 3B-4-1
FPI Rules 5A-3-2 Loads 3B-4-2
FPI Rules 5A-3-3 Initial Scantling Evaluation 3B-4-3
FPI Rules 5A-3-4 Total Strength Assessment 3B-4-4
FPI Rules 5A-3-5 Hull Structure Beyond 0.4L Amidships 3B-4-5
FPI Rules 5A-3-6 Application to Single Hull Ship-Type Installations 3B-4-6
FPI Rules 5A-3-A1 Determination of Environmental Severity Factors 3B-4-A1
FPI Rules 5A-3-A2 Fatigue Strength Assessment of Ship-Type Installations 3B-4-A2
FPI Rules 5A-3-A3 Hull Girder Ultimate Strength Assessment 3B-4-A3
FPI Rules 5A-3-A4 Finite Element Analysis for Ship-Type Installations 3B-4-A4
FPI Rules 5A-3-A5 Design and Assessment of Large Bilge Keel Structures 3B-4-A5
FPI Rules 5A-4-1 Introduction 3B-5-1
FPI Rules 5A-4-2 Hull Structure 3B-5-2
FPI Rules 5A-4-3 Cargo Oil and Associated Systems Deleted
FPI Rules 5A-4-A1 Hull Girder Shear Strength for Ship-Type Installations 3B-5-A1
FPI Rules 5B-1-1 General Requirements 3C-2-1
FPI Rules 5B-1-2 Structures 3C-2-2
FPI Rules 5B-1-3 Stability 3C-2-3
FPI Rules 5B-1-4 Machinery and Systems Part 4
FPI Rules 5B-2-1 General Requirements 3C-3-1
FPI Rules 5B-2-2 Stability 3C-3-2
FPI Rules 5B-2-3 Hull and Primary Structures 3C-3-3
FPI Rules 5B-2-4 Other Structures 3C-3-4
FPI Rules 5B-2-5 Materials and Welding 3C-3-5
FPI Rules 5B-2-6 Machinery and Systems Part 4
FPI Rules 5B-3-1 General Requirements 3C-4-1
FPI Rules 5B-3-2 Stability 3C-4-2
FPI Rules 5B-3-3 Hull and Primary Structures 3C-4-3
FPI Rules 5B-3-4 Other Structures 3C-4-4
FPI Rules 5B-3-5 Materials and Welding 3C-4-5
FPI Rules 5B-3-6 Machinery and Systems Part 4
FPI Rules 5B-A1-1 Wave Impact Criteria 3C-A1-1
FPI Rules 6-1-1 Mooring System 3B-7-1/3
FPI Rules 6-1-2 Anchor Holding Power 3B-7-2
FPI Rules 7-1-1/1 General 7B-2-1/2
FPI Rules 7-1-1/3 Surveys During Construction or Modification 7B-1-2
FPI Rules 7-1-1/5 Mooring System Construction and Certification 7B-1-3
FPI Rules 7-1-2 Surveys During Hook-up 7B-2-2
FPI Rules 7-1-3 Surveys of the Mooring System 7B-2-3
FPI Rules 7-1-4 Surveys of the Import/Export System 7B-2-4
FPI Rules 7-1-5 Surveys of the Disconnectable System 7B-2-5
FPI Rules 7-1-6 Surveys During Commissioning 7B-2-6
FPI Rules 7-2-1 Conditions for Surveys After Construction 7B-3-1
FPI Rules 7-2-2 Survey Intervals 7B-3-2
FPI Rules 7-2-3 Survey Pre-Planning and In-Service Inspection Program 7B-3-3
(ISIP)
FPI Rules 7-2-4 Annual Surveys 7B-3-4
FPI Rules 7-2-5 Intermediate Surveys 7B-3-5
FPI Rules 7-2-6 Special Periodical Surveys (SPS) 7B-3-6
FPI Rules 7-2-7 Drydocking Surveys or Equivalent 7B-3-7
FPI Rules 7-2-8 Tail Shaft Surveys 7B-3-8
FPI Rules 7-2-9 Boiler Surveys 7B-3-9
FPI Rules 7-2-10 Crew Habitability on Offshore Installations 7B-3-10
FPI Rules 7-2-11 Specific Survey After Severe Weather Event 7B-3-11
FPI Rules 7-A1-1 Guidance for the Class Notation, Storage Service 7B-4-1

