Our Services

Comprehensive underwater welding and subsea solutions designed to meet the most demanding marine challenges with precision and safety.

COMPREHENSIVE SOLUTIONS

Expert Underwater Services

Prime Underwater Welding provides a comprehensive range of services to support marine and offshore industries. Our expertise ensures that your underwater structures remain safe, functional, and durable.

WET WELDING

Fast & Cost-Effective Solutions

Wet welding is performed directly in water using specialized waterproof electrodes. This cost-effective and versatile method is ideal for quick repairs and projects where time and budget are critical. Our team uses advanced techniques to create strong welds despite challenges like water pressure, poor visibility, and rapid cooling.

Typical Applications:

  • Temporary repairs and quick fixes
  • Ship hull maintenance and patches
  • Pipeline repairs and patches
  • Sacrificial anode installation

Welding Processes & Methods:

SMAW (Stick Welding)
FCAW (Flux-Cored)
Waterproof Electrodes
Advanced Mitigation

Key Advantages: Fast deployment, cost-effective, adaptable to various underwater conditions, and versatile for emergency repairs.

Wet welding underwater
Quick
Deployment
Hyperbaric welding habitat
Superior
Weld Quality
DRY WELDING (HYPERBARIC)

Precision High-Quality Welds

Dry welding, or hyperbaric welding, is performed inside a sealed, pressurized chamber filled with a gas mixture to create a dry environment. This method delivers superior weld quality, making it ideal for critical applications requiring high strength and precision.

Typical Applications:

  • Permanent repairs on offshore oil platforms
  • Critical pipeline repairs and tie-ins
  • Structural components of ships and bridges
  • High-integrity subsea connections

Advanced Welding Methods:

GTAW/TIG Welding
SMAW Stick Welding
Pressurized Habitat
Gas Mixture Control

Key Advantages: Superior weld quality, reduced risk of defects, compatibility with advanced techniques, and meets critical structural requirements.

INSPECTION & NDT

Ensuring Weld Integrity

Ensuring weld integrity is critical in underwater environments. We provide comprehensive inspection services to verify weld quality and structural soundness. Our procedures comply with the American Welding Society (AWS) D3.6M:2017 standards, ensuring welds meet Class A, B, or O requirements based on project needs.

Inspection Services:

  • Visual inspections and documentation
  • Magnetic particle testing (MPT)
  • Non-destructive testing (NDT)
  • AWS CWI certified inspections

Quality Standards & Compliance:

AWS D3.6M:2017 Compliance
Class A, B, O Requirements
AWS Certified Welding Inspectors
Detailed Quality Reports
Underwater inspection
AWS
Certified
Marine construction
Full
Service
MARINE CONSTRUCTION

Complete Marine Solutions

From building new underwater structures to repairing existing ones, Hydro Coastal supports a wide range of marine construction projects with expertise across multiple sectors.

Ship Repair

  • • Hull repairs & reinforcement
  • • Propeller maintenance
  • • No dry-docking required

Offshore Oil & Gas

  • • Pipeline maintenance
  • • Riser and platform repairs
  • • Harsh environment work

Coastal Infrastructure

  • • Pier and dock repair
  • • Seawall reinforcement
  • • Bridge support maintenance

Salvage & Demolition

  • • Vessel salvage operations
  • • Underwater cutting
  • • Structure dismantling
CUSTOM SOLUTIONS

Tailored Engineering Excellence

Every underwater project is unique. Hydro Coastal offers customized welding procedures and welder performance qualifications, approved by classification societies like the American Bureau of Shipping (ABS). Our engineers and AWS Certified Welding Inspectors (CWIs) develop tailored solutions to match your project's specific materials and design requirements.

Custom Engineering Services:

  • Welding Procedure Specifications (WPS)
  • Welder performance qualifications
  • ABS classification society approval
  • Material-specific procedure development

Our Expertise:

AWS CWI Engineers
ABS Approvals
Custom WPS Development
Project-Specific Solutions
Custom engineering solutions
Custom
Solutions

Complete Service Portfolio

Wet Welding

Fast, cost-effective welding performed directly in water using specialized waterproof electrodes for quick repairs.

  • • Temporary repairs and quick fixes
  • • Ship hull maintenance and patches
  • • Pipeline repairs and patches
  • • Sacrificial anode installation
Learn More

Dry Welding (Hyperbaric)

Superior quality welding performed in sealed, pressurized chambers for critical permanent repairs.

  • • Permanent offshore platform repairs
  • • Critical pipeline repairs and tie-ins
  • • Ship and bridge structural components
  • • High-integrity subsea connections
Learn More

Inspection & NDT

Comprehensive non-destructive testing and inspection services compliant with AWS D3.6M:2017 standards.

  • • Visual inspections and documentation
  • • Magnetic particle testing (MPT)
  • • Non-destructive testing (NDT)
  • • AWS CWI certified inspections
  • • Class A, B, O requirement verification
Learn More

Ship Repair

Complete vessel maintenance and repair services without the need for dry-docking.

  • • Hull repairs and reinforcement
  • • Propeller maintenance
  • • Structural welding and patching
  • • Underwater hull cleaning
  • • No dry-docking required
Learn More

Offshore Oil & Gas

Specialized maintenance services for offshore energy infrastructure in harsh marine environments.

  • • Pipeline maintenance and repair
  • • Riser and platform repairs
  • • Subsea manifold maintenance
  • • Harsh environment operations
  • • Emergency response capabilities
Learn More

Coastal Infrastructure

Repair and reinforcement services for critical coastal and marine structures.

  • • Pier and dock repair
  • • Seawall reinforcement
  • • Bridge support maintenance
  • • Marine structure restoration
  • • Foundation stabilization
Learn More

Salvage & Demolition

Specialized cutting and welding services for salvage operations and structure dismantling.

  • • Vessel salvage operations
  • • Underwater cutting services
  • • Structure dismantling
  • • Debris removal and recovery
  • • Environmental compliance
Learn More

Custom Solutions

Tailored engineering solutions with custom WPS development and ABS-approved procedures.

  • • Welding Procedure Specifications (WPS)
  • • Welder performance qualifications
  • • ABS classification approvals
  • • Material-specific procedures
  • • AWS CWI engineering support
Learn More

Marine Construction & Repair

Complete marine construction services from ship repairs to offshore platforms and coastal infrastructure.

  • • Ship hull repairs and propeller maintenance
  • • Offshore oil & gas platform repairs
  • • Pier, dock, and bridge support maintenance
  • • Vessel salvage and structure dismantling
  • • No dry-docking required
Learn More

Need Our Expertise?

Contact our technical team to discuss your specific underwater welding requirements. We provide detailed assessments and customized solutions for every project.