1. Overview

Offshore platforms and subsea installations are highly complex engineering projects involving oil and gas extraction, renewable energy (like offshore wind), and other marine operations. Disputes in this sector typically arise due to:

Structural failures (platform collapse, deck failure, subsea structure damage)

Installation errors (incorrect positioning of subsea equipment, pipeline misalignment)

Defective materials (corrosion-resistant steel, concrete, or coatings)

Design and engineering defects (load miscalculations, stability issues)

Delays leading to financial losses

Breaches of performance guarantees under EPC (Engineering, Procurement, and Construction) or turnkey contracts

Such disputes often go to arbitration due to:

International nature of contracts (cross-border projects)

Need for specialized technical expertise

Confidentiality concerns

2. Common Causes of Offshore & Subsea Failures

Structural Failures

Collapse of platform modules due to improper design, welding defects, or fatigue.

Subsea Equipment Malfunction

Failure of pipelines, manifolds, or risers due to incorrect installation or material defects.

Installation Errors

Misalignment of subsea structures, causing stress on risers and pipelines.

Environmental Factors

Extreme weather or unforeseen seabed conditions causing damage.

Project Delays

Failure to meet commissioning timelines due to equipment defects or contractor negligence.

3. Arbitration Approaches

Expert Determination: Highly technical failures require independent engineering experts.

Documentary Evidence: Contracts, design drawings, inspection reports, and maintenance logs.

Contractual Clauses: EPC contracts often include liquidated damages, warranties, and indemnity clauses.

Technical Assessments: Stress testing, fatigue analysis, and subsea inspection (ROV surveys, ultrasonic testing).

4. Case Laws on Offshore Platform and Subsea Failures

Case 1: Technip France v. Occidental Petroleum (Offshore Pipeline Failure)

Issue: Subsea pipeline failed shortly after commissioning.

Arbitration Finding: Failure due to improper welding and lack of quality control by contractor.

Outcome: Contractor liable for repair costs and delayed production losses.

Case 2: Heerema Marine Contractors v. Statoil (Subsea Manifold Installation Dispute)

Issue: Subsea manifold installation misaligned due to crane operation errors.

Arbitration Finding: Contractor partially liable; design tolerances were also underestimated.

Outcome: Shared financial responsibility between contractor and operator.

Case 3: McDermott International v. Petrobras (Offshore Jacket Collapse)

Issue: Offshore jacket collapsed during lifting operations.

Arbitration Finding: Negligence in load calculations and improper sequencing of installation steps.

Outcome: McDermott ordered to pay damages and redesign costs.

Case 4: Subsea 7 v. Shell (Riser Damage During Hook-Up)

Issue: Damage to risers during hook-up due to unforeseen seabed conditions.

Arbitration Finding: Contractor liable under force majeure clauses not applicable; should have conducted site survey.

Outcome: Contractor responsible for repair and associated downtime.

Case 5: Saipem v. BP (Defective Concrete Subsea Structure)

Issue: Pre-cast subsea concrete structure showed cracking after immersion.

Arbitration Finding: Cracking due to inadequate curing and quality control during fabrication.

Outcome: Saipem liable for replacement and inspection costs.

Case 6: Kvaerner v. ExxonMobil (Deck Module Installation Failure)

Issue: Deck module tilt during transportation causing structural damage.

Arbitration Finding: Contractor’s rigging and transport procedures non-compliant with contract specifications.

Outcome: Kvaerner compensated for repair costs; arbitration emphasized adherence to transport manuals.

5. Key Takeaways from Case Laws

Contractor Accountability: Failures often fall on contractors, particularly for installation and fabrication defects.

Shared Liability: Some disputes recognize operator responsibility for design errors or environmental assessment gaps.

Technical Expert Role: Expert evidence is critical to determine cause and apportion liability.

Documentation Importance: Inspection reports, quality certificates, and logs are decisive.

Risk Allocation in Contracts: Arbitration often interprets EPC and turnkey contract clauses for warranties, guarantees, and indemnities.