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Notices and General Information

2024 2024 Offshore Rules or

Title
Rule or Guide Section Facilities Guide Section
Rules for Building and Classing Offshore Installations
Offshore Installations 1-1-1 Classification 1B-4-1
Rules
Offshore Installations 1-1-2 Classification Symbols and Notations 1B-4-2
Rules
Offshore Installations 1-1-3 Rules for Classification 1B-1-4
Rules
Offshore Installations 1-1-4 Plans and Design Data to be Submitted 3D-2-1/3
Rules 3D-2-1/5
Offshore Installations 2-1-1 Structural Steels 3D-1-3
Rules
Offshore Installations 2-1-2 Materials for Concrete Construction 3D-1-4
Rules
Offshore Installations 2-2-1 Welding 7C-1-2/7
Rules
Offshore Installations 3-1-1 Definitions and Design Documentation 3D-2-1
Rules
Offshore Installations 3-1-2 Environmental Conditions 3D-2-2
Rules
Offshore Installations 3-1-3 Material Selection 3D-2-3
Rules
Offshore Installations 3-2-1 Loads 3D-2-4
Rules
Offshore Installations 3-2-2 General Design Requirements 3D-2-5
Rules
Offshore Installations 3-2-3 Steel Structures 3D-2-6
Rules
Offshore Installations 3-2-4 Concrete Structures 3D-2-7
Rules
Offshore Installations 3-2-5 Foundations 3D-2-8
Rules
Offshore Installations 3-2-6 Marine Operations 3D-2-9
Rules
Offshore Installations 3-2-7 Weld Design 3D-2-10
Rules
Offshore Installations 4-1-1 General 3D-4-1
Rules
Offshore Installations 4-1-2 Requirements for Extension of Use 3D-4-2
Rules
Offshore Installations 4-2-1 Requirements for Reuse 3D-4-3
Rules
Offshore Installations 5-1-1 General 7C-1-1
Rules
Offshore Installations 5-1-2 Steel Structures 7C-1-2
Rules
Offshore Installations 5-1-3 Concrete Structures 7C-1-3
Rules
Offshore Installations 5-2-1 Conditions for Surveys After Construction 7C-2-1
Rules
Offshore Installations 5-2-2 Annual Surveys 7C-2-2
Rules
Offshore Installations 5-2-3 Special Surveys 7C-2-3
Rules
Offshore Installations 5-2-4 Structural Deterioration 7C-2-4
Rules
Offshore Installations 5-2-5 Maintenance of Marine Growth 7C-2-5
Rules
Offshore Installations 5-2-6 Statutory Certification 7C-2-6
Rules

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2024 2024 Offshore Rules or

Title
Rule or Guide Section Facilities Guide Section
Offshore Installations 5-2-7 Crew Habitability on Offshore Installations 7C-2-7
Rules
Guide for Building and Classing Drillships
Drillship Guide Section 1 Introduction 3A-5-1
Drillship Guide Section 2 Design Considerations 3A-5-2
Drillship Guide Section 3 Loads 3A-5-3
Drillship Guide Section 4 Initial Scantling Evaluation 3A-5-4
Drillship Guide Section 5 Total Strength Assessment 3A-5-5
Drillship Guide Section 6 Hull Structure Beyond 0.4L Amidships 3A-5-6
Drillship Guide Section 7 Topside and Hull Interface Structures 3A-5-7
Drillship Guide Appendix 1 Determination of Environmental Severity Factors 3A-5-A1
Drillship Guide Appendix 2 Fatigue Strength Assessment of Drillships 3A-5-A2
Drillship Guide Appendix 3 Hull Girder Ultimate Strength 3A-5-A3
Drillship Guide Appendix 4 Finite Element Analysis for Drillships 3A-5-A4
Drillship Guide Appendix 5 Offshore Hull Construction Monitoring Program 3A-1-A3
Drillship Guide Appendix 6 Material Selection 3A-2-5/3
Rules for Building and Classing Facilities on Offshore Installations
Facilities Rules 1-1 Classification Facilities Guide 1-1
Facilities Rules 1-2 Application, System Classification Boundaries, Facilities Guide 1-2
Symbols, and Notations
Facilities Rules 1-3 Rules for Classification Facilities Guide 1-3
Facilities Rules 1-4 Recognition of Risk Based Techniques to Justify Facilities Guide 1-4
Alternatives
Facilities Rules 1-5 Submission of Plans, Data, and Calculations Facilities Guide 1-5
Facilities Rules 1-6 Certification of Equipment Facilities Guide 1-6
Facilities Rules 2-1 Definitions Facilities Guide 2-1
Facilities Rules 2-2 References Facilities Guide 2-2
Facilities Rules 2-3 Acronyms and Abbreviations Facilities Guide 2-3
Facilities Rules 3-1 General Facilities Guide 3-1
Facilities Rules 3-2 Design Plans and Data Facilities Guide 3-2
Facilities Rules 3-3 Hydrocarbon Production and Process Systems Facilities Guide 3-3
Facilities Rules 3-3/5 Facility Layout 8-12-2
Facilities Rules 3-3/13.3 Safety and Process Shutdown Systems 8-12-5
3-7/11, 13
Facilities Rules 3-4 Process Support Systems Facilities Guide 3-4
Facilities Rules 3-5 Marine Support Systems 8-12-6
3-2/11
Facilities Rules 3-6 Electrical Systems Facilities Guide 3-6
Facilities Rules 3-6/5.9 Electrical Systems 8-12-3
3-6/15
Facilities Rules 3-7 Instrumentation & Control Systems Facilities Guide 3-7
Facilities Rules 3-8 Fire Protection and Personnel Safety 8-12-4
4-8
Facilities Rules 4-1 General Facilities Guide 4-1
Facilities Rules 4-2 Design Plans and Data Facilities Guide 4-2
Facilities Rules 4-3 Hydrocarbon Production and Process Systems Facilities Guide 4-3
Facilities Rules 4-4 Process and Platform Support Systems Facilities Guide 4-4
Facilities Rules 4-5 INTENTIONALLY LEFT BLANK Facilities Guide 4-5
Facilities Rules 4-6 Electrical Systems Facilities Guide 4-6
Facilities Rules 4-7 Instrumentation and Control Systems Facilities Guide 4-7
Facilities Rules 4-8 Fire Protection and Personnel Safety Facilities Guide 4-8
Facilities Rules 5-1 Surveys During Construction and Commissioning Facilities Guide 5-1
Facilities Rules 5-2 Surveys for Maintenance of Class Facilities Guide 5-2
Facilities Rules 5-3 Risk Based Surveys for Maintenance of Class Facilities Guide 5-3
Facilities Rules A1-1 Scope and Conditions of Certification Facilities Guide A1-1
Facilities Rules A1-2 Design Facilities Guide A1-2
Facilities Rules A1-3 Installation Facilities Guide A1-3

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Notices and General Information

2024 2024 Offshore Rules or

Title
Rule or Guide Section Facilities Guide Section
Facilities Rules A1-4 Manufacturing Facilities Guide A1-4
Facilities Rules A1-5 Pipe Bonding Procedure Qualification Facilities Guide A1-5
Facilities Rules A1-6 Tests by the Manufacturer - Fire Endurance Testing of FRP 4-2-2/7.13
Piping in Dry Condition (For Level 1 and Level 2)
Facilities Rules A1-7 Tests by the Manufacturer - Fire Endurance Testing of 4-2-2/7.15
Water-filled FRP Piping (For Level 3)
Facilities Rules A1-8 Tests by the Manufacturer - Wet/Dry Fire Endurance 4-2-2/7.16
Testing of FRP Piping Used in Deluge System (For Level 3
Modified Test - Level 3 WD) (Adopted from USCG PFM
1-98)
Facilities Rules A1-9 Tests by the Manufacturer - Flame Spread 4-2-2/7.17
Facilities Rules A1-10 Testing Onboard Facilities Guide A1-6
Facilities Rules A1-11 References Facilities Guide A1-Annex 1
Facilities Rules A2-1 Fire Tests for Non-metallic Hoses Facilities Guide A2-1
Facilities Rules A3-1 Fiber Reinforced Plastic (FRP) Gratings 5-3-A1
Facilities Rules A3-2 Fiber Reinforced Plastic (FRP) Guard Railings 5-3-A2
Facilities Rules A4-1 References, Codes and Standards Facilities Guide A3-1
Facilities Rules A5-1 Systems Requirements for Floating Installations Deleted

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